Antioxidant Activity of Planar Catechin Conjugated with Trolox

Wakana Shimizu, Yoshimi Shoji, Kei Ohkubo, Hiromu Ito, Ikuo Nakanishi, Kiyoshi Fukuhara

Antioxidants　2024/08/23　Research paper (scientific journal)

Construction of a screening system for lipid-derived radical inhibitors and validation of hit compounds to target retinal and cerebrovascular diseases

Ryota Mori, Masami Abe, Yuma Saimoto, Saki Shinto, Sara Jodai, Manami Tomomatsu, Kaho Tazoe, Minato Ishida, Masataka Enoki, Nao Kato, Tomohiro Yamashita, Yuki Itabashi, Ikuo Nakanishi, Kei Ohkubo, Sachiko Kaidzu, Masaki Tanito, Yuta Matsuoka, Kazushi Morimoto, Ken-ichi Yamada

Redox Biology　p. 103186-103186　2024/05　Research paper (scientific journal)

Scandium Ion-Promoted Electron-Transfer Disproportionation of 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-Oxide (PTIO•) in Acetonitrile and Its Regeneration Induced by Water

Yoshimi Shoji, Yuri Terashima, Kei Ohkubo, Hiromu Ito, Kouichi Maruyama, Shunichi Fukuzumi, Ikuo Nakanishi

International Journal of Molecular Sciences　Vol. 25　No. 8　p. 4417-4417　2024/04/17　Research paper (scientific journal)

9-(4-Halo-2,6-xylyl)-10-methylacridinium Ion as an Effective Photoredox Catalyst for Oxygenation and Trifluoromethylation of Toluene Derivatives

Kei Ohkubo, Soichiro Matsumoto, Haruyasu Asahara, Shunichi Fukuzumi

ACS Catalysis　2024/02/16　Research paper (scientific journal)

Mitochondria Play Essential Roles in Intracellular Protection against Oxidative Stress—Which Molecules among the ROS Generated in the Mitochondria Can Escape the Mitochondria and Contribute to Signal Activation in Cytosol?

Daisuke Masuda, Ikuo Nakanishi, Kei Ohkubo, Hiromu Ito, Ken-ichiro Matsumoto, Hiroshi Ichikawa, Moragot Chatatikun, Wiyada Kwanhian Klangbud, Manas Kotepui, Motoki Imai, Fumitaka Kawakami, Makoto Kubo, Hirofumi Matsui, Jitbanjong Tangpong, Takafumi Ichikawa, Toshihiko Ozawa, Hsiu-Chuan Yen, Daret K. St Clair, Hiroko P. Indo, Hideyuki J. Majima

Biomolecules　Vol. 14　No. 1　p. 128-128　2024/01/19　Research paper (scientific journal)

Supramolecular nanosheet formation-induced photosensitisation mechanism change of Rose Bengal dye in aqueous media

Asuka Bunno, Hajime Shigemitsu, Aya Yoshikawa, Yasuko Osakada, Mamoru Fujitsuka, Fumitaka Ishiwari, Akinori Saeki, Kei Ohkubo, Tadashi Mori, Toshiyuki Kida

Chemical Communications　Vol. 60　No. 7　p. 889-892　2024　Research paper (scientific journal)

A BODIPY-picolinium-cation conjugate as a blue-light-responsive caged group

Naoya Ieda, Akira Nakamura, Natsumi Tomita, Kei Ohkubo, Ryo Izumi, Yuji Hotta, Mitsuyasu Kawaguchi, Kazunori Kimura, Hidehiko Nakagawa

RSC Advances　Vol. 13　p. 26375-26379　2023/09　Research paper (scientific journal)

Water-Induced Regeneration of a 2,2-Diphenyl-1-picrylhydrazyl Radical after Its Scandium Ion-Promoted Electron-Transfer Disproportionation in an Aprotic Medium

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Hiromu Ito, Shunichi Fukuzumi

Molecules　Vol. 28　No. 13　p. 5002-5002　2023/06/26　Research paper (scientific journal)

2-Azafluorenone derivatives: Photocatalyst for oxygenation of toluene via electron transfer and hydrogen-atom transfer

Haruyasu Asahara, Yurie Horikawa, Kento Iwai, Nagatoshi Nishiwaki, Kei Ohkubo

Journal of Photochemistry and Photobiology　Vol. 15　2023/06　Research paper (scientific journal)

In vitro radical-scavenging mechanism of melatonin and its in vivo protective effect against radiation-induced lipid peroxidation

Kailash Manda, Kei Ohkubo, Yoshimi Shoji, Kabir Zoardar, Masato Kamibayashi, Toshihiko Ozawa, Kazunori Anzai, Ikuo Nakanishi

Redox Biochemistry and Chemistry　p. 100003-100003　2023/04　Research paper (scientific journal)

One-step antibacterial modification of polypropylene non-woven fabrics via oxidation using photo-activated chlorine dioxide radicals

Keita Yamamoto, Haruyasu Asahara, Kazuo Harada, Yuki Itabashi, Kei Ohkubo, Tsuyoshi Inoue

Journal of Materials Chemistry B　Vol. 11　No. 23　p. 5101-5107　2023　Research paper (scientific journal)

Chlorine-radical-mediated C–H oxygenation reaction under light irradiation

Yuki Itabashi, Haruyasu Asahara, Kei Ohkubo

Chemical Communications　Vol. 59　No. 49　p. 7506-7517　2023　Research paper (scientific journal)

Amphiphilic Rhodamine Nano-assembly as a Type I Supramolecular Photosensitizer for Photodynamic Therapy

Hajime Shigemitsu, Kazuhide Sato, Satomi Hagio, Youhei Tani, Tadashi Mori, Kei Ohkubo, Yasuko Osakada, Mamoru Fujitsuka, Toshiyuki Kida

ACS Applied Nano Materials　Vol. 5　No. 10　p. 14954-14960　2022/10/28　Research paper (scientific journal)

Pathological complete remission of relapsed tumor by <scp>photo‐activating</scp> antibody–mimetic drug conjugate treatment

Yudai Kaneko, Kenzo Yamatsugu, Takefumi Yamashita, Kazuki Takahashi, Toshiya Tanaka, Sho Aki, Toshifumi Tatsumi, Takeshi Kawamura, Mai Miura, Masazumi Ishii, Kei Ohkubo, Tsuyoshi Osawa, Tatsuhiko Kodama, Shumpei Ishikawa, Masanobu Tsukagoshi, Michael Chansler, Akira Sugiyama, Motomu Kanai, Hiroto Katoh

Cancer Science　Vol. 113　No. 12　p. 4350-4362　2022/09/19　Research paper (scientific journal)

Fluorescein-Based Type I Supramolecular Photosensitizer via Induction of Charge Separation by Self-Assembly

Hajime Shigemitsu, Kei Ohkubo, Kazuhide Sato, Asuka Bunno, Tadashi Mori, Yasuko Osakada, Mamoru Fujitsuka, Toshiyuki Kida

JACS Au　2022/06/27　Research paper (scientific journal)

9-Cyano-10-methoxycarbonylanthracene as a Visible Organic Photoredox Catalyst in the Two-Molecule Photoredox System

Yuka Tajimi, Yasuhiro Nachi, Ryoko Inada, Ryoga Hashimoto, Mugen Yamawaki, Kei Ohkubo, Toshio Morita, Yasuharu Yoshimi

The Journal of Organic Chemistry　2022/06/03　Research paper (scientific journal)

Antibody mimetic drug conjugate manufactured by high-yield Escherichia coli expression and non-covalent binding system

Kenzo Yamatsugu, Hiroto Katoh, Takefumi Yamashita, Kazuki Takahashi, Sho Aki, Toshifumi Tatsumi, Yudai Kaneko, Takeshi Kawamura, Mai Miura, Masazumi Ishii, Kei Ohkubo, Tsuyoshi Osawa, Tatsuhiko Kodama, Shumpei Ishikawa, Motomu Kanai, Akira Sugiyama

PROTEIN EXPRESSION AND PURIFICATION　Vol. 192　2022/04　Research paper (scientific journal)

改変ストレプトアビジン-イミノビオチン薬物送達システムを用いた近赤外治療法の開発

高橋 和希, 山次 健三, 加藤 洋人, 山下 雄史, 安藝 翔, 巽 俊文, 金子 雄大, 川村 猛, 三浦 麻衣, 石井 正純, 大久保 敬, 大澤 毅, 児玉 龍彦, 石川 俊平, 金井 求, 杉山 暁

日本薬学会年会要旨集　Vol. 142年会　p. 26T-pm01S　2022/03

Effect of Magnesium Ion on the Radical-Scavenging Rate of Pterostilbene in an Aprotic Medium: Mechanistic Insight into the Antioxidative Reaction of Pterostilbene

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Megumi Ueno, Kei Shimoda, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Hiroki Hamada

Antioxidants　Vol. 11　No. 2　p. 340-340　2022/02/09　Research paper (scientific journal)

pH Effect on the Scavenging Rates of Ascorbic Acid against Selected Radicals in Phosphate Buffer Solutions

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-ichiro Matsumoto, Shunichi Fukuzumi

Free Radical Biology and Medicine　Vol. 180　p. s64-s64　2022/02　Research paper (scientific journal)

Visible-light-induced phosgenation of amines by chloroform oxygenation using chlorine dioxide

Haruyasu Asahara, Nozomi Takao, Maiko Moriguchi, Tsuyoshi Inoue, Kei Ohkubo

Chemical Communications　Vol. 58　No. 42　p. 6176-6179　2022　Research paper (scientific journal)

Acridinium salts as photoredox organocatalysts for photomediated cationic RAFT and DT polymerizations of vinyl ethers

Marina Matsuda, Mineto Uchiyama, Yuki Itabashi, Kei Ohkubo, Masami Kamigaito

Polymer Chemistry　Vol. 13　No. 8　p. 1031-1039　2022　Research paper (scientific journal)

One-pot chlorocarboxylation of toluenes with chlorine dioxide under photoirradiation

Shohei Ohno, Haruyasu Asahara, Tsuyoshi Inoue, Kei Ohkubo

RSC Advances　Vol. 12　No. 48　p. 31412-31414　2022　Research paper (scientific journal)

Ascorbate-assisted nitric oxide release from photocontrollable nitrosonium ion releasers for potent ex vivo photovasodilation

Naoya Ieda, Yuka Yoshikawa, Natsumi Tomita, Kei Ohkubo, Yuji Hotta, Mitsuyasu Kawaguchi, Kazunori Kimura, Hidehiko Nakagawa

Chemical Communications　2022　Research paper (scientific journal)

Tunneling in the Hydrogen-Transfer Reaction from a Vitamin E Analog to an Inclusion Complex of 2,2-Diphenyl-1-picrylhydrazyl Radical with β-Cyclodextrin in an Aqueous Buffer Solution at Ambient Temperature

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Shunichi Fukuzumi

Antioxidants　Vol. 10　No. 12　p. 1966-1966　2021/12/08　Research paper (scientific journal)

A cyanine dye based supramolecular photosensitizer enabling visible-light-driven organic reaction in water.

Hajime Shigemitsu, Tomoe Tamemoto, Kei Ohkubo, Tadashi Mori, Yasuko Osakada, Mamoru Fujitsuka, Toshiyuki Kida

Chemical communications (Cambridge, England)　2021/10/08　Research paper (scientific journal)

Axially Substituted Silicon Phthalocyanine Payloads for Antibody-Drug Conjugates

Kazuki Takahashi, Akira Sugiyama, Kei Ohkubo, Toshifumi Tatsumi, Tatsuhiko Kodama, Kenzo Yamatsugu, Motomu Kanai

SYNLETT　Vol. 32　No. 11　p. 1098-1103　2021/07　Research paper (scientific journal)

Anionic Fluorinated Zn-porphyrin Combined with Cationic Endohedral Li-fullerene for Long-Lived Photoinduced Charge Separation with Low Energy Loss

Kazuhira Miwa, Shinobu Aoyagi, Takahiro Sasamori, Hiroshi Ueno, Hiroshi Okada, Kei Ohkubo

The Journal of Physical Chemistry B　Vol. 125　No. 3　p. 918-925　2021/01/28　Research paper (scientific journal)

Effects of reaction environments on radical-scavenging mechanisms of ascorbic acid

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Kiyoshi Fukuhara, Toshihiko Ozawa, Ken-ichiro Matsumoto, Shunichi Fukuzumi

Journal of Clinical Biochemistry and Nutrition　2021　Research paper (scientific journal)

Light-Driven C-H Oxygenation of Methane with Chlorine Dioxide

Kei Ohkubo

ECS Meeting Abstracts　Vol. {MA}2020-02　No. 61　p. 3144-3144　2020/11/23　Research paper (scientific journal)

Phenylene-bridged bis(benzimidazolium) (BBIm(2+)): a dicationic organic photoredox catalyst

Takuya Kodama, Maiko Kubo, Wataru Shinji, Kei Ohkubo, Mamoru Tobisu

CHEMICAL SCIENCE　Vol. 11　No. 44　p. 12109-12117　2020/11　Research paper (scientific journal)

A large kinetic isotope effect in the reaction of ascorbic acid with 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO˙) in aqueous buffer solutions.

Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-Ichiro Matsumoto, Shunichi Fukuzumi

Chemical communications (Cambridge, England)　Vol. 56　No. 77　p. 11505-11507　2020/09/29　Research paper (scientific journal)

Relationship between the radical-scavenging activity of selected flavonols and thermodynamic parameters calculated by density functional theory.

Ikuo Nakanishi, Kei Ohkubo, Yoshimi Shoji, Yuya Fujitaka, Kei Shimoda, Ken-Ichiro Matsumoto, Kiyoshi Fukuhara, Hiroki Hamada

Free radical research　Vol. 54　No. 7　p. 535-539　2020/07　Research paper (scientific journal)

Low switching voltage, high-stability organic phototransistor memory based on a photoactive dielectric and an electron trapping layer

Toan Thanh Dao, Heisuke Sakai, Kei Ohkubo, Shunichi Fukuzumi, Hideyuki Murata

ORGANIC ELECTRONICS　Vol. 77　2020/02　Research paper (scientific journal)

Two Different Multiple Photosynthetic Reaction Centers Using Either Zinc Porphyrinic Oligopeptide-Fulleropyrrolidine or Free-Base Porphyrinic Polypeptide-Li+@C(60)Supramolecular Complexes

Nathalie Solladie, Shunichi Fukuzumi, Kei Ohkubo, Francis D'Souza, Regis Rein, Kenji Saito, Vincent Troiani, Hongjin Qiu, Suresh Gadde, Tetsuya Hasegawa

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY　Vol. 9　No. 6　p. 061026-061026　2020/01　Research paper (scientific journal)

Kinetics and Mechanism of Intramolecular Electron Transfer in Ru(II)-Re(I) Supramolecular CO2-Reduction Photocatalysts: Effects of Bridging Ligands

Yasuomi Yamazaki, Kei Ohkubo, Daiki Saito, Taiki Yatsu, Yusuke Tamaki, Sei'ichi Tanaka, Kazuhide Koike, Ken Onda, Osamu Ishitani

INORGANIC CHEMISTRY　Vol. 58　No. 17　p. 11480-11492　2019/09　Research paper (scientific journal)

Cover Feature: Paddlewheel Complexes with Azulenes: Electronic Interaction between Metal Centers and Equatorial Ligands (ChemPlusChem 6/2019)

Takahiro Tsuchiya, Reiya Umemura, Mutsumi Kaminaga, Shunsuke Kushida, Kei Ohkubo, Shin‐Ichiro Noro, Yasuhiro Mazaki

ChemPlusChem　Vol. 84　No. 6　p. 555-555　2019/06/30　Research paper (scientific journal)

Paddlewheel Complexes with Azulenes: Electronic Interaction between Metal Centers and Equatorial Ligands

Takahiro Tsuchiya, Reiya Umemura, Mutsumi Kaminaga, Shunsuke Kushida, Kei Ohkubo, Shin-Ichiro Noro, Yasuhiro Mazaki

CHEMPLUSCHEM　Vol. 84　No. 6　p. 655-664　2019/06　Research paper (scientific journal)

A Diprotonated Porphyrin as an Electron Mediator in Photoinduced Electron Transfer in Hydrogen-Bonded Supramolecular Assemblies

Wataru Suzuki, Hiroaki Kotani, Tomoya Ishizuka, Masaki Kawano, Hayato Sakai, Taku Hasobe, Kei Ohkubo, Shunichi Fukuzumi, Takahiko Kojima

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 123　No. 18　p. 11529-11538　2019/05　Research paper (scientific journal)

Synthesis and radical-scavenging activity of C-methylated fisetin analogues

Kohei Imai, Ikuo Nakanishi, Kei Ohkubo, Akiko Ohno, Mirei Mizuno, Shunichi Fukuzumi, Ken ichiro Matsumoto, Kiyoshi Fukuhara

Bioorganic and Medicinal Chemistry　Vol. 27　No. 8　p. 1720-1727　2019/04　Research paper (scientific journal)

Unified Mechanism of Oxygen Atom Transfer and Hydrogen Atom Transfer Reactions with a Triflic Acid-Bound Nonheme Manganese(IV)-Oxo Complex via Outer-Sphere Electron Transfer

Yong Min Lee, Surin Kim, Kei Ohkubo, Kyung Ha Kim, Wonwoo Nam, Shunichi Fukuzumi

Journal of the American Chemical Society　Vol. 141　No. 6　p. 2614-2622　2019/02/13　Research paper (scientific journal)

A Pyropheophorbide Analogue Containing a Fused Methoxy Cyclohexenone Ring System Shows Promising Cancer-Imaging Ability

Aimee J. Marko, Mykhaylo Dukh, Nayan J. Patel, Joseph R. Missert, Tymish Ohulchanskyy, Walter A. Tabaczynski, Kei Ohkubo, Shunichi Fukuzumi, Rutao Yao, Munawwar Sajjad, Ravindra K. Pandey

ChemMedChem　Vol. 14　No. 16　p. 1503-1513　2019　Research paper (scientific journal)

Catalytic asymmetric allylation of aldehydes with alkenes through allylic C(sp³)-H functionalization mediated by organophotoredox and chiral chromium hybrid catalysis

Harunobu Mitsunuma, Shun Tanabe, Hiromu Fuse, Kei Ohkubo, Motomu Kanai

Chemical Science　Vol. 10　No. 12　p. 3459-3465　2019　Research paper (scientific journal)

Photochemical C-H oxygenation of side-chain methyl groups in polypropylene with chlorine dioxide

Kei Ohkubo, Haruyasu Asahara, Tsuyoshi Inoue

Chemical Communications　Vol. 55　No. 32　p. 4723-4726　2019　Research paper (scientific journal)

メラトニンのラジカル消去機構と放射線によるマウスの脂質過酸化に対する防護効果

中西 郁夫, Manda Kailash, 大久保 敬, 上野 恵美, 上林 將人, 小澤 俊彦, 安西 和紀, 松本 謙一郎

日本放射線影響学会大会講演要旨集　Vol. 61回　p. 96-96　2018/11

Long-Lived Photoexcited State of a Mn(IV)-Oxo Complex Binding Scandium Ions That is Capable of Hydroxylating Benzene

Namita Sharma, Jieun Jung, Kei Ohkubo, Yong-Min Lee, Mohamed E. El-Khouly, Wonwoo Nam, Shunichi Fukuzumi

Journal of the American Chemical Society　2018/07

Mechanistic Insights into Homogeneous Electrocatalytic and Photocatalytic Hydrogen Evolution Catalyzed by High-Spin Ni(II) Complexes with S<inf>2</inf>N<inf>2</inf>-Type Tetradentate Ligands

Dachao Hong, Yuto Tsukakoshi, Hiroaki Kotani, Tomoya Ishizuka, Kei Ohkubo, Yoshihito Shiota, Kazunari Yoshizawa, Shunichi Fukuzumi, Takahiko Kojima

Inorganic Chemistry　Vol. 57　No. 12　p. 7180-7190　2018/06/18　Research paper (scientific journal)

Inter- and Intramolecular Electron-Transfer Reduction Properties of Coronenediimide Derivatives via Photoinduced Processes

Motoki Yoshida, Hayato Sakai, Kei Ohkubo, Shunichi Fukuzumi, Taku Hasobe

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 122　No. 25　p. 13333-13346　2018/06　Research paper (scientific journal)

Mechanistic Insights into Homogeneous Electrocatalytic and Photocatalytic Hydrogen Evolution Catalyzed by High-Spin Ni(II) Complexes with S2N2‑Type Tetradentate Ligands

Hong, Dachao, Tsukakoshi, Yuto, Kotani, Hiroaki, Ishizuka, Tomoya, Ohkubo, Kei, Shiota, Yoshihito, Yoshizawa, Kazunari, Fukuzumi, Shunichi, Kojima, Takahiko

Inorganic Chemistry　Vol. 57　No. 12　p. 7180-7190　2018/05　Research paper (scientific journal)

A supramolecular photocatalyst composed of a polyoxometalate and a photosensitizing water-soluble porphyrin diacid for the oxidation of organic substrates in water

Tomoya Ishizuka, Shumpei Ohkawa, Hidemi Ochiai, Muneaki Hashimoto, Kei Ohkubo, Hiroaki Kotani, Masahiro Sadakane, Shunichi Fukuzumi, Takahiko Kojima

GREEN CHEMISTRY　Vol. 20　No. 9　p. 1975-1980　2018/05　Research paper (scientific journal)

Assemblies of Boron Dipyrromethene/Porphyrin, Phthalocyanine, and C60 Moieties as Artificial Models of Photosynthesis: Synthesis, Supramolecular Interactions, and Photophysical Studies

Xiao-Fei Chen, Mohamed E. El-Khouly, Kei Ohkubo, Shunichi Fukuzumi, Dennis K. P. Ng

Chemistry - A European Journal　Vol. 24　No. 15　p. 3862-3872　2018/03/12　Research paper (scientific journal)

Light-Driven C−H Oxygenation of Methane into Methanol and Formic Acid by Molecular Oxygen Using a Perfluorinated Solvent

Kei Ohkubo, Kensaku Hirose

Angewandte Chemie - International Edition　Vol. 57　No. 8　p. 2126-2129　2018/02/19　Research paper (scientific journal)

Light-Driven C−H Oxygenation of Methane into Methanol and Formic Acid by Molecular Oxygen Using a Perfluorinated Solvent

Kei Ohkubo, Kensaku Hirose

Angewandte Chemie - International Edition　Vol. 57　No. 8　p. 2126-2129　2018/02/19　Research paper (scientific journal)

Inside Back Cover: Light-Driven C−H Oxygenation of Methane into Methanol and Formic Acid by Molecular Oxygen Using a Perfluorinated Solvent (Angew. Chem. Int. Ed. 8/2018)

Kei Ohkubo, Kensaku Hirose

Angewandte Chemie International Edition　2018/02

A Triphenylamine-Naphthalenediimide-Fullerene Triad: Synthesis, Photoinduced Charge Separation and Solution-Processable Bulk Heterojunction Solar Cells

Doli Srivani, Akhil Gupta, Sidhanath V. Bhosale, Kei Ohkubo, Rajesh S. Bhosale, Shunichi Fukuzumi, Ante Bilic, Lathe A. Jones, Sheshanath V. Bhosale

ASIAN JOURNAL OF ORGANIC CHEMISTRY　Vol. 7　No. 1　p. 220-226　2018/01　Research paper (scientific journal)

Ionic manipulation of charge-transfer and photodynamics of [60]fullerene confined in pyrrolo-tetrathiafulvalene cage

Steffen Bahring, Karina R. Larsen, Mustafa Supur, Kent A. Nielsen, Thomas Poulsen, Kei Ohkubo, Craig W. Marlatt, Eigo Miyazaki, Kazuo Takimiya, Amar H. Flood, Shunichi Fukuzumi, Jan O. Jeppesen

CHEMICAL COMMUNICATIONS　Vol. 53　No. 71　p. 9898-9901　2017/09　Research paper (scientific journal)

Multi-level non-volatile organic transistor-based memory using lithium-ion-encapsulated fullerene as a charge trapping layer

Cuong Manh Tran, Heisuke Sakai, Yuki Kawashima, Kei Ohkubo, Shunichi Fukuzumi, Hideyuki Murata

ORGANIC ELECTRONICS　Vol. 45　p. 234-239　2017/06　Research paper (scientific journal)

Dihydroxylation of styrene by sodium chlorite with scandium triflate

Kei Ohkubo, Kensaku Hirose, Takekatsu Shibata, Kiyoto Takamori, Shunichi Fukuzumi

Journal of Physical Organic Chemistry　Vol. 30　No. 5　2017/05/01　Research paper (scientific journal)

Thermodynamics and Photodynamics of a Monoprotonated Porphyrin Directly Stabilized by Hydrogen Bonding with Polar Protic Solvents

Wataru Suzuki, Hiroaki Kotani, Tomoya Ishizuka, Kei Ohkubo, Yoshihito Shiota, Kazunari Yoshizawa, Shunichi Fukuzumi, Takahiko Kojima

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 23　No. 19　p. 4669-4679　2017/04　Research paper (scientific journal)

Exfoliation and supramolecular functionalization of graphene with an electron donor perylenediimide derivative

Luis Martin-Gomis, Nikos Karousis, Fernando Fernandez-Lazaro, Ioannis D. Petsalakis, Kei Ohkubo, Shunichi Fukuzumi, Nikos Tagmatarchis, Angela Sastre-Santos

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES　Vol. 16　No. 4　p. 596-605　2017/04　Research paper (scientific journal)

Selective CO Production in Photoelectrochemical Reduction of CO2 with a Cobalt Chlorin Complex Adsorbed on Multiwalled Carbon Nanotubes in Water

Shoko Aoi, Kentaro Mase, Kei Ohkubo, Tomoyoshi Suenobu, Shunichi Fukuzumi

ACS ENERGY LETTERS　Vol. 2　No. 3　p. 532-536　2017/03　Research paper (scientific journal)

Impact of peripheral substituents in regioselective synthesis of position-10 or position-20 bromo-bacteriochlorins

Mykhaylo Dukh, Penny Joshi, Kei Ohkubo, Walter Tabaczynski, Nayan J. Patel, Joseph R. Missert, Steve Zador, Shunichi Fukuzumi, Ravindra K. Pandey

TETRAHEDRON LETTERS　Vol. 58　No. 9　p. 851-854　2017/03　Research paper (scientific journal)

Dual function photocatalysis of cyano-bridged heteronuclear metal complexes for water oxidation and two-electron reduction of dioxygen to produce hydrogen peroxide as a solar fuel

Yusuke Aratani, Tomoyoshi Suenobu, Kei Ohkubo, Yusuke Yamada, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 53　No. 24　p. 3473-3476　2017/03　Research paper (scientific journal)

Synthesis of methylated quercetin analogues for enhancement of radical-scavenging activity

Kohei Imai, Ikuo Nakanishi, Kei Ohkubo, Yusuke Ohba, Takuya Arai, Mirei Mizuno, Shunichi Fukuzumi, Ken-ichiro Matsumoto, Kiyoshi Fukuhara

RSC ADVANCES　Vol. 7　No. 29　p. 17968-17979　2017　Research paper (scientific journal)

Photoinduced Electron Transfer in 9-Substituted 10-Methylacridinium Ions

Takeshi Tsudaka, Hiroaki Kotani, Kei Ohkubo, Tatsuo Nakagawa, Nikolai V. Tkachenko, Helge Lemmetyinen, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 23　No. 6　p. 1306-1317　2017/01　Research paper (scientific journal)

Photocatalyses of Ru(II)-Re(I) binuclear complexes connected through two ethylene chains for CO2 reduction

Ohkubo Kei, Yamazaki Yasuomi, Nakashima Takuya, Tamaki Yusuke, Koike Kazuhide, Ishitani Osamu

JOURNAL OF CATALYSIS　Vol. 343　p. 278-289　2016/11　Research paper (scientific journal)

Photocatalytic Reduction of Low Concentration of CO2

Takuya Nakajima, Yusuke Tamaki, Kazuki Ueno, Eishiro Kato, Tetsuya Nishikawa, Kei Ohkubo, Yasuomi Yamazaki, Tatsuki Morimoto, Osamu Ishitani

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 138　No. 42　p. 13818-13821　2016/10　Research paper (scientific journal)

Axially Substituted Silicon Phthalocyanine as Electron Donor in a Dyad and Triad with Azafullerene as Electron Acceptor for Photoinduced Charge Separation

Georgios Rotas, Luis Martin-Gomis, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi, Nikos Tagmatarchis, Angela Sastre-Santos

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 22　No. 42　p. 15137-15143　2016/10　Research paper (scientific journal)

Solvent-Free Photooxidation of Alkanes by Dioxygen with 2,3-Dichloro-5,6-dicyano-p-benzoquinone via Photoinduced Electron Transfer

Kei Ohkubo, Kensaku Hirose, Shunichi Fukuzumi

CHEMISTRY-AN ASIAN JOURNAL　Vol. 11　No. 16　p. 2255-2259　2016/08　Research paper (scientific journal)

Reactivity of 2,2-Diphenyl-1-picrylhydrazyl Solubilized in Water by beta-Cyclodextrin and Its Methylated Derivative

Ikuo Nakanishi, Kei Ohkubo, Masato Kamibayashi, Yukihiro Ogawa, Toshihiko Ozawa, Ken-Ichiro Matsumoto, Shunichi Fukuzumi

CHEMISTRYSELECT　Vol. 1　No. 12　p. 3367-3370　2016/08　Research paper (scientific journal)

Catalytic reduction of proton, oxygen and carbon dioxide with cobalt macrocyclic complexes

Kentaro Mase, Shoko Aoi, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 20　No. 8-11　p. 935-949　2016/08　Research paper (scientific journal)

Catalytic Hydroxylation of Benzene to Phenol by Dioxygen with an NADH Analogue

Kensaku Hirose, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 22　No. 36　p. 12904-12909　2016/08　Research paper (scientific journal)

Controllable Threshold Voltage in Organic Complementary Logic Circuits with an Electron-Trapping Polymer and Photoactive Gate Dielectric Layer

Toan Thanh Dao, Heisuke Sakai, Hai Thanh Nguyen, Kei Ohkubo, Shunichi Fukuzumi, Hideyuki Murate

ACS APPLIED MATERIALS & INTERFACES　Vol. 8　No. 28　p. 18249-18255　2016/07　Research paper (scientific journal)

Photocatalytic Oxygenation of Substrates by Dioxygen with Protonated Manganese(III) Corrolazine

Jieun Jung, Heather M. Neu, Pannee Leeladee, Maxime A. Siegler, Kei Ohkubo, David P. Goldberg, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 55　No. 7　p. 3218-3228　2016/04　Research paper (scientific journal)

Aromatic Monochlorination Photosensitized by DDQ with Hydrogen Chloride under Visible-Light Irradiation

Kei Ohkubo, Atsushi Fujimoto, Shunichi Fukuzumi

CHEMISTRY-AN ASIAN JOURNAL　Vol. 11　No. 7　p. 996-999　2016/04　Research paper (scientific journal)

Enhanced Electron Transfer Reactivity of a Nonheme Iron(IV)-Imido Complex as Compared to the Iron(IV)-Oxo Analogue

Anil Kumar Vardhaman, Yong-Min Lee, Jieun Jung, Kei Ohkubo, Wonwoo Nam, Shunichi Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 55　No. 11　p. 3709-3713　2016/03　Research paper (scientific journal)

Effect of Metalation on Porphyrin-Based Bifunctional Agents in Tumor Imaging and Photodynamic Therapy

Nayan J. Patel, Yihui Chen, Penny Joshi, Paula Pera, Heinz Baumann, Joseph R. Missert, Kei Ohkubo, Shunichi Fukuzumi, Roger R. Nani, Martin J. Schnermann, Ping Chen, Jialiang Zhu, Karl M. Kadish, Ravindra K. Pandey

BIOCONJUGATE CHEMISTRY　Vol. 27　No. 3　p. 667-680　2016/03　Research paper (scientific journal)

Photoinduced Processes of Supramolecular Nanoarrays Composed of Porphyrin and Benzo[ghi]perylenetriimide Units through Triple Hydrogen Bonds with One-Dimensional Columnar Phases

Hayato Sakai, Kei Ohkubo, Shunichi Fukuzumi, Taku Hasobe

CHEMISTRY-AN ASIAN JOURNAL　Vol. 11　No. 4　p. 613-624　2016/02　Research paper (scientific journal)

Two-phase oxidation of toluene derivatives by dioxygen using the 3-cyano-1-decylquinolinium ion as a photocatalyst

Kei Ohkubo, Kensaku Hirose, Shunichi Fukuzumi

RSC Advances　Vol. 6　No. 47　p. 41011-41014　2016　Research paper (scientific journal)

Synthetically tuneable biomimetic artificial photosynthetic reaction centres that closely resemble the natural system in purple bacteria

Sai-Ho Lee, Iain M. Blake, Allan G. Larsen, James A. McDonald, Kei Ohkubo, Shunichi Fukuzumi, Jeffrey R. Reimers, Maxwell J. Crossley

CHEMICAL SCIENCE　Vol. 7　No. 10　p. 6534-6550　2016　Research paper (scientific journal)

Synthetic control over intra- and intermolecular charge transfer can turn on the fluorescence emission of non-emissive coumarin

Byung Hak Jhun, Kei Ohkubo, Shunichi Fukuzumi, Youngmin You

JOURNAL OF MATERIALS CHEMISTRY C　Vol. 4　No. 20　p. 4556-4567　2016　Research paper (scientific journal)

Photooxygenation of alkanes by dioxygen with p-benzoquinone derivatives with high quantum yields

Kei Ohkubo, Kensaku Hirose, Shunichi Fukuzumi

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES　Vol. 15　No. 6　p. 731-734　2016　Research paper (scientific journal)

Photoinduced electron transfer in porous organic salt crystals impregnated with fullerenes

Tetsuya Hasegawa, Kei Ohkubo, Ichiro Hisaki, Mikiji Miyata, Norimitsu Tohnai, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 52　No. 51　p. 7928-7931　2016　Research paper (scientific journal)

Photocatalytic reduction of CO2 and H2O to CO and H-2 with a cobalt chlorin complex adsorbed on multi-walled carbon nanotubes

Shoko Aoi, Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

CATALYSIS SCIENCE & TECHNOLOGY　Vol. 6　No. 12　p. 4077-4080　2016　Research paper (scientific journal)

Photocatalytic oxidation of iron(II) complexes by dioxygen using 9-mesityl-10-methylacridinium ions

Takeshi Tsudaka, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 52　No. 36　p. 6178-6180　2016　Research paper (scientific journal)

Electrochemical reduction of cationic Li+ @C-60 to neutral Li+@C-60(center dot-): isolation and characterisation of endohedral [60] fulleride

Hiroshi Ueno, Shinobu Aoyagi, Yu Yamazaki, Kei Ohkubo, Naohiko Ikuma, Hiroshi Okada, Tatsuhisa Kato, Yutaka Matsuo, Shunichi Fukuzumi, Ken Kokubo

CHEMICAL SCIENCE　Vol. 7　No. 9　p. 5770-5774　2016　Research paper (scientific journal)

Cyclic Tetramers of Zinc Chlorophylls as a Coupled Light-Harvesting Antenna-Charge-Separation System

Yoshinao Shinozaki, Kei Ohkubo, Shunichi Fukuzumi, Kosuke Sugawa, Joe Otsuki

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 22　No. 3　p. 1165-1176　2016/01　Research paper (scientific journal)

An amphoteric reactivity of a mixed-valent bis(mu-oxo)dimanganese(III,IV) complex acting as an electrophile and a nucleophile

Muniyandi Sankaralingam, So Hyun Jeon, Yong-Min Lee, Mi Sook Seo, Kei Ohkubo, Shunichi Fukuzumi, Wonwoo Nam

DALTON TRANSACTIONS　Vol. 45　No. 1　p. 376-383　2016　Research paper (scientific journal)

Aluminium ion-promoted radical-scavenging reaction of methylated hydroquinone derivatives

Ikuo Nakanishi, Kei Ohkubo, Yukihiro Ogawa, Ken-ichiro Matsumoto, Toshihiko Ozawa, Shunichi Fukuzumi

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 14　No. 33　p. 7956-7961　2016　Research paper (scientific journal)

A profluorescent nitroxide probe for ascorbic acid detection and its application to quantitative analysis of diabetic rat plasma

Yuta Matsuoka, Kei Ohkubo, Toshihide Yamasaki, Mayumi Yamato, Hiroshi Ohtabu, Tomonori Shirouzu, Shunichi Fukuzumi, Ken-ichi Yamada

RSC ADVANCES　Vol. 6　No. 65　p. 60907-60915　2016　Research paper (scientific journal)

Lewis Acid Coupled Electron Transfer of Metal-Oxygen Intermediates

Shunichi Fukuzumi, Kei Ohkubo, Yong-Min Lee, Wonwoo Nam

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 49　p. 17548-17559　2015/12　Research paper (scientific journal)

Laser-Induced Dynamics of Peroxodicopper(II) Complexes Vary with the Ligand Architecture. One-Photon Two-Electron O-2 Ejection and Formation of Mixed-Valent (CuCuII)-Cu-I-Superoxide Intermediates

Claudio Saracini, Kei Ohkubo, Tomoyoshi Suenobu, Gerald J. Meyer, Kenneth D. Karlin, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 137　No. 50　p. 15865-15874　2015/12　Research paper (scientific journal)

Photocatalytic H-2 evolution from NADH with carbon quantum dots/Pt and 2-phenyl-4-(1-naphthyl)quinolinium ion

Wenting Wu, Liying Zhan, Kei Ohkubo, Yusuke Yamada, Mingbo Wu, Shunichi Fukuzumi

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY　Vol. 152　p. 63-70　2015/11　Research paper (scientific journal)

Modulation of Energy Conversion Processes in Carbonaceous Molecular Bearings

Shunpei Hitosugi, Kei Ohkubo, Yuki Kawashima, Taisuke Matsuno, Sho Kamata, Kosuke Nakamura, Hirohiko Kono, Sota Sato, Shunichi Fukuzumi, Hiroyuki Isobe

CHEMISTRY-AN ASIAN JOURNAL　Vol. 10　No. 11　p. 2404-2410　2015/11　Research paper (scientific journal)

Long-Lived Photoinduced Charge Separation in Inclusion Complexes Composed of a Phenothiazine-Bridged Cyclic Porphyrin Dimer and Fullerenes

Takuya Kamimura, Kei Ohkubo, Yuki Kawashima, Shuwa Ozako, Ken-ichi Sakaguchi, Shunichi Fukuzumi, Fumito Tani

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 119　No. 45　p. 25634-25650　2015/11　Research paper (scientific journal)

Effect of alkyl group on transnitrosation of N-nitrosothiazolidine thiocarboxamides

Keiko Inami, Yuta Ono, Sonoe Kondo, Ikuo Nakanishi, Kei Ohkubo, Shunichi Fukuzumi, Masataka Mochizuki

BIOORGANIC & MEDICINAL CHEMISTRY　Vol. 23　No. 20　p. 6733-6739　2015/10　Research paper (scientific journal)

One-Step Selective Hydroxylation of Benzene to Phenol

Shunichi Fukuzumi, Kei Ohkubo

ASIAN JOURNAL OF ORGANIC CHEMISTRY　Vol. 4　No. 9　p. 836-845　2015/09

Activationless Electron Self-Exchange of High-Valent Oxo and Imido Complexes of Chromium Corroles

Shuo Liu, Jieun Jung, Kei Ohkubo, Scott D. Hicks, Curt J. Bougher, Mandi M. Abu-Omar, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 54　No. 18　p. 9223-9228　2015/09　Research paper (scientific journal)

A simple zinc-porphyrin-NDI dyad system generates a light energy to proton potential across a lipid membrane

Melissa M. A. Kelson, Rajesh S. Bhosale, Kei Ohkubo, Lathe A. Jones, Sidhanath V. Bhosale, Akhil Gupta, Shunichi Fukuzumi, Sheshanath V. Bhosale

DYES AND PIGMENTS　Vol. 120　p. 340-346　2015/09　Research paper (scientific journal)

Formation of Ground State Triplet Diradicals from Annulated Rosarin Derivatives by Triprotonation

Shunichi Fukuzumi, Kei Ohkubo, Masatoshi Ishida, Christian Preihs, Bo Chen, Weston Thatcher Borden, Dongho Kim, Jonathan L. Sessler

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 137　No. 31　p. 9780-9783　2015/08　Research paper (scientific journal)

Coronenetetraimide-Centered Cruciform Pentamers Containing Multiporphyrin Units: Synthesis and Sequential Photoinduced Energy- and Electron-Transfer Dynamics

Taku Hasobe, Koichi Ida, Hayato Sakai, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 31　p. 11196-11205　2015/07　Research paper (scientific journal)

Near-Infrared Photoelectrochemical Conversion via Photoinduced Charge Separation in Supramolecular Complexes of Anionic Phthalocyanines with Li+@C-60

Yuki Kawashima, Kei Ohkubo, Vicente Manuel Blas-Ferrando, Hayato Sakai, Enrique Font-Sanchis, Javier Ortiz, Fernando Fernandez-Lazaro, Taku Hasobe, Angela Sastre-Santos, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 119　No. 24　p. 7690-7697　2015/06　Research paper (scientific journal)

Efficient Epoxidation of Styrene Derivatives by a Nonheme Iron(IV)-Oxo Complex via Proton-Coupled Electron Transfer with Triflic Acid

Jiyun Park, Yong-Min Lee, Kei Ohkubo, Wonwoo Nam, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 54　No. 12　p. 5806-5812　2015/06　Research paper (scientific journal)

Broadband Light Harvesting and Fast Charge Separation in Ordered Self-Assemblies of Electron Donor-Acceptor-Functionalized Graphene Oxide Layers for Effective Solar Energy Conversion

Mustafa Supur, Yuki Kawashima, Kentaro Mase, Kei Ohkubo, Taku Hasobe, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 119　No. 24　p. 13488-13495　2015/06　Research paper (scientific journal)

Solubilisation of a 2,2-diphenyl-1-picrylhydrazyl radical in water by β-cyclodextrin to evaluate the radical-scavenging activity of antioxidants in aqueous media.

Ikuo Nakanishi, Kei Ohkubo, Kohei Imai, Masato Kamibayashi, Yasuo Yoshihashi, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Katsuhide Terada, Shinobu Itoh, Toshihiko Ozawa, Shunichi Fukuzumi

Chemical communications (Cambridge, England)　Vol. 51　No. 39　p. 8311-4　2015/05/14　Research paper (scientific journal)

Catalytic Two-Electron Reduction of Dioxygen by Ferrocene Derivatives with Manganese(V) Corroles

Jieun Jung, Shuo Liu, Kei Ohkubo, Mahdi M. Abu-Omar, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 54　No. 9　p. 4285-4291　2015/05　Research paper (scientific journal)

Tetraphenylethene-Based Star Shaped Porphyrins: Synthesis, Self-assembly, and Optical and Photophysical Study

Anushri Rananaware, Rajesh S. Bhosale, Kei Ohkubo, Hemlata Patil, Lathe A. Jones, Sam L. Jackson, Shunichi Fukuzumi, Sidhanath V. Bhosale, Sheshanath V. Bhosale

JOURNAL OF ORGANIC CHEMISTRY　Vol. 80　No. 8　p. 3832-3840　2015/04　Research paper (scientific journal)

Light-Driven, Proton-Controlled, Catalytic Aerobic C-H Oxidation Mediated by a Mn(III) Porphyrinoid Complex

Heather M. Neu, Jieun Jung, Regina A. Baglia, Maxime A. Siegler, Kei Ohkubo, Shunichi Fukuzumi, David P. Goldberg

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 137　No. 14　p. 4614-4617　2015/04　Research paper (scientific journal)

マウス乳腺がん細胞に対するポルフィリン化合物の超音波増感活性と作用機序の解析

島村 義樹, 玉谷 大, 水木 佑輔, 國安 翔太, 遠藤 良夫, 大久保 敬, 中西 郁夫, 久保 健太郎, 口池 大輔, 乾 利夫, 宇都 義浩

日本薬学会年会要旨集　Vol. 135年会　No. 2　p. 194-194　2015/03

Lewis Acid-Induced Change from Four- to Two-Electron Reduction of Dioxygen Catalyzed by Copper Complexes Using Scandium Triflate

Saya Kakuda, Clarence J. Rolle, Kei Ohkubo, Maxime A. Siegler, Kenneth D. Karlin, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 137　No. 9　p. 3330-3337　2015/03　Research paper (scientific journal)

Solvent-Free One-Step Photochemical Hydroxylation of Benzene Derivatives by the Singlet Excited State of 2,3-Dichloro-5,6-dicyano-p-benzoquinone Acting as a Super Oxidant

Kei Ohkubo, Kensaku Hirose, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 7　p. 2855-2861　2015/02　Research paper (scientific journal)

Much Enhanced Catalytic Reactivity of Cobalt Chlorin Derivatives on Two-Electron Reduction of Dioxygen to Produce Hydrogen Peroxide

Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 54　No. 4　p. 1808-1815　2015/02　Research paper (scientific journal)

Ru(II)-Re(I) binuclear photocatalysts connected by -CH2XCH2- (X = O, S, CH2) for CO2 reduction

Eishiro Kato, Hiroyuki Takeda, Kazuhide Koike, Kei Ohkubo, Osamu Ishitani

CHEMICAL SCIENCE　Vol. 6　No. 5　p. 3003-3012　2015　Research paper (scientific journal)

Multiple photosynthetic reaction centres of porphyrinic polypeptide-Li+@C-60 supramolecular complexes

Kei Ohkubo, Tetsuya Hasegawa, Regis Rein, Nathalie Solladie, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 99　p. 17517-17520　2015　Research paper (scientific journal)

Efficient singlet oxygen generation from sugar pendant C-60 derivatives for photodynamic therapy

Shigenobu Yano, Masami Naemura, Akio Toshimitsu, Motofusa Akiyama, Atsushi Ikeda, Jun-ichi Kikuchi, Xiande Shen, Qian Duan, Atsushi Narumi, Masahiro Inoue, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 93　p. 16605-16608　2015　Research paper (scientific journal)

Catalytic two-electron reduction of dioxygen catalysed by metal-free [14]triphyrin(2.1.1)

Kentaro Mase, Kei Ohkubo, Zhaoli Xue, Hiroko Yamada, Shunichi Fukuzumi

CHEMICAL SCIENCE　Vol. 6　No. 11　p. 6496-6504　2015　Research paper (scientific journal)

Efficient singlet oxygen generation from sugar pendant C-60 derivatives for photodynamic therapy

Shigenobu Yano, Masami Naemura, Akio Toshimitsu, Motofusa Akiyama, Atsushi Ikeda, Jun-ichi Kikuchi, Xiande Shen, Qian Duan, Atsushi Narumi, Masahiro Inoue, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 93　p. 16605-16608　2015　Research paper (scientific journal)

Ultrafast photoinduced electron transfer in face-to-face charge-transfer pi-complexes of planar porphyrins and hexaazatriphenylene derivatives

Toru Aoki, Hayato Sakai, Kei Ohkubo, Tomo Sakanoue, Taishi Takenobu, Shunichi Fukuzumi, Taku Hasobe

CHEMICAL SCIENCE　Vol. 6　No. 2　p. 1498-1509　2015　Research paper (scientific journal)

Synthesis and photodynamics of diphenylethynyl-bridged porphyrin-quinoidal porphyrin hybrids

Shuhei Sakatani, Takuya Kamimura, Kei Ohkubo, Shunichi Fukuzumi, Fumito Tani

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 19　No. 1-3　p. 219-232　2015/01　Research paper (scientific journal)

Size-selective incorporation of donor-acceptor linked dyad cations into zeolite Y and long-lived charge separation

Shunichi Fukuzumi, Akinori Itoh, Kei Ohkubo, Tomoyoshi Suenobu

RSC ADVANCES　Vol. 5　No. 56　p. 45582-45585　2015　Research paper (scientific journal)

Singlet oxygen generation from Li+@C-60 nano-aggregates dispersed by laser irradiation in aqueous solution

Kei Ohkubo, Naoki Kohno, Yusuke Yamada, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 38　p. 8082-8085　2015　Research paper (scientific journal)

Selective electrochemical reduction of CO2 to CO with a cobalt chlorin complex adsorbed on multi-walled carbon nanotubes in water

Shoko Aoi, Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 50　p. 10226-10228　2015　Research paper (scientific journal)

Redox behavior of novel nickel and palladium complexes supported by trianionic non-innocent ligand containing beta-diketiminate and phenol groups

Yuma Morimoto, June Takaichi, Shinichi Hanada, Kei Ohkubo, Hideki Sugimoto, Nobutaka Fujieda, Shunichi Fukuzumi, Shinobu Itoh

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 19　No. 1-3　p. 377-387　2015/01　Research paper (scientific journal)

Photoinduced electron transfer in a supramolecular triad produced by porphyrin anion-induced electron transfer from tetrathiafulvalene calix[4]pyrrole to Li+@C-60

Christina M. Davis, Kei Ohkubo, Aaron D. Lammer, Dong Sub Kim, Yuki Kawashima, Jonathan L. Sessler, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 48　p. 9789-9792　2015　Research paper (scientific journal)

On-off switch of charge-separated states of pyridine-vinylene-linked porphyrin-C-60 conjugates detected by EPR

Sabrina V. Kirner, Danny Arteaga, Christian Henkel, Johannes T. Margrat, Nuria Alegret, Kei Ohkubo, Braulio Insuasty, Alejandro Ortiz, Nazario Martin, Luis Echegoyen, Shunichi Fukuzumi, Timothy Clark, Dirk M. Guldi

CHEMICAL SCIENCE　Vol. 6　No. 10　p. 5994-6007　2015　Research paper (scientific journal)

Near-infrared-induced electron transfer of an uranyl macrocyclic complex without energy transfer to dioxygen

Christina M. Davis, Kei Ohkubo, I-Ting Ho, Zhan Zhang, Masatoshi Ishida, Yuanyuan Fang, Vincent M. Lynch, Karl M. Kadish, Jonathan L. Sessler, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 31　p. 6757-6760　2015　Research paper (scientific journal)

Metal-free hydrogen evolution with nanoparticles derived from pyrene via two-photon ionization induced by laser irradiation

Kei Ohkubo, Naoki Kohno, Yusuke Yamada, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 57　p. 11515-11518　2015　Research paper (scientific journal)

Mechanisms and applications of cyclometalated Pt(II) complexes in photoredox catalytic trifluoromethylation

Won Joon Choi, Sungkyu Choi, Kei Ohkubo, Shunichi Fukuzumi, Eun Jin Cho, Youngmin You

CHEMICAL SCIENCE　Vol. 6　No. 2　p. 1454-1464　2015　Research paper (scientific journal)

Mechanism of a one-photon two-electron process in photocatalytic hydrogen evolution from ascorbic acid with a cobalt chlorin complex

Shoko Aoi, Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 82　p. 15145-15148　2015　Research paper (scientific journal)

Laser-induced pinpoint hydrogen evolution from benzene and water using metal free single-walled carbon nanotubes with high quantum yields

Kei Ohkubo, Naoki Kohno, Yusuke Yamada, Shunichi Fukuzumi

CHEMICAL SCIENCE　Vol. 6　No. 1　p. 666-674　2015　Research paper (scientific journal)

Graphene oxide-Li+@C-60 donor-acceptor composites for photoenergy conversion

Mustafa Supur, Yuki Kawashima, Kei Ohkubo, Hayato Sakai, Taku Hasobe, Shunichi Fukuzumi

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 17　No. 24　p. 15732-15738　2015　Research paper (scientific journal)

Enzyme repurposing of a hydrolase as an emergent peroxidase upon metal binding

Nobutaka Fujieda, Jonas Schaetti, Edward Stuttfeld, Kei Ohkubo, Timm Maier, Shunichi Fukuzumi, Thomas R. Ward

CHEMICAL SCIENCE　Vol. 6　No. 7　p. 4060-4065　2015　Research paper (scientific journal)

Energy migration within hexameric hemoprotein reconstituted with Zn porphyrinoid molecules

Koji Oohora, Tsuyoshi Mashima, Kei Ohkubo, Shunichi Fukuzumi, Takashi Hayashi

CHEMICAL COMMUNICATIONS　Vol. 51　No. 55　p. 11138-11140　2015　Research paper (scientific journal)

Efficient Charge Separation in Li+@C-60 Supramolecular Complexes with Electron Donors

Yuki Kawashima, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-AN ASIAN JOURNAL　Vol. 10　No. 1　p. 44-54　2015/01

Does a nitrogen matter? Synthesis and photoinduced electron transfer of perylenediimide donors covalently linked to C59N and C-60 acceptors

Luis Martin-Gomis, Georgios Rotas, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi, Nikos Tagmatarchis, Angela Sastre-Santos

NANOSCALE　Vol. 7　No. 16　p. 7437-7444　2015　Research paper (scientific journal)

Supramolecular Formation of Li+@PCBM Fullerene with Sulfonated Porphyrins and Long-Lived Charge Separation

Yuki Kawashima, Kei Ohkubo, Hiroshi Okada, Yutaka Matsuo, Shunichi Fukuzumi

CHEMPHYSCHEM　Vol. 15　No. 17　p. 3782-3790　2014/12　Research paper (scientific journal)

Photoinduced charge separation in ordered self-assemblies of perylenediimide-graphene oxide hybrid layers

Mustafa Supur, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 50　No. 87　p. 13359-13361　2014/11　Research paper (scientific journal)

Binding of Scandium Ions to Metalloporphyrin-Flavin Complexes for Long-Lived Charge Separation

Takahiko Kojima, Ryosuke Kobayashi, Tomoya Ishizuka, Shinya Yamakawa, Hiroaki Kotani, Tatsuaki Nakanishi, Kei Ohkubo, Yoshihito Shiota, Kazunari Yoshizawa, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 20　No. 47　p. 15518-15532　2014/11　Research paper (scientific journal)

Robust Inclusion Complexes of Crown Ether Fused Tetrathiafulvalenes with Li+@C-60 to Afford Efficient Photodriven Charge Separation

Mustafa Supur, Yuki Kawashima, Karina R. Larsen, Kei Ohkubo, Jan O. Jeppesen, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 20　No. 43　p. 13976-13983　2014/10　Research paper (scientific journal)

Photoelectrochemical properties of supramolecular composites of an anionic zinc chlorin and Li+@C-60 on SnO2

Kei Ohkubo, Yuki Kawashima, Kentaro Mase, Hayato Sakai, Taku Hasobe, Shunichi Fukuzumi

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 18　No. 10-11　p. 982-990　2014/10　Research paper (scientific journal)

Formation of the Long-Lived Charge-Separated State of the 9-Mesityl-10-methylacridinium Cation Incorporated into Mesoporous Aluminosilicate at High Temperatures

Shunichi Fukuzumi, Akinori Itoh, Tomoyoshi Suenobu, Kei Ohkubo

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 118　No. 41　p. 24188-24196　2014/10　Research paper (scientific journal)

Photoinduced Electron Transfer in a Charge-Transfer Complex Formed between Corannulene and Li+@C-60 by Concave-Convex pi-pi Interactions

Mihoko Yamada, Kei Ohkubo, Mitsuhiko Shionoya, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 136　No. 38　p. 13240-13248　2014/09　Research paper (scientific journal)

Sumanenetrione Anions Generated by Electrochemical and Chemical Reduction

Shuhei Higashibayashi, Binod Babu Shrestha, Yuki Morita, Masahiro Ehara, Kei Ohkubo, Shunichi Fukuzumi, Hidehiro Sakurai

CHEMISTRY LETTERS　Vol. 43　No. 8　p. 1297-1299　2014/08　Research paper (scientific journal)

Photocatalytic Oxygenation of 10-Methyl-9,10-dihydroacridine by O-2 with Manganese Porphyrins

Jieun Jung, Kei Ohkubo, David P. Godberg, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 118　No. 32　p. 6223-6229　2014/08　Research paper (scientific journal)

Organic synthetic transformations using organic dyes as photoredox catalysts

Shunichi Fukuzumi, Kei Ohkubo

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 12　No. 32　p. 6059-6071　2014/08

Evaluation of the Sonosensitizing Activities of 5-Aminolevulinic Acid and Sn(IV) Chlorin e6 in Tumor-bearing Chick Embryos

Yoshihiro Uto, Dai Tamatani, Yusuke Mizuki, Yoshio Endo, Ikuo Nakanishi, Kei Ohkubo, Shunichi Fukuzumi, Masahiro Ishizuka, Tohru Tanaka, Daisuke Kuchiike, Kentaro Kubo, Toshio Inui, Hitoshi Hori

ANTICANCER RESEARCH　Vol. 34　No. 8　p. 4583-4587　2014/08　Research paper (scientific journal)

Cyclo[8]pyrrole: An Androgynous Expanded Porphyrin That Acts as Both an Electron Donor and Acceptor in Anion-Bound Supramolecular Electron Donor-Acceptor Complexes

Kei Ohkubo, Kentaro Mase, Elizabeth Karnas, Jonathan L. Sessler, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 118　No. 32　p. 18436-18444　2014/08　Research paper (scientific journal)

Mechanistic Insights into the Oxidation of Substituted Phenols via Hydrogen Atom Abstraction by a Cupric-Superoxo Complex

Jung Yoon Lee, Ryan L. Peterson, Kei Ohkubo, Isaac Garcia-Bosch, Richard A. Himes, Julia Woertink, Cathy D. Moore, Edward I. Solomon, Shunichi Fukuzumi, Kenneth D. Karlin

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 136　No. 28　p. 9925-9937　2014/07　Research paper (scientific journal)

Redox Chemistry of Nickel(II) Complexes Supported by a Series of Noninnocent beta-Diketiminate Ligands

June Takaichi, Yuma Morimoto, Kei Ohkubo, Chizu Shimokawa, Takayuki Hojo, Seiji Mori, Haruyasu Asahara, Hideki Sugimoto, Nobutaka Fujieda, Nagatoshi Nishiwaki, Shunichi Fukuzumi, Shinobu Itoh

INORGANIC CHEMISTRY　Vol. 53　No. 12　p. 6159-6169　2014/06　Research paper (scientific journal)

Photoinduced Electron Transfer in a Dynamic Supramolecular System with Curved pi-Structures

Shunpei Hitosugi, Kei Ohkubo, Ryosuke Iizuka, Yuki Kawashima, Kosuke Nakamura, Sota Sato, Hirohiko Kono, Shunichi Fukuzumi, Hiroyuki Isobe

ORGANIC LETTERS　Vol. 16　No. 12　p. 3352-3355　2014/06　Research paper (scientific journal)

Photoinduced Electron Transfer from a Tetrathiafulvalene-Calix[4]pyrrole to a Porphyrin Carboxylate within a Supramolecular Ensemble

Christina M. Davis, Yuki Kawashima, Kei Ohkubo, Jong Min Lim, Dongho Kim, Shunichi Fukuzumi, Jonathan L. Sessler

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 118　No. 25　p. 13503-13513　2014/06　Research paper (scientific journal)

Photochemical Behavior of Single-Walled Carbon Nanotubes in the Presence of Propylamine

Yutaka Maeda, Yuhei Hasuike, Kei Ohkubo, Atsushi Tashiro, Shinya Kaneko, Masayuki Kikuta, Michio Yamada, Tadashi Hasegawa, Takeshi Akasaka, Jing Zhou, Jing Lu, Shigeru Nagase, Shunichi Fukuzumi

CHEMPHYSCHEM　Vol. 15　No. 9　p. 1821-1826　2014/06　Research paper (scientific journal)

Long-Lived Charge Separation and Applications in Artificial Photosynthesis

Shunichi Fukuzumi, Kei Ohkubo, Tomoyoshi Suenobu

ACCOUNTS OF CHEMICAL RESEARCH　Vol. 47　No. 5　p. 1455-1464　2014/05

Electron-Transfer Reduction Properties and Excited-State Dynamics of Benzo[ghi]peryleneimide and Coroneneimide Derivatives

Koichi Ida, Hayato Sakai, Kei Ohkubo, Yasuyuki Araki, Takehiko Wada, Tomo Sakanoue, Taishi Takenobu, Shunichi Fukuzumi, Taku Hasobe

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 118　No. 14　p. 7710-7720　2014/04　Research paper (scientific journal)

腫瘍移植鶏卵モデルを用いた5-aminolevulinic acidおよびTin chlorin e6の超音波増感活性の評価

玉谷 大, 宇都 義浩, 水木 佑輔, 國安 翔太, 野口 智帆, 遠藤 良夫, 中西 郁夫, 大久保 敬, 石塚 昌宏, 田中 徹, 口池 大輔, 久保 健太郎, 乾 利夫, 堀 均

日本薬学会年会要旨集　Vol. 134年会　No. 2　p. 233-233　2014/03

Photochemical Oxidation of a Manganese(III) Complex with Oxygen and Toluene Derivatives to Form the Manganese(V)-Oxo Complex

J. Jung, K. Ohkubo, S. Fukuzumi, K. Prokop-Prigge, D. P. Goldberg, S. Fukuzumi

JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY　Vol. 19　p. S462-S462　2014/03

Efficient Two-Electron Reduction of Dioxygen to Hydrogen Peroxide with a Small Overpotential Catalyzed by a Cobalt Chlorin Complex

K. Mase, K. Ohkubo, S. Fukuzumi, S. Fukuzumi

JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY　Vol. 19　p. S528-S528　2014/03

Macrocyclic Dyads Based on C-60 and Perylenediimides Connected by Click Chemistry

Sara Pla, Luis Martin-Gomis, Kei Ohkubo, Shunichi Fukuzumi, Fernando Fernandez-Lazaro, Angela Sastre-Santos

ASIAN JOURNAL OF ORGANIC CHEMISTRY　Vol. 3　No. 2　p. 185-197　2014/02　Research paper (scientific journal)

Enhancement of ultraviolet light responsivity of a pentacene phototransistor by introducing photoactive molecules into a gate dielectric

Toan Thanh Dao, Toshinori Matsushima, Motonobu Murakami, Kei Ohkubo, Shunichi Fukuzumi, Hideyuki Murata

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 53　No. 2　2014/02　Research paper (scientific journal)

Bisdonor-azaBODIPY-Fullerene Supramolecules: Syntheses, Characterization, and Light-Induced Electron-Transfer Studies

Venugopal Bandi, Mohamed E. El-Khouly, Kei Ohkubo, Vladimir N. Nesterov, Melvin E. Zandler, Shunichi Fukuzumi, Francis D'Souza

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 118　No. 5　p. 2321-2332　2014/02　Research paper (scientific journal)

Submillisecond-lived photoinduced charge separation in a fully conjugated phthalocyanine-perylenebenzimidazole dyad

Vicente M. Blas-Ferrando, Javier Ortiz, Kei Ohkubo, Shunichi Fukuzumi, Fernando Fernandez-Lazaro, Angela Sastre-Santos

CHEMICAL SCIENCE　Vol. 5　No. 12　p. 4785-4793　2014　Research paper (scientific journal)

Photoinduced electron transfer in a carbon nanohorn-C-60 conjugate

Maria Vizuete, Maria Jose Gomez-Escalonilla, Jose Luis G. Fierro, Kei Ohkubo, Shunichi Fukuzumi, Masako Yudasaka, Sumio Iijima, Jean-Francois Nierengarten, Fernando Langa

CHEMICAL SCIENCE　Vol. 5　No. 5　p. 2072-2080　2014　Research paper (scientific journal)

Long-lived charge-separated states produced in supramolecular complexes between anionic and cationic porphyrins

Nathan L. Bill, Masatoshi Ishida, Yuki Kawashima, Kei Ohkubo, Young Mo Sung, Vincent M. Lynch, Jong Min Lim, Dongho Kim, Jonathan L. Sessler, Shunichi Fukuzumi

CHEMICAL SCIENCE　Vol. 5　No. 10　p. 3888-3896　2014　Research paper (scientific journal)

Long-lived charge separation in a rigid pentiptycene bis(crown ether)-Li+@C-60 host-guest complex

Mustafa Supur, Yuki Kawashima, Ying-Xian Ma, Kei Ohkubo, Chuan-Feng Chen, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 50　No. 99　p. 15796-15798　2014　Research paper (scientific journal)

Highly efficient cycloreversion of photochromic dithienylethene compounds using visible light-driven photoredox catalysis

Sumin Lee, Youngmin You, Kei Ohkubo, Shunichi Fukuzumi, Wonwoo Nam

CHEMICAL SCIENCE　Vol. 5　No. 4　p. 1463-1474　2014　Research paper (scientific journal)

Electronic infrared light absorption of a tri-palladium complex containing two pi-expanded tetracene ligands

Tsuyoshi Suzuki, Takafumi Nakagawa, Kei Ohkubo, Shunichi Fukuzumi, Yutaka Matsuo

CHEMICAL SCIENCE　Vol. 5　No. 12　p. 4888-4894　2014　Research paper (scientific journal)

Disproportionation of a 2,2-diphenyl-1-picrylhydrazyl radical as a model of reactive oxygen species catalysed by Lewis and/or Bronsted acids

Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Tsukasa Waki, Yoshihiro Uto, Tadashi Kamada, Toshihiko Ozawa, Ken-ichiro Matsumotoa, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 50　No. 7　p. 814-816　2014　Research paper (scientific journal)

Control of reaction pathways in the photochemical reaction of a quinone with tetramethylethylene by metal binding

Hiroaki Yamamoto, Kei Ohkubo, Seiji Akimoto, Shunichi Fukuzumi, Akihiko Tsuda

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 12　No. 36　p. 7004-7017　2014　Research paper (scientific journal)

Erratum: Comparison of in vivo and in vitro antioxidative parameters for eleven food factors (RSC Advances (2013) DOI:10.1039/c3ra22686g)

Hiroko P. Indo, Ikuo Nakanishi, Kei Ohkubo, Hsiu Chuan Yen, Minako Nyui, Sushma Manda, Ken Ichiro Matsumoto, Kiyoshi Fukuhara, Kazunori Anzai, Nobuo Ikota, Hirofumi Matsui, Yukiko Minamiyama, Akira Nakajima, Hiroshi Ichikawa, Shunichi Fukuzumi, Toshihiko Ozawa, Chiaki Mukai, Hideyuki J. Majima

RSC Advances　Vol. 3　No. 48　2013/12/28　Research paper (scientific journal)

Photochemical Oxidation of a Manganese(III) Complex with Oxygen and Toluene Derivatives to Form a Manganese(V)-Oxo Complex

Jieun Jung, Kei Ohkubo, Katharine A. Prokop-Prigge, Heather M. Neu, David P. Goldberg, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 52　No. 23　p. 13594-13604　2013/12　Research paper (scientific journal)

Photocatalytic Monofluorination of Benzene by Fluoride via Photoinduced Electron Transfer with 3-Cyano-1-methylquinolinium

Kei Ohkubo, Atsushi Fujimoto, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 117　No. 41　p. 10719-10725　2013/10　Research paper (scientific journal)

Electron Transfer in a Supramolecular Complex of Zinc Chlorin Carboxylate Anion with Li+@C-60 Affording the Long-Lived Charge-Separated State

Yuki Kawashima, Kei Ohkubo, Mase Kentaro, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 117　No. 41　p. 21166-21177　2013/10　Research paper (scientific journal)

Small reorganization energies of photoinduced electron transfer between spherical fullerenes

Yuki Kawashima, Kei Ohkubo, Shunichi Fukuzumi

Journal of Physical Chemistry A　Vol. 117　No. 31　p. 6737-6743　2013/08/08　Research paper (scientific journal)

Photosynthetic Antenna-Reaction Center Mimicry with a Covalently Linked Monostyryl Boron-Dipyrromethene-Aza-Boron-Dipyrromethene-C-60 Triad

Wen-Jing Shi, Mohamed E. El-Khouly, Kei Ohkubo, Shunichi Fukuzumi, Dennis K. P. Ng

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 19　No. 34　p. 11332-11341　2013/08　Research paper (scientific journal)

eta(5)-Cyclopentadienyliron(II)-[14]Triphyrin(2.1.1) Sandwich Compounds: Synthesis, Characterization, and Stable Redox Interconversion

Zhaoli Xue, Daiki Kuzuhara, Shinya Ikeda, Yuka Sakakibara, Kei Ohkubo, Naoki Aratani, Tetsuo Okujima, Hidemitsu Uno, Shunichi Fukuzumi, Hiroko Yamada

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 52　No. 28　p. 7306-7309　2013/07　Research paper (scientific journal)

Porphyrins Fused with Strongly Electron-Donating 1,3-Dithiol-2-ylidene Moieties: Redox Control by Metal Cation Complexation and Anion Binding

Nathan L. Bill, Masatoshi Ishida, Steffen Bahring, Jong Min Lim, Sangsu Lee, Christina M. Davis, Vincent M. Lynch, Kent A. Nielsen, Jan O. Jeppesen, Kei Ohkubo, Shunichi Fukuzumi, Dongho Kim, Jonathan L. Sessler

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 29　p. 10852-10862　2013/07　Research paper (scientific journal)

Electrochemical Synthesis of Transparent, Amorphous, C60-Rich, Photoactive, and Low-Doped Film with an Interconnected Structure

Mao Li, Shinsuke Ishihara, Kei Ohkubo, Meiyong Liao, Qingmin Ji, Cheng Gu, Yuyu Pan, Xiangfen Jiang, Misaho Akada, Jonathan P. Hill, Takashi Nakanishi, Yuguang Ma, Yusuke Yamauchi, Shunichi Fukuzumi, Katsuhiko Ariga

SMALL　Vol. 9　No. 12　p. 2064-2068　2013/06　Research paper (scientific journal)

Excitation-Wavelength-Dependent, Ultrafast Photoinduced Electron Transfer in Bisferrocene/BF2-Chelated-Azadipyrromethene/Fullerene Tetrads

Venugopal Bandi, Mohamed E. El-Khouly, Kei Ohkubo, Vladimir N. Nesterov, Melvin E. Zandler, Shunichi Fukuzumi, Francis D'Souza

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 19　No. 22　p. 7221-7230　2013/05　Research paper (scientific journal)

Enhanced Catalytic Four-Electron Dioxygen (O-2) and Two-Electron Hydrogen Peroxide (H2O2) Reduction with a Copper(II) Complex Possessing a Pendant Ligand Pivalamido Group

Saya Kakuda, Ryan L. Peterson, Kei Ohkubo, Kenneth D. Karlin, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 17　p. 6513-6522　2013/05　Research paper (scientific journal)

Acetate Induced Enhancement of Photocatalytic Hydrogen Peroxide Production from Oxalic Acid and Dioxygen

Yusuke Yamada, Akifumi Nomura, Takamitsu Miyahigashi, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 117　No. 18　p. 3751-3760　2013/05　Research paper (scientific journal)

Helicity-selective photoreaction of single-walled carbon nanotubes with organosulfur compounds in the presence of oxygen

Yutaka Maeda, Junki Higo, Yuri Amagai, Jun Matsui, Kei Ohkubo, Yusuke Yoshigoe, Masahiro Hashimoto, Kazuhiro Eguchi, Michio Yamada, Tadashi Hasegawa, Yoshinori Sato, Jing Zhou, Jing Lu, Tokuji Miyashita, Shunichi Fukuzumi, Tatsuya Murakami, Kazuyuki Tohji, Shigeru Nagase, Takeshi Akasaka

Journal of the American Chemical Society　Vol. 135　No. 16　p. 6356-6362　2013/04/24　Research paper (scientific journal)

Comparison of in vivo and in vitro antioxidative parameters for eleven food factors

Hiroko P. Indo, Ikuo Nakanishi, Kei Ohkubo, Hsiu-Chuan Yen, Minako Nyui, Sushma Manda, Ken-Ichiro Matsumoto, Kiyoshi Fukuhara, Kazunori Anzai, Nobuo Ikota, Hirofumi Matsui, Yukiko Minamiyama, Akira Nakajima, Hiroshi Ichikawa, Shunichi Fukuzumi, Toshihiko Ozawa, Chiaki Mukai, Hideyuki J. Majima

RSC Advances　Vol. 3　No. 14　p. 4535-4538　2013/04/14　Research paper (scientific journal)

Visible-Light-Induced Oxygenation of Benzene by the Triplet Excited State of 2,3-Dichloro-5,6-dicyano-p-benzoquinone

Kei Ohkubo, Atsushi Fujimoto, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 14　p. 5368-5371　2013/04　Research paper (scientific journal)

Decorating single layer graphene oxide with donor-acceptor molecules in an electron transfer process

Sushanta K. Das, B. K. C. Chandra, Kei Ohkubo, Shunichi Fukuzumi, Francis D'Souza

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 245　2013/04

Decorating single layer graphene oxide with electron donor and acceptor molecules for the study of photoinduced electron transfer

Sushanta K. Das, Chandra B. Kc, Kei Ohkubo, Yusuke Yamada, Shunichi Fukuzumi, Francis D'Souza

Chemical Communications　Vol. 49　No. 20　p. 2013-2015　2013/03/11　Research paper (scientific journal)

Remarkable Enhancement of Photocatalytic Hydrogen Evolution Efficiency Utilizing An Internal Cavity of Supramolecular Porphyrin Hexagonal Nanocylinders Under Visible-Light Irradiation

Taku Hasobe, Hayato Sakai, Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 117　No. 9　p. 4441-4449　2013/03　Research paper (scientific journal)

Acid-Induced Mechanism Change and Overpotential Decrease in Dioxygen Reduction Catalysis with a Dinuclear Copper Complex

Dipanwita Das, Yong-Min Lee, Kei Ohkubo, Wonwoo Nam, Kenneth D. Karlin, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 10　p. 4018-4026　2013/03　Research paper (scientific journal)

Efficient two-electron reduction of dioxygen to hydrogen peroxide with one-electron reductants with a small overpotential catalyzed by a cobalt chlorin complex

Kentaro Mase, Kei Ohkubo, Shunichi Fukuzumi

Journal of the American Chemical Society　Vol. 135　No. 7　p. 2800-2808　2013/02/20　Research paper (scientific journal)

Temperature-Independent Catalytic Two-Electron Reduction of Dioxygen by Ferrocenes with a Copper(II) Tris[2-(2-pyridyl)ethyl]amine Catalyst in the Presence of Perchloric Acid

Dipanwita Das, Yong-Min Lee, Kei Ohkubo, Wonwoo Nam, Kenneth D. Karlin, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 7　p. 2825-2834　2013/02　Research paper (scientific journal)

COD ID: 4117691

Hoshino Manabu, Uekusa Hidehiro, Tomita Ayana, Koshihara Shin-ya, Sato Tokushi, Nozawa Shunsuke, Adachi Shin-ichi, Ohkubo Kei, Kotani Hiroaki, Fukuzumi Shunichi

2013

The long-lived electron transfer state of the 2-phenyl-4-(1-naphthyl)quinolinium ion incorporated into nanosized mesoporous silica-alumina acting as a robust photocatalyst in water

Yusuke Yamada, Akifumi Nomura, Kei Ohkubo, Tomoyoshi Suenobu, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 49　No. 45　p. 5132-5134　2013　Research paper (scientific journal)

Tetrathiafulvalene-annulated [28]hexaphyrin(1.1.1.1.1.1): a multi-electron donor system subject to conformational control

Atanu Jana, Masatoshi Ishida, Kevin Cho, Sudip Kumar Ghosh, Kyuju Kwak, Kei Ohkubo, Young Mo Sung, Christina M. Davis, Vincent M. Lynch, Dongil Lee, Shunichi Fukuzumi, Dongho Kim, Jonathan L. Sessler

CHEMICAL COMMUNICATIONS　Vol. 49　No. 79　p. 8937-8939　2013　Research paper (scientific journal)

Submillisecond-lived photoinduced charge separation in inclusion complexes composed of Li+@C-60 and cyclic porphyrin dimers

Takuya Kamimura, Kei Ohkubo, Yuki Kawashima, Hirofumi Nobukuni, Yoshinori Naruta, Fumito Tani, Shunichi Fukuzumi

CHEMICAL SCIENCE　Vol. 4　No. 4　p. 1451-1461　2013　Research paper (scientific journal)

Selective photocatalytic reactions with organic photocatalysts

Shunichi Fukuzumi, Kei Ohkubo

CHEMICAL SCIENCE　Vol. 4　No. 2　p. 561-574　2013　Research paper (scientific journal)

Protonation-coupled redox reactions in planar antiaromatic meso-pentafluorophenyl-substituted o-phenylene-bridged annulated rosarins

Masatoshi Ishida, Soo-Jin Kim, Christian Preihs, Kei Ohkubo, Jong Min Lim, Byung Sun Lee, Jung Su Park, Vincent M. Lynch, Vladimir V. Roznyatovskiy, Tridib Sarma, Pradeepta K. Panda, Chang-Hee Lee, Shunichi Fukuzumi, Dongho Kim, Jonathan L. Sessler

NATURE CHEMISTRY　Vol. 5　No. 1　p. 15-20　2013/01　Research paper (scientific journal)

Oxygenation and chlorination of aromatic hydrocarbons with hydrochloric acid photosensitized by 9-mesityl-10-methylacridinium under visible light irradiation

Kei Ohkubo, Kentaro Mizushima, Shunichi Fukuzumi

Research on Chemical Intermediates　Vol. 39　No. 1　p. 205-220　2013/01　Research paper (scientific journal)

Long-lived photoinduced charge separation for solar cell applications in supramolecular complexes of multi-metalloporphyrins and fullerenes

Shunichi Fukuzumi, Kei Ohkubo

DALTON TRANSACTIONS　Vol. 42　No. 45　p. 15846-15858　2013　Research paper (scientific journal)

Ionic conductivity of [Li+@C-60](PF6-) in organic solvents and its electrochemical reduction to Li+@C-60(center dot-)

Hiroshi Ueno, Ken Kokubo, Yuji Nakamura, Kei Ohkubo, Naohiko Ikuma, Hiroshi Moriyama, Shunichi Fukuzumi, Takumi Oshima

CHEMICAL COMMUNICATIONS　Vol. 49　No. 67　p. 7376-7378　2013　Research paper (scientific journal)

Enhanced photoelectrochemical performance of composite photovoltaic cells of Li+@C-60-sulphonated porphyrin supramolecular nanoclusters

Kei Ohkubo, Yuki Kawashima, Hayato Sakai, Taku Hasobe, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 49　No. 40　p. 4474-4476　2013　Research paper (scientific journal)

Copper complexes of the non-innocent beta-diketiminate ligand containing phenol groups

June Takaichi, Kei Ohkubo, Hideki Sugimoto, Motohiro Nakano, Daisuke Usa, Hiroaki Maekawa, Nobutaka Fujieda, Nagatoshi Nishiwaki, Shu Seki, Shunichi Fukuzumi, Shinobu Itoh

DALTON TRANSACTIONS　Vol. 42　No. 7　p. 2438-2444　2013　Research paper (scientific journal)

A broad-band capturing and emitting molecular triad: synthesis and photochemistry

Venugopal Bandi, Kei Ohkubo, Shunichi Fukuzumi, Francis D'Souza

CHEMICAL COMMUNICATIONS　Vol. 49　No. 28　p. 2867-2869　2013　Research paper (scientific journal)

A 'two-point' bound zinc porphyrin-zinc phthalocyanine-fullerene supramolecular triad for sequential energy and electron transfer

Chandra B. Kc, Kei Ohkubo, Paul A. Karr, Shunichi Fukuzumi, Francis D'Souza

CHEMICAL COMMUNICATIONS　Vol. 49　No. 69　p. 7614-7616　2013　Research paper (scientific journal)

Synthesis, Photophysical and Electrochemistry of Near-IR Absorbing Bacteriochlorins Related to Bacteriochlorophyll a

Andrei Kozyrev, Manivannan Ethirajan, Ping Chen, Kei Ohkubo, Byron C. Robinson, Kathleen M. Barkigia, Shunichi Fukuzumi, Karl M. Kadish, Ravindra K. Pandey

JOURNAL OF ORGANIC CHEMISTRY　Vol. 77　No. 22　p. 10260-10271　2012/11　Research paper (scientific journal)

Radical-Scavenging Reactions of Ascorbic Acid and Its Analogue in the Presence of a Redox-Inactive Metal Ion

Ikuo Nakanishi, Keiko Inami, Shogo Nomura, Kei Ohkubo, Tomonori Kawashima, Masataka Mochizuki, Shunichi Fukuzumi, Toshihiko Ozawa, Ken-ichiro Alatsumoto

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 53　p. S151-S151　2012/11

Observation of Structural Change upon Photoinduced Electron Transfer of 9-Mesityl-10-methylacridinium Ion by Pump-Probe X-Ray Crystal Structure Analysis

Manabu Hoshino, Hidehiro Uekusa, Ayana Tomita, Shin-ya Koshihara, Tokushi Sato, Shunsuke Nozawa, Shin-ichi Adachi, Kei Ohkubo, Hiroaki Kotani, Shunichi Fukuzumi

Photon Factory Activity Report 2011 PART A Highlights and Facility Report　Vol. 29　p. 38-39　2012/10　Research paper (bulletin of university, research institution)

Electroreduction and Acid-Base Properties of Dipyrrolylquinoxalines

Zhen Fu, Min Zhang, Weihua Zhu, Elizabeth Karnas, Kentaro Mase, Kei Ohkubo, Jonathan L. Sessler, Shunichi Fukuzumi, Karl M. Kadish

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 116　No. 41　p. 10063-10073　2012/10　Research paper (scientific journal)

Copper(I)-Dioxygen Reactivity in a Sterically Demanding Tripodal Tetradentate tren Ligand: Formation and Reactivity of a Mononuclear Copper(II) End-On Superoxo Complex

Yuki Kobayashi, Kei Ohkubo, Takashi Nomura, Minoru Kubo, Nobutaka Fujieda, Hideki Sugimoto, Shunichi Fukuzumi, Kei Goto, Takashi Ogura, Shinobu Itoh

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY　No. 29　p. 4574-4578　2012/10　Research paper (scientific journal)

Zinc Phthalocyanine-Graphene Hybrid Material for Energy Conversion: Synthesis, Characterization, Photophysics, and Photoelectrochemical Cell Preparation

Nikolaos Karousis, Javier Ortiz, Kei Ohkubo, Taku Hasobe, Shunichi Fukuzumi, Angela Sastre-Santos, Nikos Tagmatarchis

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 116　No. 38　p. 20564-20573　2012/09　Research paper (scientific journal)

Involvement of electron transfer in the radical-scavenging reaction of melatonin in a protic medium

I. Nakanishi, M. Kamibayashi, K. Ohkubo, A. K. M. R. K. Zoardar, T. Kawashima, K. Manda, K-I. Matsumoto, S. Fukuzumi, T. Ozawa, K. Anzai

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 53　p. S146-S147　2012/09

Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity

Shunichi Fukuzumi, Kaoru Doi, Akinori Itoh, Tomoyoshi Suenobu, Kei Ohkubo, Yusuke Yamada, Kenneth D. Karlin

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA　Vol. 109　No. 39　p. 15572-15577　2012/09　Research paper (scientific journal)

Enhanced Photoinduced Electron-Transfer Reduction of Li+@C-60 in Comparison with C-60

Yuki Kawashima, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 116　No. 36　p. 8942-8948　2012/09　Research paper (scientific journal)

Active Site Models for the Cu-A Site of Peptidylglycine alpha-Hydroxylating Monooxygenase and Dopamine beta-Monooxygenase

Atsushi Kunishita, Mehmed Z. Ertem, Yuri Okubo, Tetsuro Tano, Hideki Sugimoto, Kei Ohkubo, Nobutaka Fujieda, Shunichi Fukuzumi, Christopher J. Cramer, Shinobu Itoh

INORGANIC CHEMISTRY　Vol. 51　No. 17　p. 9465-9480　2012/09　Research paper (scientific journal)

Pump-Probe単結晶X線構造解析による光誘起電子移動した有機光触媒の観察

星野学, 植草秀裕, 富田文菜, 腰原伸也, 佐藤篤志, 野澤俊介, 足立伸一, 大久保敬, 小谷弘明, 福住俊一

PF NEWS　2012/08　Research paper (bulletin of university, research institution)

Kinetics and Mechanism for the Scavenging Reaction of the 2,2-Diphenyl-1-picrylhydrazyl Radical by Synthetic Artepillin C Analogues

Tomonori Kawashima, Sushma Manda, Yoshihiro Uto, Kei Ohkubo, Hitoshi Hori, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai, Ikuo Nakanishi

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 85　No. 8　p. 877-883　2012/08　Research paper (scientific journal)

Fluorescent Zinc Sensor with Minimized Proton-Induced Interferences: Photophysical Mechanism for Fluorescence Turn-On Response and Detection of Endogenous Free Zinc Ions

Ji Eon Kwon, Sumin Lee, Youngmin You, Kyung-Hwa Baek, Kei Ohkubo, Jaeheung Cho, Shunichi Fukuzumi, Injae Shin, Soo Young Park, Wonwoo Nam

INORGANIC CHEMISTRY　Vol. 51　No. 16　p. 8760-8774　2012/08　Research paper (scientific journal)

Chlorine atom substitution influences radical scavenging activity of 6-chromanol.

Keiko Inami, Yuko Iizuka, Miyuki Furukawa, Ikuo Nakanishi, Kei Ohkubo, Kiyoshi Fukuhara, Shunichi Fukuzumi, Masataka Mochizuki

Bioorganic & medicinal chemistry　Vol. 20　No. 13　p. 4049-55　2012/07/01　Research paper (scientific journal)

ブラジル産プロポリスに由来するアルテピリンCおよびその誘導体のフリーラジカル消去活性

中西 郁夫, 川島 知憲, マンダ・スシュマ, 宇都 義浩, 大久保 敬, 堀 均, 松本 謙一郎, 福原 潔, 福住 俊一, 安西 和紀, 小澤 俊彦

日本抗加齢医学会総会プログラム・抄録集　Vol. 12回　p. 225-225　2012/06

Photoinduced Energy and Electron Transfer in Phenylethynyl-Bridged Zinc Porphyrin-Oligothienylenevinylene-C60 Ensembles

Maxence Urbani, Kei Ohkubo, D. M. Shafiqul Islam, Shunichi Fukuzumi, Fernando Langa

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 18　No. 24　p. 7473-7485　2012/06　Research paper (scientific journal)

Catalytic Four-Electron Reduction of O-2 via Rate-Determining Proton-Coupled Electron Transfer to a Dinuclear Cobalt-mu-1,2-peroxo Complex

Shunichi Fukuzumi, Sukanta Mandal, Kentaro Mase, Kei Ohkubo, Hyejin Park, Jordi Benet-Buchholz, Wonwoo Nam, Antoni Llobet

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 134　No. 24　p. 9906-9909　2012/06　Research paper (scientific journal)

Mechanism and Fluorescence Application of Electrochromism in Photochromic Dithienylcyclopentene

Sumin Lee, Youngmin You, Kei Ohkubo, Shunichi Fukuzumi, Wonwoo Nam

ORGANIC LETTERS　Vol. 14　No. 9　p. 2238-2241　2012/05　Research paper (scientific journal)

Decoupling the artificial special pair to slow down the rate of singlet energy transfer

Pierre D. Harvey, Adam Langlois, Mikhail Filatov, Daniel Fortin, Kei Ohkubo, Shunichi Fukuzumi, Roger Guilard

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 16　No. 5-6　p. 685-694　2012/05　Research paper (scientific journal)

Utilization of Photoinduced Charge-Separated State of Donor-Acceptor-Linked Molecules for Regulation of Cell Membrane Potential and Ion Transport

Tomohiro Numata, Tatsuya Murakami, Fumiaki Kawashima, Nobuhiro Morone, John E. Heuser, Yuta Takano, Kei Ohkubo, Shunichi Fukuzumi, Yasuo Mori, Hiroshi Imahori

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 134　No. 14　p. 6092-6095　2012/04　Research paper (scientific journal)

Synthesis and Photodynamics of Fluorescent Blue BODIPY-Porphyrin Tweezers Linked by Triazole Rings

Antoine Eggenspiller, Atsuro Takai, Mohamed E. El-Khouly, Kei Ohkubo, Claude P. Gros, Claire Bernhard, Christine Goze, Franck Denat, Jean-Michel Barbe, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 116　No. 15　p. 3889-3898　2012/04　Research paper (scientific journal)

Selective Oxygenation by Electron Transfer

Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 70　No. 4　p. 343-353　2012/04　Research paper (scientific journal)

Factors That Control Catalytic Two- versus Four-Electron Reduction of Dioxygen by Copper Complexes

Shunichi Fukuzumi, Laleh Tahsini, Yong-Min Lee, Kei Ohkubo, Wonwoo Nam, Kenneth D. Karlin

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 134　No. 16　p. 7025-7035　2012/04　Research paper (scientific journal)

Assemblies of artificial photosynthetic reaction centres

Shunichi Fukuzumi, Kei Ohkubo

Journal of Materials Chemistry　Vol. 22　No. 11　p. 4575-4587　2012/03/21　Research paper (scientific journal)

Photocatalytic hydrogen evolution with Ni nanoparticles by using 2-phenyl-4-(1-naphthyl)quinolinium ion as a photocatalyst

Yusuke Yamada, Takamitsu Miyahigashi, Hiroaki Kotani, Kei Ohkubo, Shunichi Fukuzumi

ENERGY & ENVIRONMENTAL SCIENCE　Vol. 5　No. 3　p. 6111-6118　2012/03　Research paper (scientific journal)

Photocatalytic alkoxylation of benzene with 3-cyano-1-methylquinolinium ion

Kei Ohkubo, Takaki Kobayashi, Shunichi Fukuzumi

OPTICS EXPRESS　Vol. 20　No. 6　p. A360-A365　2012/03　Research paper (scientific journal)

Determination of the Structural Features of a Long-Lived Electron-Transfer State of 9-Mesityl-10-methylacridinium Ion

Manabu Hoshino, Hidehiro Uekusa, Ayana Tomita, Shin-ya Koshihara, Tokushi Sato, Shunsuke Nozawa, Shin-ichi Adachi, Kei Ohkubo, Hiroaki Kotani, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 134　No. 10　p. 4569-4572　2012/03　Research paper (scientific journal)

Erratum: "ON-OFF" switching of europiumcomplex luminescence coupled with a ligand redox process (Chemical Communications (2012) 48 (4082-4084) (DOI: 10.1039/c2cc31078c))

Yano M, Matsuhira K, Tatsumi M, Kashiwagi Y, Nakamoto M, Oyama M, Ohkubo K, Fukuzumi S, Misaki H, Tsukube H

Chemical Communications　Vol. 48　No. 100　2012　Research paper (scientific journal)

CCDC 818662: Experimental Crystal Structure Determination

Hoshino M, Uekusa H, Tomita A, Koshihara S, Sato T, Nozawa S, Adachi S, Ohkubo K, Kotani H, Fukuzumi S

2012

Elektronische Eigenschaften trifluormethylierter Corannulene

Bernd M. Schmidt, Shu Seki, Berit Topolinski, Kei Ohkubo, Shunichi Fukuzumi, Hidehiro Sakurai, Dieter Lentz

Angewandte Chemie　Vol. 124　No. 45　p. 11548-11551　2012

Ultrafast charge separation in supramolecular tetrapyrrole-graphene hybrids

Chandra K. C. Bikram, Sushanta K. Das, Kei Ohkubo, Shunichi Fukuzumi, Francis D'Souza

CHEMICAL COMMUNICATIONS　Vol. 48　No. 97　p. 11859-11861　2012　Research paper (scientific journal)

The high stability of intermediate radicals enhances the radical-scavenging activity of aminochromanols

Keiko Inami, Ikuo Nakanishi, Mine Morita, Miyuki Furukawa, Kei Ohkubo, Shunichi Fukuzumi, Masataka Mochizuki

RSC ADVANCES　Vol. 2　No. 33　p. 12714-12717　2012　Research paper (scientific journal)

Supramolecular electron transfer by anion binding

Shunichi Fukuzumi, Kei Ohkubo, Francis D'Souza, Jonathan L. Sessler

CHEMICAL COMMUNICATIONS　Vol. 48　No. 79　p. 9801-9815　2012　Research paper (scientific journal)

Strong supramolecular binding of Li+ @C-60 with sulfonated meso-tetraphenylporphyrins and long-lived photoinduced charge separation

Kei Ohkubo, Yuki Kawashima, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 48　No. 36　p. 4314-4316　2012　Research paper (scientific journal)

Remarkable enhancement of catalytic activity of a 2: 1 complex between a non-planar Mo(v)-porphyrin and a ruthenium-substituted Keggin-type heteropolyoxometalate in catalytic oxidation of benzyl alcohols

Atsutoshi Yokoyama, Kei Ohkubo, Tomoya Ishizuka, Takahiko Kojima, Shunichi Fukuzumi

DALTON TRANSACTIONS　Vol. 41　No. 33　p. 10006-10013　2012　Research paper (scientific journal)

Regulation of Redox Potential of a Pterin Derivative Bound to a Ruthenium(II) Complex by Intermolecular Hydrogen Bonding with Nucleobases

Yuji Inui, Soushi Miyazaki, Kei Ohkubo, Shunichi Fukuzumi, Takahiko Kojima

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 51　No. 19　p. 4623-4627　2012　Research paper (scientific journal)

Rational design of a phthalocyanine-perylenediimide dyad with a long-lived charge-separated state

Vicente M. Blas-Ferrando, Javier Ortiz, Latifa Bouissane, Kei Ohkubo, Shunichi Fukuzumi, Fernando Fernandez-Lazaroa, Angela Sastre-Santos

CHEMICAL COMMUNICATIONS　Vol. 48　No. 50　p. 6241-6243　2012　Research paper (scientific journal)

Photoinduced electron transfer in supramolecular complexes of a pi-extended viologen with porphyrin monomer and dimer

Shunichi Fukuzumi, Ichiro Amasaki, Kei Ohkubo, Claude P. Gros, Roger Guilard, Jean-Michel Barbe

RSC ADVANCES　Vol. 2　No. 9　p. 3741-3747　2012　Research paper (scientific journal)

Photoelectrocatalysis to Improve Cycloreversion Quantum Yields of Photochromic Dithienylethene Compounds

Sumin Lee, Youngmin You, Kei Ohkubo, Shunichi Fukuzumi, Wonwoo Nam

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 51　No. 52　p. 13154-13158　2012　Research paper (scientific journal)

Photochemical properties of a myoglobin-CdTe quantum dot conjugate

Akira Onoda, Tomoki Himiyama, Kei Ohkubo, Shunichi Fukuzumi, Takashi Hayashi

CHEMICAL COMMUNICATIONS　Vol. 48　No. 65　p. 8054-8056　2012　Research paper (scientific journal)

Photocatalytic hydrogen evolution from carbon-neutral oxalate with 2-phenyl-4-(1-naphthyl)quinolinium ion and metal nanoparticles

Yusuke Yamada, Takamitsu Miyahigashi, Kei Ohkubo, Shunichi Fukuzumi

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 14　No. 30　p. 10564-10571　2012　Research paper (scientific journal)

Mechanisms of metal ion-coupled electron transfer

Shunichi Fukuzumi, Kei Ohkubo, Yuma Morimoto

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 14　No. 24　p. 8472-8484　2012　Research paper (scientific journal)

Long-lived long-distance photochemically induced spin-polarized charge separation in beta,beta &apos;-pyrrolic fused ferrocene-porphyrin-fullerene systems

Sai-Ho Lee, Allan G. Larsen, Kei Ohkubo, Zheng-Li Cai, Jeffrey R. Reimers, Shunichi Fukuzumi, Maxwell J. Crossley

CHEMICAL SCIENCE　Vol. 3　No. 1　p. 257-269　2012　Research paper (scientific journal)

Improvement of durability of an organic photocatalyst in p-xylene oxygenation by addition of a Cu(II) complex

Yusuke Yamada, Kazuki Maeda, Kei Ohkubo, Kenneth D. Karlin, Shunichi Fukuzumi

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 14　No. 27　p. 9654-9659　2012　Research paper (scientific journal)

Formation of a long-lived electron-transfer state of a naphthalene-quinolinium ion dyad and the pi-dimer radical cation

Hiroaki Kotani, Kei Ohkubo, Shunichi Fukuzumi

FARADAY DISCUSSIONS　Vol. 155　p. 89-102　2012　Research paper (scientific journal)

Electronic Properties of Trifluoromethylated Corannulenes

Bernd M. Schmidt, Shu Seki, Berit Topolinski, Kei Ohkubo, Shunichi Fukuzumi, Hidehiro Sakurai, Dieter Lentz

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 51　No. 45　p. 11385-11388　2012　Research paper (scientific journal)

Assemblies of artificial photosynthetic reaction centres

Shunichi Fukuzumi, Kei Ohkubo

JOURNAL OF MATERIALS CHEMISTRY　Vol. 22　No. 11　p. 4575-4587　2012　Research paper (scientific journal)

"ON-OFF" switching of europium complex luminescence coupled with a ligand redox process

Masafumi Yano, Keisuke Matsuhira, Masakazu Tatsumi, Yukiyasu Kashiwagi, Masami Nakamoto, Munetaka Oyama, Kei Ohkubo, Shunich Fukuzumi, Hitomi Misaki, Hiroshi Tsukube

CHEMICAL COMMUNICATIONS　Vol. 48　No. 34　p. 4082-4084　2012　Research paper (scientific journal)

"ON-OFF" switching of europium complex luminescence coupled with a ligand redox process

Masafumi Yano, Keisuke Matsuhira, Masakazu Tatsumi, Yukiyasu Kashiwagi, Masami Nakamoto, Munetaka Oyama, Kei Ohkubo, Shunich Fukuzumi, Hitomi Misaki, Hiroshi Tsukube

CHEMICAL COMMUNICATIONS　Vol. 48　No. 34　p. 4082-4084　2012　Research paper (scientific journal)

"ON-OFF" switching of europium complex luminescence coupled with a ligand redox process

Masafumi Yano, Keisuke Matsuhira, Masakazu Tatsumi, Yukiyasu Kashiwagi, Masami Nakamoto, Munetaka Oyama, Kei Ohkubo, Shunich Fukuzumi, Hitomi Misaki, Hiroshi Tsukube

CHEMICAL COMMUNICATIONS　Vol. 48　No. 34　p. 4082-4084　2012　Research paper (scientific journal)

Synthesis, Photophysical, Electrochemical, Tumor-Imaging, and Phototherapeutic Properties of Purpurinimide-N-substituted Cyanine Dyes Joined with Variable Lengths of Linkers

Michael P. A. Williams, Manivannan Ethirajan, Kei Ohkubo, Ping Chen, Paula Pera, Janet Morgan, William H. White, Masayuki Shibata, Shunichi Fukuzumi, Karl M. Kadish, Ravindra K. Pandey

BIOCONJUGATE CHEMISTRY　Vol. 22　No. 11　p. 2283-2295　2011/11　Research paper (scientific journal)

Synthesis, Photophysical, Electrochemical, Tumor-Imaging, and Phototherapeutic Properties of Purpurinimide-N-substituted Cyanine Dyes Joined with Variable Lengths of Linkers

Michael P. A. Williams, Manivannan Ethirajan, Kei Ohkubo, Ping Chen, Paula Pera, Janet Morgan, William H. White, Masayuki Shibata, Shunichi Fukuzumi, Karl M. Kadish, Ravindra K. Pandey

BIOCONJUGATE CHEMISTRY　Vol. 22　No. 11　p. 2283-2295　2011/11　Research paper (scientific journal)

Supramolecular Zinc Phthalocyanine-Imidazolyl Perylenediimide Dyad and Triad: Synthesis, Complexation, and Photophysical Studies

F. Javier Cespedes-Guirao, Kei Ohkubo, Shunichi Fukuzumi, Fernando Fernandez-Lazaro, Angela Sastre-Santos

CHEMISTRY-AN ASIAN JOURNAL　Vol. 6　No. 11　p. 3110-3121　2011/11　Research paper (scientific journal)

Radica-Scavenging Activity of 6-Chromanol Derivatives with Various Substituents

Ikuo Nakanishi, Keiko Inami, Kei Ohkubo, Tomonori Kawashima, Kiyoshi Fukuhara, Shunichi Fukuzumi, Kazunori Anzai, Toshihiko Ozawa, Masataka Mochizuki, Ken-ichiro Matsumoto

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 51　p. S93-S93　2011/11

Photochemical Activation of Ruthenium(II)-Pyridylamine Complexes Having a Pyridine-N-Oxide Pendant toward Oxygenation of Organic Substrates

Takahiko Kojima, Kazuya Nakayama, Miyuki Sakaguchi, Takashi Ogura, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 44　p. 17901-17911　2011/11　Research paper (scientific journal)

Phosphorescent Sensor for Biological Mobile Zinc

Youngmin You, Sumin Lee, Taehee Kim, Kei Ohkubo, Weon-Sik Chae, Shunichi Fukuzumi, Gil-Ja Jhon, Wonwoo Nam, Stephen J. Lippard

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 45　p. 18328-18342　2011/11　Research paper (scientific journal)

Multiple photosynthetic reaction centers composed of supramolecular assemblies of a zinc porphyrin dendrimer with pyridylnaphthalenediimide

Shunichi Fukuzumi, Kei Ohkubo, Kenji Saito, Yukiyasu Kashiwagi, Tony Khoury, Maxwell J. Crossley

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 15　No. 11-12　p. 1292-1298　2011/11　Research paper (scientific journal)

Reversible Photoredox Switching of Porphyrin-Bridged Bis-2,6-di-tert-butylphenols

Shinsuke Ishihara, Jonathan P. Hill, Atsuomi Shundo, Gary J. Richards, Jan Labuta, Kei Ohkubo, Shunichi Fukuzumi, Akira Sato, Mark R. J. Elsegood, Simon J. Teat, Katsuhiko Ariga

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 40　p. 16119-16126　2011/10　Research paper (scientific journal)

Photocatalytic Hydrogen Evolution under Highly Basic Conditions by Using Ru Nanoparticles and 2-Phenyl-4-(1-naphthyl)quinolinium Ion

Yusuke Yamada, Takamitsu Miyahigashi, Hiroaki Kotani, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 40　p. 16136-16145　2011/10　Research paper (scientific journal)

Ion-Controlled On-Off Switch of Electron Transfer from Tetrathiafulvalene Calix[4]pyrroles to Li+@C-60

Shunichi Fukuzumi, Kei Ohkubo, Yuki Kawashima, Dong Sub Kim, Jung Su Park, Atanu Jana, Vincent M. Lynch, Dongho Kim, Jonathan L. Sessler

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 40　p. 15938-15941　2011/10　Research paper (scientific journal)

Synthesis and Photophysics of Silicon Phthalocyanine-Perylenebisimide Triads Connected through Rigid and Flexible Bridges

F. Javier Cespedes-Guirao, Luis Martin-Gomis, Kei Ohkubo, Shunichi Fukuzumi, Fernando Fernandez-Lazaro, Angela Sastre-Santos

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 17　No. 33　p. 9153-9163　2011/08　Research paper (scientific journal)

Catalytic mechanisms of hydrogen evolution with homogeneous and heterogeneous catalysts

Shunichi Fukuzumi, Yusuke Yamada, Tomoyoshi Suenobu, Kei Ohkubo, Hiroaki Kotani

ENERGY & ENVIRONMENTAL SCIENCE　Vol. 4　No. 8　p. 2754-2766　2011/08　Research paper (scientific journal)

An Efficient Fluorescence Sensor for Superoxide with an Acridinium Ion-Linked Porphyrin Triad

Hiroaki Kotani, Kei Ohkubo, Maxwell J. Crossley, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 29　p. 11092-11095　2011/07　Research paper (scientific journal)

Disproportionation of Dipyrrolylquinoxaline Radical Anions via the Internal Protons of the Pyrrole Moieties

Shunichi Fukuzumi, Kentaro Mase, Kei Ohkubo, Zhen Fu, Elizabeth Karnas, Jonathan L. Sessler, Karl M. Kadish

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 19　p. 7284-7287　2011/05　Research paper (scientific journal)

抗酸化活性を示すメラトニンのフリーラジカル消去機構

中西 郁夫, ゾーダー・カビル, 川島 知憲, 上林 將人, 松本 謙一郎, 大久保 敬, 福住 俊一, 安西 和紀, 小澤 俊彦

日本抗加齢医学会総会プログラム・抄録集　Vol. 11回　p. 313-313　2011/04

Remarkable Regioselective Position-10 Bromination of Bacteriopyropheophorbide-a and Ring-B Reduced Pyropheophorbide-a

Manivannan Ethirajan, Penny Joshi, White H. William, Kei Ohkubo, Shunichi Fukuzumi, Ravindra K. Pandey

ORGANIC LETTERS　Vol. 13　No. 8　p. 1956-1959　2011/04　Research paper (scientific journal)

Annulation of Tetrathiafulvalene to the Bay Region of Perylenediimide: Fast Electron-Transfer Processes in Polar and Nonpolar Solvents

Mohamed E. El-Khouly, Michael Jaggi, Belinda Schmid, Carmen Blum, Shi-Xia Liu, Silvio Decurtins, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 115　No. 16　p. 8325-8334　2011/04　Research paper (scientific journal)

Photochemical Charge Separation in Closely Positioned Donor-Boron Dipyrrin-Fullerene Triads

Channa A. Wijesinghe, Mohamed E. El-Khouly, Navaneetha K. Subbaiyan, Mustafa Supur, Melvin E. Zandler, Kei Ohkubo, Shunichi Fukuzumi, Francis D'Souza

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 17　No. 11　p. 3147-3156　2011/03　Research paper (scientific journal)

Size- and Shape-Dependent Activity of Metal Nanoparticles as Hydrogen-Evolution Catalysts: Mechanistic Insights into Photocatalytic Hydrogen Evolution

Hiroaki Kotani, Ryo Hanazaki, Kei Ohkubo, Yusuke Yamada, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 17　No. 9　p. 2777-2785　2011/02　Research paper (scientific journal)

Post-Translational His-Cys Cross-Linkage Formation in Tyrosinase Induced by Copper(II)-Peroxo Species

Nobutaka Fujieda, Takuya Ikeda, Michiaki Murata, Sachiko Yanagisawa, Shigetoshi Aono, Kei Ohkubo, Satoshi Nagao, Takashi Ogura, Shun Hirota, Shunichi Fukuzumi, Yukihiro Nakamura, Yoji Hata, Shinobu Itoh

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 5　p. 1180-1183　2011/02　Research paper (scientific journal)

Formation of a Hybrid Compound Composed of a Saddle-Distorted Tin(IV)-Porphyrin and a Keggin-Type Heteropolyoxometalate To Undergo Intramolecular Photoinduced Electron Transfer

Atsutoshi Yokoyama, Takahiko Kojima, Kei Ohkubo, Motoo Shiro, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 115　No. 6　p. 986-997　2011/02　Research paper (scientific journal)

Stepwise vs. concerted pathways in scandium ion-coupled electron transfer from superoxide ion to p-benzoquinone derivatives

Tomonori Kawashima, Kei Ohkubo, Shunichi Fukuzumi

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 13　No. 8　p. 3344-3352　2011　Research paper (scientific journal)

Selective photocatalytic aerobic bromination with hydrogen bromide via an electron-transfer state of 9-mesityl-10-methylacridinium ion

Kei Ohkubo, Kentaro Mizushima, Ryosuke Iwata, Shunichi Fukuzumi

CHEMICAL SCIENCE　Vol. 2　No. 4　p. 715-722　2011　Research paper (scientific journal)

Multiple photosynthetic reaction centres using zinc porphyrinic oligopeptide-fulleropyrrolidine supramolecular complexes

Shunichi Fukuzumi, Kenji Saito, Kei Ohkubo, Vincent Troiani, Hongjin Qiu, Suresh Gadde, Francis D'Souza, Nathalie Solladie

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 13　No. 38　p. 17019-17022　2011　Research paper (scientific journal)

Multiple photosynthetic reaction centres composed of supramolecular assemblies of zinc porphyrin dendrimers with a fullerene acceptor

Shunichi Fukuzumi, Kenji Saito, Kei Ohkubo, Tony Khoury, Yukiyasu Kashiwagi, Mark A. Absalom, Suresh Gadde, Francis D&apos;Souza, Yasuyuki Araki, Osamu Ito, Maxwell J. Crossley

CHEMICAL COMMUNICATIONS　Vol. 47　No. 28　p. 7980-7982　2011　Research paper (scientific journal)

Metal-free oxygenation of cyclohexane with oxygen catalyzed by 9-mesityl-10-methylacridinium and hydrogen chloride under visible light irradiation

Kei Ohkubo, Atsushi Fujimoto, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 47　No. 30　p. 8515-8517　2011　Research paper (scientific journal)

Direct Oxygenation of Benzene to Phenol Using Quinolinium Ions as Homogeneous Photocatalysts

Kei Ohkubo, Takaki Kobayashi, Shunichi Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 50　No. 37　p. 8652-8655　2011　Research paper (scientific journal)

C-60 dimers connected through pleiadene bridges: fullerenes talking to each other

Angela Sastre-Santos, Concepcion Parejo, Luis Martin-Gomis, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi

JOURNAL OF MATERIALS CHEMISTRY　Vol. 21　No. 5　p. 1509-1515　2011　Research paper (scientific journal)

Crystal Structures and Solution Properties of Discrete Complexes Composed of Saddle-Distorted Molybdenum(V)-Dodecaphenylporphyrins and Keggin-Type Heteropolyoxometalates Linked by Direct Coordination

Atsutoshi Yokoyama, Takahiko Kojima, Kei Ohkubo, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 49　No. 23　p. 11190-11198　2010/12　Research paper (scientific journal)

Synthesis, Crystal Structure, and Photodynamics of pi-Expanded Porphyrin-Fullerene Dyads Synthesized by Diels-Alder Reaction

Hiroko Yamada, Kei Ohkubo, Daiki Kuzuhara, Tetsuro Takahashi, Atula S. D. Sandanayaka, Tetsuo Okujima, Keishi Ohara, Osamu Ito, Hidemitsu Uno, Noboru Ono, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 114　No. 45　p. 14717-14728　2010/11　Research paper (scientific journal)

Stopped-Flow Kinetic Analysis of the Interaction of Cyclo[8]pyrrole with Anions

Elizabeth Karnas, Sung Kuk Kim, Kenneth A. Johnson, Jonathan L. Sessler, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 46　p. 16617-16622　2010/11　Research paper (scientific journal)

Ion-Mediated Electron Transfer in a Supramolecular Donor-Acceptor Ensemble

Jung Su Park, Elizabeth Karnas, Kei Ohkubo, Ping Chen, Karl M. Kadish, Shunichi Fukuzumi, Christopher W. Bielawski, Todd W. Hudnall, Vincent M. Lynch, Jonathan L. Sessler

SCIENCE　Vol. 329　No. 5997　p. 1324-1327　2010/09　Research paper (scientific journal)

Synthesis and Photodynamics of 9-Mesitylacridinium Ion-Modified Gold Nanoclusters

Shunichi Fukuzumi, Ryo Hanazaki, Hiroaki Kotani, Kei Ohkubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 32　p. 11002-11003　2010/08　Research paper (scientific journal)

Photoinduced Electron Transfer in Photorobust Coumarins Linked with Electron Donors Affording Long Lifetimes of, Triplet Charge-Separated States

Motonobu Murakami, Kei Ohkubo, Takashi Nanjo, Kazunori Souma, Nobuo Suzuki, Shunichi Fukuzumi

CHEMPHYSCHEM　Vol. 11　No. 12　p. 2594-2605　2010/08　Research paper (scientific journal)

Formation of a Long-Lived Photoinduced Electron-Transfer State in an Electron Acceptor-Donor-Acceptor Porphyrin Triad Connected by Coordination Bonds

Tatsuhiko Honda, Tatsuaki Nakanishi, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 114　No. 33　p. 14290-14299　2010/08　Research paper (scientific journal)

Enhanced radical scavenging activities of catechin derivatives incorporating basic amino acids

Kiyoshi Fukuhara, Ikuo Nakanishi, Kohei Imai, Akiko Ohno, Kei Ohkubo, Shunichi Fukuzumi, Asao Nakamura, Kazunori Anzai, Naoki Miyata, Haruhiro Okuda

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 240　2010/08

Structure and Photoinduced Electron Transfer Dynamics of a Series of Hydrogen-Bonded Supramolecular Complexes Composed of Electron Donors and a Saddle-Distorted Diprotonated Porphyrin

Tatsuhiko Honda, Tatsuaki Nakanishi, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 29　p. 10155-10163　2010/07　Research paper (scientific journal)

The first crystal structure determination of the firefly oxyluciferin and detailed study of its solution-state spectroscopy: implications for the color tuning mechanism of firefly bioluminescence

Pance Naumov, Yutaka Ozawa, Kei Ohkubo, Shunichi Fukuzumi

LUMINESCENCE　Vol. 25　No. 2　p. 81-82　2010/04

Pump‐Probe単結晶X線構造解析による9‐メシチル‐10‐メチルアクリジニウムカチオンの光励起電子移動状態の直接観察

HOSHINO MANABU, SATO TOKUSHI, TOMITA AYANA, NOZAWA SHUNSUKE, OKUBO KEI, KOTANI HIROAKI, FUKUZUMI SHUN'ICHI, UEKUSA HIDEHIRO, ADACHI SHIN'ICHI, KOSHIHARA SHIN'YA

有機結晶部会ニュースレター　No. 26　2010/03/19

フェノール性抗酸化物質に由来するフェノレートアニオンの電子移動反応

中西 郁夫, Zoardar A.K.M. Raushan Kabir, 大久保 敬, 稲見 圭子, 松本 謙一郎, 望月 正隆, 福原 潔, 奥田 晴宏, 伊古田 暢夫, 福住 俊一, 小澤 俊彦, 安西 和紀

日本薬学会年会要旨集　Vol. 130年会　No. 2　p. 173-173　2010/03

Metal ion-coupled and decoupled electron transfer

Shunichi Fukuzumi, Kei Ohkubo

COORDINATION CHEMISTRY REVIEWS　Vol. 254　No. 3-4　p. 372-385　2010/02

Construction of electron-transfer inclusion complex of endohedral metallofullerene with pi-extended host molecule

Tsuchiya Takahiro, Nakamura Risa, Sato Ayumi, Wielopolski Mateusz, Mizorogi Naomi, Akasaka Takeshi, Ohkubo Kei, Fukuzumi Shunichi, Guldi Dirk M., Martin Nazario, Nagase Shigeru

Abstracts of Papers: Host-Guest Chemistry Symposium　Vol. 2010　p. 21-21　2010

Thienyl-substituted methanofullerene derivatives for organic photovoltaic cells

Jung Hei Choi, Kyung-In Son, Taehee Kim, Kyungkon Kim, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF MATERIALS CHEMISTRY　Vol. 20　No. 3　p. 475-482　2010　Research paper (scientific journal)

Synthesis and photochemical properties of alpha-diketoporphyrins as precursors for pi-expanded porphyrins

Hiroko Yamada, Daiki Kuzuhara, Kei Ohkubo, Tetsuro Takahashi, Tetsuo Okujima, Hidemitsu Uno, Noboru Ono, Shunichi Fukuzumi

JOURNAL OF MATERIALS CHEMISTRY　Vol. 20　No. 15　p. 3011-3024　2010　Research paper (scientific journal)

Supramolecular Structures and Photoelectronic Properties of the Inclusion Complex of a Cyclic Free-Base Porphyrin Dimer and C-60

Hirofumi Nobukuni, Yuichi Shimazaki, Hidemitsu Uno, Yoshinori Naruta, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi, Shu Seki, Hayato Sakai, Taku Hasobe, Fumito Tani

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 16　No. 38　p. 11611-11623　2010　Research paper (scientific journal)

Simultaneous production of p-tolualdehyde and hydrogen peroxide in photocatalytic oxygenation of p-xylene and reduction of oxygen with 9-mesityl-10-methylacridinium ion derivatives

Kei Ohkubo, Kentaro Mizushima, Ryosuke Iwata, Kazunori Souma, Nobuo Suzuki, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　Vol. 46　No. 4　p. 601-603　2010　Research paper (scientific journal)

Radical Scavenging Reactivity of Catecholamine Neurotransmitters and the Inhibition Effect for DNA Cleavage

Tomonori Kawashima, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 114　No. 1　p. 675-680　2010/01　Research paper (scientific journal)

Photoinduced DNA cleavage by formation of ROS from oxygen with a neurotransmitter and aromatic amino acids

Tomonori Kawashima, Kei Ohkubo, Shunichi Fukuzumi

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 8　No. 5　p. 994-996　2010　Research paper (scientific journal)

Multistep electron transfer systems based on silicon phthalocyanine, [60]fullerene and trinitrofluorenone

Luis Martin-Gomis, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi, Angela Sastre-Santos

CHEMICAL COMMUNICATIONS　Vol. 46　No. 22　p. 3944-3946　2010　Research paper (scientific journal)

Inter- and Intramolecular Photoinduced Electron Transfer of Flavin Derivatives with Extremely Small Reorganization Energies

Motonobu Murakami, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 16　No. 26　p. 7820-7832　2010　Research paper (scientific journal)

Implementation of redox gradients in hydrogen bonded complexes containing N,N-dimethylaniline, flavin and fullerene derivatives

Motonobu Murakami, Kei Ohkubo, Taku Hasobe, Vito Sgobba, Dirk M. Guldi, Florian Wessendorf, Andreas Hirsch, Shunichi Fukuzumi

JOURNAL OF MATERIALS CHEMISTRY　Vol. 20　No. 8　p. 1457-1466　2010　Research paper (scientific journal)

Electron-Transfer Properties of the Phenolate Anion Derived from a Vitamin E Model in the Presence of a Strong Base in an Aprotic Medium

Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Keiko Inami, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Haruhiro Okuda, Masataka Mochizuki, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 49　p. S213-S214　2010

Electron Transfer from Stable Superoxide Complex to Electron Acceptors as Benzoquinone Derivatives

Tomonori Kawashima, Kei Ohkubo, Shunichi Fukuzumi, Ikuo Nakanishi

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 49　p. S211-S211　2010

Construction of Sn-IV Porphyrin/Trinuclear Ruthenium Cluster Dyads Linked by Pyridine Carboxylates: Photoinduced Electron Transfer in the Marcus Inverted Region

Takahiko Kojima, Kakeru Hanabusa, Kei Ohkubo, Motoo Shiro, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 16　No. 12　p. 3646-3655　2010　Research paper (scientific journal)

Photoinduced change of dielectric permittivity in molecular doped polymer layer

Heisuke Sakai, Hideyuki Murata, Motonobu Murakami, Kei Ohkubo, Shunichi Fukuzumi

APPLIED PHYSICS LETTERS　Vol. 95　No. 25　2009/12　Research paper (scientific journal)

Mechanistic Insights into Hydride-Transfer and Electron-Transfer Reactions by a Manganese(IV)-Oxo Porphyrin Complex

Shunichi Fukuzumi, Naofumi Fujioka, Hiroaki Kotani, Kei Ohkubo, Yong-Min Lee, Wonwoo Nam

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 47　p. 17127-17134　2009/12　Research paper (scientific journal)

Intramolecular base-accelerated radical-scavenging reaction of a planar catechin derivative bearing a lysine moiety.

Kiyoshi Fukuhara, Ikuo Nakanishi, Kei Ohkubo, Yoshinori Obara, Ayako Tada, Kohei Imai, Akiko Ohno, Asao Nakamura, Toshihiko Ozawa, Shiro Urano, Shinichi Saito, Shunichi Fukuzumi, Kazunori Anzai, Naoki Miyata, Haruhiro Okuda

Chemical communications (Cambridge, England)　No. 41　p. 6180-2　2009/11/07　Research paper (scientific journal)

Anisotropic High Electron Mobility and Photodynamics of a Self-Assembled Porphyrin Nanotube Including C-60 Molecules

Hirofumi Nobukuni, Fumito Tani, Yuichi Shimazaki, Yoshinori Naruta, Kei Ohkubo, Tatsuaki Nakanishi, Takahiko Kojima, Shunichi Fukuzumi, Shu Seki

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 113　No. 45　p. 19694-19699　2009/11　Research paper (scientific journal)

Anion-Complexation-Induced Stabilization of Charge Separation

Francis D'Souza, Navaneetha K. Subbaiyan, Yongshu Xie, Jonathan P. Hill, Katsuhiko Ariga, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 44　p. 16138-16146　2009/11

Metalloporphycenes: Synthesis and Characterization of (Pentamethylcyclopentadienyl)ruthenium Sitting-Atop and pi-Complexes

Luciano Cuesta, Elizabeth Karnas, Vincent M. Lynch, Ping Chen, Jing Shen, Karl M. Kadish, Kei Ohkubo, Shunichi Fukuzumi, Jonathan L. Sessler

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 37　p. 13538-13547　2009/09　Research paper (scientific journal)

The nature of long-lived photo-induced charge separation in ferrocene-porphyrin-fullerene molecules

Jeffrey R. Reimers, Sai H. Lee, Allan G. Larsen, Hiroaki Kotani, Kei Ohkubo, Shunichi Fukuzumi, Maxwell J. Crossley

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　Vol. 238　2009/08

Synthesis and Photoinduced Electron Transfer of Phthalocyanine-Perylenebisimide Pentameric Arrays

F. Javier Cespedes-Guirao, Kei Ohkubo, Shunichi Fukuzumi, Angela Sastre-Santos, Fernando Fernandez-Lazaro

JOURNAL OF ORGANIC CHEMISTRY　Vol. 74　No. 16　p. 5871-5880　2009/08　Research paper (scientific journal)

Structure and Spectroscopy of Oxyluciferin, the Light Emitter of the Firefly Bioluminescence

Pance Naumov, Yutaka Ozawa, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 32　p. 11590-11605　2009/08　Research paper (scientific journal)

Photosynthetic Reaction Center Mimicry: Low Reorganization Energy Driven Charge Stabilization in Self-Assembled Cofacial Zinc Phthalocyanine Dimer-Fullerene Conjugate

Francis D'Souza, Eranda Maligaspe, Kei Ohkubo, Melvin E. Zandler, Navaneetha K. Subbaiyan, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 25　p. 8787-8797　2009/07

Photosynthetic Reaction Center Mimicry: Low Reorganization Energy Driven Charge Stabilization in Self-Assembled Cofacial Zinc Phthalocyanine Dimer-Fullerene Conjugate

Francis D'Souza, Eranda Maligaspe, Kei Ohkubo, Melvin E. Zandler, Navaneetha K. Subbaiyan, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 25　p. 8787-8797　2009/07

Aliphatic C-H Bond Activation Initiated by a (mu-eta(2):eta(2)-Peroxo)dicopper(II) Complex in Comparison with Cumylperoxyl Radical

Takahiro Matsumoto, Kei Ohkubo, Kaoru Honda, Akiko Yazawa, Hideki Furutachi, Shuhei Fujinami, Shunichi Fukuzumi, Masatatsu Suzuki

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 26　p. 9258-9267　2009/07　Research paper (scientific journal)

Tuning Charge Transfer Energetics in Reaction Center Mimics via T-h-Functionalization of Fullerenes

Fabian Spaenig, Christian Kovacs, Frank Hauke, Kei Ohkubo, Shunichi Fukuzumi, Dirk M. Guldi, Andreas Hirsch

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 23　p. 8180-8195　2009/06　Research paper (scientific journal)

In Vitro Heavy-Atom Effect of Palladium(II) and Platinum(II) Complexes of Pyrrolidine-Fused Chlorin in Photodynamic Therapy

Makoto Obata, Shiho Hirohara, Rika Tanaka, Isamu Kinoshita, Kei Ohkubo, Shunichi Fukuzumi, Masao Tanihara, Shigenobu Yano

JOURNAL OF MEDICINAL CHEMISTRY　Vol. 52　No. 9　p. 2747-2753　2009/05　Research paper (scientific journal)

ブラジル産プロポリスに含まれるフェノール性抗酸化物質およびその誘導体のラジカル消去機構

中西 郁夫, 宇都 義浩, 大久保 敬, 川島 知憲, 松本 謙一郎, Manda Sushma, 堀 均, 福原 潔, 奥田 晴宏, 伊古田 暢夫, 小澤 俊彦, 安西 和紀

日本薬学会年会要旨集　Vol. 129年会　No. 2　p. 133-133　2009/03

Rational Design and Functions of Electron Donor-Acceptor Dyads with Much Longer Charge-Separated Lifetimes than Natural Photosynthetic Reaction Centers

Kei Ohkubo, Shunichi Fukuzumi

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 82　No. 3　p. 303-315　2009/03

Catalytic Activity of Biscobalt Porphyrin-Corrole Dyads Toward the Reduction of Dioxygen

Karl M. Kadish, Laurent Fremond, Jing Shen, Ping Chen, Kei Ohkubo, Shunichi Fukuzumi, Maya El Ojaimi, Claude P. Gros, Jean-Michel Barbe, Roger Gullard

INORGANIC CHEMISTRY　Vol. 48　No. 6　p. 2571-2582　2009/03　Research paper (scientific journal)

Reorganization Energies of Diprotonated and Saddle-Distorted Porphyrins In Photoinduced Electron-Transfer Reduction Controlled by Conformational Distortion

Tatsuaki Nakanishi, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 131　No. 2　p. 577-584　2009/01　Research paper (scientific journal)

Radical-Scavenging Activity of Biosynthetic Precursors of Vitemin E and Their Derivatives

Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Ken-ichiro Matsumoto, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 47　p. S191-S191　2009

Charge separation in metallomacrocycle complexes linked with electron acceptors by axial coordination

Shunichi Fukuzumi, Tatsuhiko Honda, Kei Ohkubo, Takahiko Kojima

DALTON TRANSACTIONS　No. 20　p. 3880-3889　2009　Research paper (scientific journal)

Change in the Site of Electron-Transfer Reduction of a Zinc-Quinoxalinoporphyrin/Gold-Quinoxalinoporphyrin Dyad by Binding of Scandium Ions and the Resulting Remarkable Elongation of the Charge-Shifted-State Lifetime

Kei Ohkubo, Rachel Garcia, Paul J. Sintic, Tony Khoury, Maxwell J. Crossley, Karl M. Kadish, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 15　No. 40　p. 10493-10503　2009　Research paper (scientific journal)

Photoconductivity of Porphyrin Nanochannels Composed of Diprotonated Porphyrin Dications with Saddle Distortion and Electron Donors

Tatsuaki Nakanishi, Takahiko Kojima, Kei Ohkubo, Taku Hasobe, Ken-ichi Nakayama, Shunichi Fukuzumi

CHEMISTRY OF MATERIALS　Vol. 20　No. 24　p. 7492-7500　2008/12　Research paper (scientific journal)

Metal Quinolinolate-Fullerene(s) Donor-Acceptor Complexes: Evidence for Organic LED Molecules Acting as Electron Donors in Photoinduced Electron-Transfer Reactions

Francis D'Souza, Eranda Maligaspe, Melvin E. Zandler, Navaneetha K. Subbaiyan, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 50　p. 16959-16967　2008/12　Research paper (scientific journal)

Adiabatic Photoinduced Electron Transfer and Back Electron Transfer in a Series of Axially Substituted Silicon Phthalocyanine Triads

Luis Martin-Gomis, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi, Angela Sastre-Santos

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 112　No. 45　p. 17694-17701　2008/11　Research paper (scientific journal)

"Umpolung" Photoinduced Charge Separation in an Anion-bound Supramolecular Complex

Jonathan L. Sessler, Elizabeth Karnas, Sung Kuk Kim, Zhongping Ou, Min Zhang, Karl M. Kadish, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 46　p. 15256-+　2008/11　Research paper (scientific journal)

Highly Selective Synthesis of the Ring-B Reduced Chlorins by Ferric Chloride-Mediated Oxidation of Bacteriochlorins: Effects of the Fused Imide vs Isocyclic Ring on Photophysical and Electrochemical Properties

Chao Liu, Mahabeer P. Dobhal, Manivannan Ethirajan, Joseph R. Missert, Ravindra K. Pandey, Sathyamangalam Balasubramanian, Dinesh K. Sukumaran, Min Zhang, Karl M. Kadish, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 43　p. 14311-14323　2008/10　Research paper (scientific journal)

Corrole-Fullerene Dyads: Formation of Long-Lived Charge-Separated States in Nonpolar Solvents

Francis D'Souza, Raghu Chitta, Kei Ohkubo, Mariusz Tasior, Navaneetha K. Subbaiyan, Melvin E. Zandler, Maciek K. Rogacki, Daniel T. Gryko, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 43　p. 14263-14272　2008/10

Control of Photoinduced Electron Transfer in Zinc Phthalocyanine-Perylenediimide Dyad and Triad by the Magnesium Ion

Shunichi Fukuzumi, Kei Ohkubo, Javier Ortiz, Ana M. Gutierrez, Fernando Fernandez-Lazaro, Angela Sastre-Santos

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 43　p. 10744-10752　2008/10　Research paper (scientific journal)

Clarification of the oxidation state of cobalt corroles in heterogeneous

Karl M. Kadish, Jing Shen, Laurent Fremond, Ping Chen, Maya El Ojaimi, Mohammed Chkounda, Claude P. Gros, Jean-Michel Barbe, Kei Ohkubo, Shunichi Fukuzumi, Roger Guilard

INORGANIC CHEMISTRY　Vol. 47　No. 15　p. 6726-6737　2008/08　Research paper (scientific journal)

Exciplex mediated photoinduced electron transfer reactions of phthalocyanine-fullerene dyads

Marja Niemi, Nikolai V. Tkachenko, Alexander Efimov, Heli Lehtivuori, Kei Ohkubo, Shunichi Fukuzumi, Helge Lemmetyinen

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 30　p. 6884-6892　2008/07　Research paper (scientific journal)

Androgynous porphyrins. Silver(II) quinoxalinoporphyrins act as both good electron donors and acceptors

Shunichi Fukuzumi, Kei Ohkubo, Weihua Zhu, Maxine Sintic, Tony Khoury, Paul J. Sintic, Wenbo E, Zhongping Ou, Maxwell J. Crossley, Karl M. Kadish

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 29　p. 9451-9458　2008/07　Research paper (scientific journal)

Intermolecular vs. intramolecular photoinduced electron transfer from nucleotides in DNA to acridinium ion derivatives in relation with DNA cleavage

Makiko Tanaka, Kazusa Yukimoto, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY　Vol. 197　No. 2-3　p. 206-212　2008/06　Research paper (scientific journal)

DNA cleavage induced by photoiffadiation of coenzyme B-12 and organocobaloximes without dioxygen

Makiko Tanaka, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY　Vol. 197　No. 1　p. 94-100　2008/06　Research paper (scientific journal)

Metal bacteriochlorins which act as dual singlet oxygen and superoxide generators

Shunichi Fukuzumi, Kei Ohkubo, Xiang Zheng, Yihui Chen, Ravindra K. Pandey, Riqiang Zhan, Karl M. Kadish

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 112　No. 9　p. 2738-2746　2008/03　Research paper (scientific journal)

Enhanced radical-scavenging activity of naturally-oriented artepillin C derivatives.

Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Tomonori Kawashima, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, Kazunori Anzai

Chemical communications (Cambridge, England)　No. 5　p. 626-8　2008/02/07　Research paper (scientific journal)

Synthesis and characterization of novel ferrocene-containing pyridylamine ligands and their ruthenium(II) complexes: Electronic communication through hydrogen-bonded amide linkage

Takahiko Kojima, Daisuke Noguchi, Tomoko Nakayama, Yuji Inagaki, Yoshihito Shiota, Kazunari Yoshizawa, Kei Ohkubo, Shunichi Fulkuzumi

INORGANIC CHEMISTRY　Vol. 47　No. 3　p. 886-895　2008/02　Research paper (scientific journal)

Electron-transfer and acid-base properties of a two-electron oxidized form of quaterpyrrole that acts as both an electron donor and an acceptor

Min Zhang, E. Wenbo, Kei Ohkubo, David Sanchez-Garcia, Dae-Wi Yoon, Jonathan L. Sessler, Shunichi Fukuzumi, Karl M. Kadish

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 7　p. 1633-1642　2008/02　Research paper (scientific journal)

Construction of Supramolecular System Besed on Endohedral Metallofullerene

Tsuchiya Takahiro, Sato Kumiko, Yokosawa Yuya, Sakuma Noriko, Akasaka Takeshi, Kato Tatsuhisa, Ohkubo Kei, Fukuzumi Shunichi, Nagase Shigeru

Abstracts of Papers: Host-Guest Chemistry Symposium　Vol. 2008　p. 107-107　2008

Structure-Activity Relationship in Radical- Scavenging Reactions of Naturally-Oriented Artepillin C Derivatives

I. Nakanishi, Y. Uto, K. Ohkubo, T. Kawashima, S. Manda, K. Matsumoto, H. Hori, K. Fukuhara, H. Okuda, N. Ikota, S. Fukuzumi, T. Ozawa, K. Anzai

PROCEEDINGS OF THE XIV BIENNIAL MEETING OF THE SOCIETY FOR FREE RADICAL RESEARCH INTERNATIONAL　p. 125-+　2008　Research paper (international conference proceedings)

Synthesis, structure, and transport property of perfluorinated oligofluorenes

Kimitaka Ohkubo, Youichi Sakamoto, Toshiyasu Suzuki, Toshimitsu Tsuzuki, Daisuke Kumaki, Shizuo Tokito

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 14　No. 15　p. 4472-4474　2008　Research paper (scientific journal)

Spectroscopic characterization of photolytically generated radical ion pairs in single-wall carbon nanotubes bearing surface-immobilized tetrathiafulvalenes

M. Angeles Herranz, Christian Ehli, Stephane Campidelli, Miriam Gutierrez, Gordon L. Hug, Kei Ohkubo, Shunichi Fukuzumi, Maurizio Prato, Nazario Martin, Dirk M. Guldi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 130　No. 1　p. 66-73　2008/01　Research paper (scientific journal)

Response: Why had long-lived electron-transfer states of donor-substituted 10-methylacridinium ions been overlooked? Formation of the dimer radical cations detected in the near-IR region

Shunichi Fukuzumi, Hiroaki Kotani, Kei Ohkubo

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 10　No. 33　p. 5159-5162　2008

Proton-coupled electron transfer in ruthenium(II)-pterin complexes: formation of ruthenium-coordinated pterin radicals and their electronic structures

Soushi Miyazaki, Takahilko Kojima, Taisuke Sakamoto, Tetsuya Matsumoto, Kel Ohkubo, Shunichi Fukuzumi

INORGANIC CHEMISTRY　Vol. 47　No. 1　p. 333-343　2008/01　Research paper (scientific journal)

Proton Shift upon One-Electron Reduction in Ruthenium(II)-Coordinated Pterins

Soushi Miyazaki, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 47　No. 50　p. 9669-9672　2008　Research paper (scientific journal)

One-Step Hydrogen Atom Transfer in Radical-Scavenging Reactions by Artepillin C Derivatives Enhanced by Electron-Donating Groups

Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Tomonori Kawashima, Sushma Manda, Kiyoshi Fukuhara, Haruhiro Okuda, Hitoshi Hori, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 45　p. S63-S63　2008

Long-lived charge-separated states of simple electron donor-acceptor dyads using porphyrins and phthalocyanines

Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 12　No. 9　p. 993-1004　2008

Formation of hydrogen peroxide from coal tar as hydrogen sources using 9-mesityl-10-methylacridinium ion as an effective photocatalyst

Hiroaki Kotani, Kei Ohkubo, Shunichi Fukuzumi

APPLIED CATALYSIS B-ENVIRONMENTAL　Vol. 77　No. 3-4　p. 317-324　2008/01　Research paper (scientific journal)

Formation of dodecaphenylporphodimethene via facile protonation of saddle-distorted dodecaphenylporphyrin

Takahiko Kojima, Kakeru Hanabusa, Kei Ohkubo, Motoo Shiro, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　No. 48　p. 6513-6515　2008　Research paper (scientific journal)

Face-to-face Pacman-type porphyrin-fullerene dyads: Design, synthesis, charge-transfer interactions, and photophysical studies

Francis D'Souza, Eranda Maligaspe, Paul A. Karr, Amy Lea Schumacher, Maya El Ojaimi, Claude P. Gros, Jean-Michel Barbe, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 14　No. 2　p. 674-681　2008　Research paper (scientific journal)

Effect of metal ions on the radical-scavenging rates of hydroquinones

Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Seiji Shirai, Eiji Nakata, Sushma Manda, Hideko Nagasawa, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Kazunori Anzai, Toshihiko Ozawa

YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN　Vol. 128　p. 69-69　2008

Does bimolecular charge recombination in highly exergonic electron transfer afford the triplet excited state or the ground state of a photosensitizer?

Motonobu Murakami, Kei Ohkubo, Paulami Mandal, Tapan Ganguly, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 4　p. 635-642　2008/01　Research paper (scientific journal)

Control of the orbital delocalization and implications for molecular rectification in the radical anions of porphyrins with coplanar 90 degrees and 180 degrees beta,beta '-fused extensions

E. Wenbo, Karl M. Kadish, Paul J. Sintic, Tony Khoury, Linda J. Govenlock, Zhongping Ou, Jianguo Shao, Kei Ohkubo, Jeffrey R. Reimers, Shunichi Fukuzumi, Maxwell J. Crossley

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 3　p. 556-570　2008/01　Research paper (scientific journal)

Contrasting photodynamics between C-60-dithiapyrene and C-60-pyrene dyads

Dirk M. Guldi, Fabian Spaenig, David Kreher, Igor F. Perepichka, Cornelia van der Pol, Martin R. Bryce, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 14　No. 1　p. 250-258　2008　Research paper (scientific journal)

A discrete supramolecular conglomerate composed of two saddle-distorted zinc(II)-phthalocyanine complexes and a doubly protonated porphyrin with saddle distortion undergoing efficient photoinduced electron transfer

Takahiko Kojima, Tatsuhiko Honda, Kei Ohkubo, Motoo Shiro, Takahiro Kusukawa, Takamitsu Fukuda, Nagao Kobayashi, Shunichi Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 47　No. 35　p. 6712-6716　2008　Research paper (scientific journal)

(Pentamethylcyclopentadienyl)ruthenium pi-Complexes of Metalloporphyrins: Platforms with Novel Photo- and Electrochemical Properties

Luciano Cuesta, Elizabeth Karnas, Vincent M. Lynch, Jonathan L. Sessler, Wiroaj Kajonkijya, Weihua Zhu, Min Zhang, Zhongping Ou, Karl. M. Kadish, Kei Ohkubo, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 14　No. 33　p. 10206-10210　2008　Research paper (scientific journal)

Involvement of electron transfer in the radical-scavenging reaction of resveratrol

Ikuo Nakanishi, Tomokazu Shimada, Kei Ohkubo, Sushma Manda, Takehiko Shimizu, Shiro Urano, Haruhiro Okuda, Naoki Miyata, Toshihiko Ozawa, Kazunori Anzai, Shunichi Fukuzumi, Nobuo Ikota, Kiyoshi Fukuhara

CHEMISTRY LETTERS　Vol. 36　No. 10　p. 1276-1277　2007/10　Research paper (scientific journal)

Design and synthesis of polymetallic complexes based on meso-calix[4]pyrrole: Platforms for multielectron chemistry

Luciano Cuesta, Dustin Gross, Vincent M. Lynch, Zhongping Ou, Wiroaj Kajonkijya, Kei Ohkubo, Shunichi Fukuzumi, Karl M. Kadish, Jonathan L. Sessler

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 129　No. 38　p. 11696-+　2007/09　Research paper (scientific journal)

Synthesis and photophysical studies of a new nonaggregated C-60-silicon phthalocyanine-C-60 triad

Luis Martin-Gomis, Kei Ohkubo, Fernando Fernandez-Lazaro, Shunichi Fukuzumi, Angela Sastre-Santos

ORGANIC LETTERS　Vol. 9　No. 17　p. 3441-3444　2007/08　Research paper (scientific journal)

Quinoxalino[2,3-b']porphyrins behave as pi-expanded porphyrins upon one-electron reduction: Broad control of the degree of delocalization through substitution at the macrocycle periphery

Karl M. Kadish, E. Wenbo, Paul J. Sintic, Zhongping Ou, Jianguo Shao, Kei Ohkubo, Shunichi Fukuzumi, Linda J. Govenlock, James A. McDonald, Andrew C. Try, Zheng-Li Cai, Jeffrey R. Reimers, Maxwell J. Crossley

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 111　No. 30　p. 8762-8774　2007/08　Research paper (scientific journal)

Effect of solvent polarity on the one-electron oxidation of cyclic nitroxyl radicals

Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Ken-ichiro Matsumoto, Toshihiko Ozawa, Shunichi Fukuzumi, Nobuo Ikota, Kazunori Anzai

CHEMISTRY LETTERS　Vol. 36　No. 7　p. 914-915　2007/07　Research paper (scientific journal)

A long-lived o-semiquinone radical anion is formed from N-beta-alanyl-5-S-glutathionyl-3,4-dihydroxyphenylalanine (5-S-GAD), an insect-derived antibacterial substance

Nobuko Akiyama, Ikuo Nakanishi, Kei Ohkubo, Kazue Satoh, Koichiro Tsuchiya, Takeshi Nishikawa, Shunichi Fukuzumi, Nobuo Ikota, Toshihiko Ozawa, Masafumi Tsujimoto, Shunji Natori

JOURNAL OF BIOCHEMISTRY　Vol. 142　No. 1　p. 41-48　2007/07　Research paper (scientific journal)

Redox behavior of cyclo[6]pyrrole in the formation of a uranyl complex

Patricia J. Melfi, Sung Kuk Kim, Jeong Tae Lee, Frederic Bolze, Daniel Seidel, Vincent M. Lynch, Jacqueline M. Veauthier, Andrew J. Gaunt, Mary P. Neu, Zhongping Ou, Karl M. Kadish, Shunichi Fukuzumi, Kei Ohkubo, Jonathan L. Sessler

INORGANIC CHEMISTRY　Vol. 46　No. 13　p. 5143-5145　2007/06　Research paper (scientific journal)

A tightly coupled bis(zinc(II) phthalocyanine)-perylenediimide ensemble to yield long-lived radical ion pair states

Angel J. Jimenez, Fabian Spaenig, M. Salome Rodriguez-Morgade, Kei Ohkubo, Shunichi Fukuzumi, Dirk M. Guldi, Tomas Torres

ORGANIC LETTERS　Vol. 9　No. 13　p. 2481-2484　2007/06　Research paper (scientific journal)

Porphyrin-diones and porphyrin-tetraones: Reversible redox units being localized within the porphyrin macrocycle and their effect on tautomerism

Karl M. Kadish, Wenbo E, Riqiang Zhan, Tony Khoury, Linda J. Govenlock, Jognandan K. Prashar, Paul J. Sintic, Kei Ohkubo, Shunichi Fukuzumi, Maxwell J. Crossley

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 129　No. 20　p. 6576-6588　2007/05　Research paper (scientific journal)

Intramolecular electron transfer within the substituted tetrathiafulvalene-quinone dyads: Facilitated by metal ion and photomodulation in the presence of spiropyran

Hui Wu, Deqing Zhang, Lei Su, Kei Ohkubo, Chunxi Zhang, Shiwei Yin, Lanqun Mao, Zhigang Shuai, Shunichi Fukuzumi, Daoben Zhu

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 129　No. 21　p. 6839-6846　2007/05　Research paper (scientific journal)

Electron-transfer oxidation properties of substituted Bi-, Ter-, and quaterpyrroles

Wenbo E, Kei Ohkubo, David Sanchez-Garcia, Min Zhang, Jonathan L. Sessler, Shunichi Fukuzumi, Karl M. Kadish

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 111　No. 17　p. 4320-4326　2007/05　Research paper (scientific journal)

Model studies of 6,7-indolequinone cofactors of quinoprotein amine dehydrogenases

Yoko Murakami, Noriyuki Yoshimoto, Nobutaka Fujieda, Kei Ohkubo, Tatsuhiko Hasegawa, Kenji Kano, Shunichi Fukuzumi, Shinobu Itoh

JOURNAL OF ORGANIC CHEMISTRY　Vol. 72　No. 9　p. 3369-3380　2007/04　Research paper (scientific journal)

Scandium ion-accelerated scavenging reaction of cumylperoxyl radical by a cyclic nitroxyl radical via electron transfer

Ikuo Nakanishi, Kumiko Kawaguchi, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Hideko Kanazawa, Keizo Takeshita, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, Nobuo Ikota

CHEMISTRY LETTERS　Vol. 36　No. 3　p. 378-379　2007/03　Research paper (scientific journal)

Reversible Electron Transfer System Constructed from Endohedral Metallofullerene and Organic Donor

Tsuchiya Takahiro, Sato Kumiko, Akasaka Takeshi, Kato Tatsuhisa, Ohkubo Kei, Fukuzumi Shunichi, Nagase Shigeru

Abstracts of Symposium on Physical Organic Chemistry　Vol. 37　p. 160-160　2007

π-complex formation between a bisporphyrin and acridinium ion and the photodynamics

Makiko Tanaka, Kei Ohkubo, Claude P. Gros, Roger Guilard, Shunichi Fukuzumi

ECS Transactions　Vol. 2　No. 12　p. 167-176　2007　Research paper (international conference proceedings)

Formation of a charge-separated state of a fullerene-trinitrofluorenone dyad by complexation with scandium ion

Kei Ohkubo, Javier Ortiz, Luis Martin-Gomis, Fernando Fernández-Lázaro, Ángela Sastre-Santos, Shunichi Fukuzumi

ECS Transactions　Vol. 2　No. 12　p. 15-25　2007　Research paper (international conference proceedings)

Synthesis and characterization of mononuclear Ruthenium(III)Pyridylamine complexes and mechanistic insights into their catalytic alkane functionalization with m-chloroperbenzoic acid

Takahiko Kojima, Ken-Ichi Hayashi, Shin-ya Iizuka, Fumito Tani, Yoshinori Naruta, Masaki Kawano, Yuji Ohashi, Yuichirou Hirai, Kei Ohkubold, Yoshihisa Matsuda, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 13　No. 29　p. 8212-8222　2007　Research paper (scientific journal)

Selective inclusion of electron-donating molecules into porphyrin nanochannels derived from the self-assembly of saddle-distorted, protonated porphyrins and photoinduced electron transfer from guest molecules to porphyrin dications

Takahiko Kojima, Tatsuaki Nakanishi, Ryosuke Harada, Kei Ohkubo, Seigo Yamauchi, Shunichi Fukuzumi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 13　No. 31　p. 8714-8725　2007　Research paper (scientific journal)

Photophysical, electrochemical characteristics and cross-linking of STAT-3 protein by an efficient bifunctional agent for fluorescence image-guided photodynamic therapy

Yihui Chen, Kei Ohkubo, Min Zhang, E. Wenbo, Weiguo Liu, Suresh K. Pandey, Michael Ciesielski, Heinz Baumann, Tracy Erin, Shunichi Fukuzumi, Karl M. Kadish, Robert Fenstermaker, Allan Oseroff, Ravindra K. Pandey

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES　Vol. 6　No. 12　p. 1257-1267　2007　Research paper (scientific journal)

Photoinduced electron transfer in a beta,beta '-pyrrolic fused ferrocene-(zinc porphyrin)-fullerene

David Curiel, Kei Ohkubo, Jeffrey R. Reimers, Shunichi Fukuzumi, Maxwell J. Crossley

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 9　No. 38　p. 5260-5266　2007　Research paper (scientific journal)

Nitroxyl radicals: electrochemical redox behaviour and structure-activity relationships

Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Haruko Yakumaru, Ken-Ichiro Matsumoto, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, Kazunori Anzai

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 5　No. 24　p. 3951-3955　2007　Research paper (scientific journal)

Modulation of characteristics of a ruthenium-coordinated flavin analogue that shows an unusual coordination mode

Soushi Miyazaki, Kei Ohkubo, Takahiko Kojima, Shunichi Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 46　No. 6　p. 905-908　2007　Research paper (scientific journal)

Intramolecular base-accelerated radical-scavenging reaction of a planar catechin derivative having a lysine moiety

Kiyoshi Fukuhara, Ikuo Nakanishi, Miki Obara, Kei Ohkubo, Tomonori Kawashima, Toshihiko Ozawa, Nobuo Ikota, Kazunori Anzai, Shunichi Fukuzumi, Naoki Miyata, Shinichi Saito, Haruhiro Okuda

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 43　p. S96-S96　2007

Fullerene acting as an electron donor in a donor-acceptor dyad to attain the long-lived charge-separated state by complexation with scandium ion

Kei Ohkubo, Javier Ortiz, Luis Martin-Gomis, Fernando Fernandez-Lazaro, Angela Sastre-Santos, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　No. 6　p. 589-591　2007　Research paper (scientific journal)

Enhanced photoinduced oligomerization of fullerene via radical coupling between fullerene radical cation and radical anion using 9-mesityl-10-methylacridinium ion

Kei Ohkubo, Ryosuke Iwata, Takahiro Yanagimoto, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　No. 30　p. 3139-3141　2007　Research paper (scientific journal)

Electron-transfer mechanism in the radical-scavenging reaction of resveratrol

Ikuo Nakanishi, Tomokazit Shimada, Kei Ohkubo, Sushma Manda, Shiro Urano, Haruhiro Okuda, Naoki Miyata, Toshihiko Ozawa, Konnori Anzai, Shunichi Fukuzumi, Nobuo Ikoto, Kiyoshi Fukuhara

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 43　p. S17-S17　2007

Efficient photocatalytic hydrogen evolution without an electron mediator using a simple electron donor-acceptor dyad

Hiroaki Kotani, Toshiya Ono, Kei Ohkubo, Shunichi Fukuzumi

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 9　No. 12　p. 1487-1492　2007　Research paper (scientific journal)

A discrete conglomerate of a distorted Mo(V)-porphyrin with a directly coordinated keggin-type polyoxometalate

Atsutoshi Yokoyama, Takahiko Kojima, Kei Ohkubo, Shunichi Fukuzumi

CHEMICAL COMMUNICATIONS　No. 39　p. 3997-3999　2007　Research paper (scientific journal)

Photocatalytic formation of dimethyllepidopterene from 9,10-dimethylanthracene via electron-transfer oxidation

Kei Ohkubo, Ryosuke Iwata, Soushi Miyazaki, Takahiko Kojima, Shunichi Fukuzumi

ORGANIC LETTERS　Vol. 8　No. 26　p. 6079-6082　2006/12　Research paper (scientific journal)

Viologen-modified platinum clusters acting as an efficient catalyst in photocatalytic hydrogen evolution

Hiroaki Kotani, Kei Ohkubo, Yoshizo Takai, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 110　No. 47　p. 24047-24053　2006/11　Research paper (scientific journal)

Spin-site exchange system constructed from endohedral metallofullerenes and organic donors

Takahiro Tsuchiya, Kumiko Sato, Hiroki Kurihara, Takatsugu Wakahara, Yutaka Maeda, Takeshi Akasaka, Kei Ohkubo, Shunichi Fukuzumi, Tatsuhisa Kato, Shigeru Nagase

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 128　No. 45　p. 14418-14419　2006/11　Research paper (scientific journal)

Persistent electron-transfer state of a pi-complex of acridinium ion inserted between porphyrin rings of cofacial bisporphyrins

Makiko Tanaka, Kei Ohkubo, Claude P. Gros, Roger Guilard, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 128　No. 45　p. 14625-14633　2006/11　Research paper (scientific journal)

Photocatalytic electron-transfer oxidation of triphenylphosphine and benzylamine with molecular oxygen via formation of radical cations and superoxide ion

Kei Ohkubo, Takashi Nanjo, Shunichi Fukuzumi

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 79　No. 10　p. 1489-1500　2006/10　Research paper (scientific journal)

Activation of electron-transfer reduction of oxygen by hydrogen bond formation of superoxide anion with ammonium ion

Kei Ohkubo, Hironori Kitaguchi, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 110　No. 41　p. 11613-11616　2006/10　Research paper (scientific journal)

Reductive DNA cleavage induced by UVA photoirradiation of NADH without oxygen

Makiko Tanaka, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 128　No. 38　p. 12372-12373　2006/09　Research paper (scientific journal)

Photocatalytic oxygenation of olefins with oxygen isolation of 1,2-dioxetane and the photocatalytic O-O bond cleavage

Kei Ohkubo, Takashi Nanjo, Shunichi Fukuzumi

CATALYSIS TODAY　Vol. 117　No. 1-3　p. 356-361　2006/09　Research paper (scientific journal)

DNA cleavage by UVA irradiation of NADH with dioxygen via radical chain processes

Makiko Tanaka, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 110　No. 38　p. 11214-11218　2006/09　Research paper (scientific journal)

Photoinduced electron-transfer dynamics and long-lived CS states of donor-acceptor linked dyads and a triad containing a gold porphyrin in nonpolar solvents

Kei Ohkubo, Paul J. Sintic, Nikolai V. Tkachenko, Helge Lemmetyinen, Wenbo E, Zhongping Ou, Jianguo Shao, Karl M. Kadish, Maxwell J. Crossley, Shunichi Fukuzumi

CHEMICAL PHYSICS　Vol. 326　No. 1　p. 3-14　2006/07　Research paper (scientific journal)

Host-guest complexation of endohedral metallofullerene with azacrown ether and its application

Takahiro Tsuchiya, Kumiko Sato, Hiroki Kurihara, Takatsugu Wakahara, Tsukasa Nakahodo, Yutaka Maeda, Takeshi Akasaka, Kei Ohkubo, Shunich Fukuzumi, Tatsuhisa Kato, Naomi Mizorogi, Kaoru Kobayashi, Shigeru Nagase

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 128　No. 20　p. 6699-6703　2006/05　Research paper (scientific journal)

ニトロキシドスピンプローブによるペルオキシルラジカル消去の反応機構解明

川口 久美子, 中西 郁夫, 大久保 敬, 川島 知憲, 金澤 秀子, 安西 和紀, 竹下 啓蔵, 小澤 俊彦, 福住 俊一, 伊古田 暢夫

日本薬学会年会要旨集　Vol. 126年会　No. 2　p. 69-69　2006/03

Structural basis for DNA-cleaving activity of resveratrol in the presence of Cu(II)

K Fukuhara, M Nagakawa, Nakanishi, I, K Ohkubo, K Imai, S Urano, S Fukuzumi, T Ozawa, N Ikota, M Mochizuki, N Miyata, H Okuda

BIOORGANIC & MEDICINAL CHEMISTRY　Vol. 14　No. 5　p. 1437-1443　2006/03　Research paper (scientific journal)

Photocatalytic oxygenation of pivalic acid with molecular oxygen via photoinduced electron transfer using 10-methylacridinium ions

K Suga, K Ohkubo, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 110　No. 11　p. 3860-3867　2006/03　Research paper (scientific journal)

Organotin perfluorooctanesulfonates as air-stable Lewis acid catalysts: Synthesis, characterization, and catalysis

DL An, ZH Peng, A Orita, A Kurita, S Man-e, K Ohkubo, XS Li, S Fukuzumi, J Otera

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 12　No. 6　p. 1642-1647　2006/02　Research paper (scientific journal)

Electron-transfer oxidation properties of unsaturated fatty acids and mechanistic insight into lipoxygenases

H Kitaguchi, K Ohkubo, S Ogo, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 110　No. 5　p. 1718-1725　2006/02　Research paper (scientific journal)

Construction of supramolecular complex based on paramagnetic endofullerene

Tsuchiya Takahiro, Sato Kumiko, Kurihara Hiroki, Wakahara Takatsugu, Akasaka Takeshi, Maeda Yutaka, Kato Tatsuhisa, Ohkubo Kei, Fukuzumi Shunichi, Mizorogi Naomi, Nagase Shigeru

Abstracts of Symposium on Physical Organic Chemistry　Vol. 18　p. 79-79　2006

Kinetic study on the radical-scavenging activity of natural antioxidants having 4-propenylphenol structures

T. Kawashima, I. Nakanishi, K. Ohkubo, Y. Uto, S. Manda, H. Kanazawa, K. Fukuhara, H. Okuda, K. Suzuki, H. Nagasawa, H. Hori, K. Anzai, T. Ozawa, S. Fukuzumi, N. Ikota

PROCEEDINGS OF THE XIII CONGRESS OF THE SOCIETY FOR FREE RADICAL RESEARCH INTERNATIONAL　p. 199-+　2006　Research paper (international conference proceedings)

Fine control of electron-transfer properties of bisphenol developing agents for silver salt photothermographic materials by hydrogen bonding substituents

Hiromi Akahori, Kenji Ohnuma, Hideki Komatsu, Tetsuya Suzuki, Tsuyoshi Mitsuhashi, Kei Ohkubo, Takashi Nanjo, Shunichi Fukuzumi

ICIS '06: INTERNATIONAL CONGRESS OF IMAGING SCIENCE, FINAL PROGRAM AND PROCEEDINGS　p. 208-+　2006　Research paper (international conference proceedings)

Synthesis, radical-scavenging activity, and redox behavior of planar catechin derivatives

K. Fukuhara, I. Nakanishi, T. Kawashima, A. Tada, H. Yakumaru, K. Ohkubo, H. Kanazawa, S. Urano, H. Okuda, N. Miyata, K. Anzai, T. Ozawa, S. Fukuzumi, N. Ikota

FREE RADICAL RESEARCH　Vol. 40　p. S97-S97　2006

Solvent-free selective photocatalytic oxidation of benzyl alcohol to benzaldehyde by molecular oxygen using 9-phenyl-10-methylacridinium

K Ohkubo, K Suga, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 19　p. 2018-2020　2006　Research paper (scientific journal)

Radical-scavenging reactions of 4-propenyl-phenol derivatives

Tomonori Kawashima, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Sushma Manda, Keiko Suzuki, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Nagasawa, Hitoshi Hori, Kazumori Anzai, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 41　p. S23-S23　2006

Radical-scavenging activity of nitroxyl radical as an electron donor

S. Manda, K. Kawaguchi, K. Ohkubo, T. Kawashima, H. Kanazawa, K. Takeshita, K. Anzai, T. Ozawa, S. Fukuzumi, N. Ikota, I. Nakanishi

PROCEEDINGS OF THE XIII CONGRESS OF THE SOCIETY FOR FREE RADICAL RESEARCH INTERNATIONAL　Vol. 40　p. 237-+　2006　Research paper (international conference proceedings)

Kinetic study on the radical-scavenging activity of natural antioxidants having 4-propenylphenol structures

T. Kawashima, I. Nakanishi, K. Ohkubo, Y. Uto, S. Manda, H. Kanazawa, K. Fukuhara, H. Okuda, K. Suzuki, H. Nagasawa, H. Hori, K. Anzai, T. Ozawa, S. Fukuzumi, N. Ikota

FREE RADICAL RESEARCH　Vol. 40　p. S102-S102　2006

Hydrogen abstraction from neurotransmitters by active oxygen species facilitated by intramolecular hydrogen bonding in the radical intermediates

K Ohkubo, Y Moro-oka, S Fukuzumi

ORGANIC & BIOMOLECULAR CHEMISTRY　Vol. 4　No. 6　p. 999-1001　2006　Research paper (scientific journal)

Direct detection of nucleotide radical cations produced by electrontransfer oxidation of DNA bases with electron-transfer state of 9-mesityl-10-methylacridinium ion and resulting efficient DNA cleavage without oxygen

K Ohkubo, K Yukimoto, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 23　p. 2504-2506　2006　Research paper (scientific journal)

DNA cleaving-activity of water-soluble C-70 under visible-light irradiation

Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Kumiko Kawaguchi, Minako Nyui, Mitsuko Takusagawa, Sushma Manda, Tomoyoshi Suenobu, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Kanazawa, Naoki Miyata, Toshihiko Ozawa, Kazunori Anzai, Shunichi Fukuzumi, Nobuo Ikota

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 41　p. S66-S66　2006

An extremely long-lived charge-separated state of zinc tetraphenylporphyrin coordinated with pyridylnaphthalene-diimide

Kenji Saito, Yukiyasu Kashiwagi, Kei Ohkubo, Shunichi Fukuzumi

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 10　No. 12　p. 1371-1379　2006　Research paper (scientific journal)

Additivity rule holds in the hydrogen transfer reactivity of unsaturated fatty acids with a peroxyl radical: mechanistic insight into lipoxygenase

H Kitaguchi, K Ohkubo, S Ogo, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 9　p. 979-981　2006　Research paper (scientific journal)

Antichagasic activity of komaroviquinone is due to generation of reactive oxygen species catalyzed by Trypanosoma cruzi old yellow enzyme

N Uchiyama, Z Kabututu, BK Kubata, F Kiuchi, M Ito, J Nakajima-Shimada, T Aoki, K Ohkubo, S Fukuzumi, SK Martin, G Honda, Y Urade

ANTIMICROBIAL AGENTS AND CHEMOTHERAPY　Vol. 49　No. 12　p. 5123-5126　2005/12　Research paper (scientific journal)

Selective oxygenation of 4,4 '-dimethylbiphenyl with molecular oxygen, catalyzed by 9-phenyl-10-methylacridinium ion via photoinduced electron transfer

K Suga, K Ohkubo, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 109　No. 44　p. 10168-10175　2005/11　Research paper (scientific journal)

Effects of DNA on driving force dependence of photoinduced electron transfer from the excited state of tris(2,2-bipyridine)ruthenium(II) to intercalators in DNA distinction between intra- and inter-DNA pathways

S Fukuzumi, M Tanaka, M Nishimine, K Ohkubo

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY　Vol. 175　No. 2-3　p. 79-88　2005/10　Research paper (scientific journal)

Hydroxyl radical generation via photoreduction of a simple pyridine N-oxide by an NADH analogue.

Ikuo Nakanishi, Chiho Nishizawa, Kei Ohkubo, Keizo Takeshita, Kazuo T Suzuki, Toshihiko Ozawa, Sidney M Hecht, Masayuki Tanno, Shoko Sueyoshi, Naoki Miyata, Haruhiro Okuda, Shunichi Fukuzumi, Nobuo Ikota, Kiyoshi Fukuhara

Organic & biomolecular chemistry　Vol. 3　No. 18　p. 3263-5　2005/09/21　Research paper (scientific journal)

Efficient photocatalytic oxygenation of aromatic alkene to 1,2-dioxetane with oxygen via electron transfer

K Ohkubo, T Nanjo, S Fukuzumi

ORGANIC LETTERS　Vol. 7　No. 19　p. 4265-4268　2005/09　Research paper (scientific journal)

Charge separation in a nonfluorescent donor-acceptor dyad derived from boron dipyrromethene dye, leading to photocurrent generation

S Hattori, K Ohkubo, Y Urano, H Sunahara, T Nagano, Y Wada, NV Tkachenko, H Lemmetyinen, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 109　No. 32　p. 15368-15375　2005/08　Research paper (scientific journal)

Intramolecular hydrogen bonding in bisphenol developing agents for photothermographic application

H Akahori, K Morita, A Nishijima, T Mitsuhashi, K Ohkubo, S Fukuzumi

JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY　Vol. 49　No. 4　p. 381-388　2005/07　Research paper (scientific journal)

Electrochemistry of [(TMpyP)M-II](4+)(X-)(4) (X- = Cl- or BPh4-) and [(TMpyP)(MCl)-Cl-III](4+)(Cl-)(4) in N,N-dimethylformamide where M is one of 15 different metal ions

E Van Caemelbecke, A Derbin, P Hambright, R Garcia, A Doukkali, A Saoiabi, K Ohkubo, S Fukuzumi, KM Kadish

INORGANIC CHEMISTRY　Vol. 44　No. 11　p. 3789-3798　2005/05　Research paper (scientific journal)

Direct ESR detection of pentadienyl radicals and peroxyl radicals in lipid peroxidation: Mechanistic insight into regioselective oxygenation in lipoxygenases

H Kitaguchi, K Ohkubo, S Ogo, S Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 127　No. 18　p. 6605-6609　2005/05　Research paper (scientific journal)

Electron-transfer oxidation properties of DNA bases and DNA oligomers

S Fukuzumi, H Miyao, K Ohkubo, T Suenobu

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 109　No. 15　p. 3285-3294　2005/04

Electron-transfer mechanism in radical-scavenging reactions by a vitamin E model in a protic medium.

Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Hideko Kanazawa, Keiko Inami, Masataka Mochizuki, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Shinobu Itoh, Shunichi Fukuzumi, Nobuo Ikota

Organic & biomolecular chemistry　Vol. 3　No. 4　p. 626-9　2005/02/21　Research paper (scientific journal)

Electron-transfer oxidation of coenzyme B-12 model compounds and facile cleavage of the cobalt(IV) - Carbon bond via charge-transfer complexes with bases. A negative temperature dependence of the rates

K Ohkubo, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 109　No. 6　p. 1105-1113　2005/02　Research paper (scientific journal)

Scavenging reaction of cumylperoxyl radical by nitroxide radicals via electron transfer

Nakanishi, I, K Kawaguchi, K Ohkubo, T Kawashima, H Kanazawa, K Anzai, S Fukuzumi, T Ozawa, N Ikota

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 39　p. S38-S38　2005

Misleading effects of impurities derived from the extremely long-lived electron-transfer state of 9-mesityl-10-methylacridinium ion

K Ohkubo, H Kotani, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 36　p. 4520-4522　2005　Research paper (scientific journal)

Formation of a long-lived charge-separated state of a zinc phthalocyanine-perylenediimide dyad by complexation with magnesium ion

S Fukuzumi, K Ohkubo, J Ortiz, AM Gutierrez, F Fernandez-Lazaro, A Sastre-Santos

CHEMICAL COMMUNICATIONS　No. 30　p. 3814-3816　2005　Research paper (scientific journal)

Base-catalyzed radical-scavenging reactions by phenolic antioxidants

T Kawashima, Nakanishi, I, M Nyui, H Yakumaru, K Ohkubo, H Kanazawa, H Okuda, S Fukuzumi, T Ozawa, K Fukuhara, N Ikota

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 39　p. S33-S34　2005

Photocatalytic oxygenation of anthracenes and olefins with dioxygen via selective radical coupling using 9-mesityl-10-methylacridinium ion as an effective electron-transfer photocatalyst

H Kotani, K Ohkubo, S Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 126　No. 49　p. 15999-16006　2004/12　Research paper (scientific journal)

Remarkable accelerating effects of ammonium cations on electron-transfer reactions of quinones by hydrogen bonding with semiquinone radical anions

K Okamoto, K Ohkubo, KM Kadish, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 108　No. 47　p. 10405-10413　2004/11　Research paper (scientific journal)

Rational principles for modulating fluorescence properties of fluorescein

T Ueno, Y Urano, K Setsukinai, H Takakusa, H Kojima, K Kikuchi, K Ohkubo, S Fukuzumi, T Nagano

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 126　No. 43　p. 14079-14085　2004/11　Research paper (scientific journal)

Drastic changes in the lifetime and electron transfer and energy transfer reactivity of the triplet excited state of p-benzoquinone by complex formation with scandium ion salts

J Yuasa, K Ohkubo, DM Guldi, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 108　No. 40　p. 8333-8340　2004/10　Research paper (scientific journal)

DNA cleavage induced by thermal electron transfer from a dimeric NADH analogue to acridinium ions in the presence of oxygen

S Fukuzumi, K Yukimoto, K Ohkubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 126　No. 40　p. 12794-12795　2004/10　Research paper (scientific journal)

Photoelectrochemical properties of supramolecular composite of fullerene nanoclusters and 9-mesityl-10-carboxymethylacridinium ion on SnO2

T Hasobe, S Hattori, H Kotani, K Ohkubo, K Hosomizu, H Imahori, PV Kamat, S Fukuzumi

ORGANIC LETTERS　Vol. 6　No. 18　p. 3103-3106　2004/09　Research paper (scientific journal)

Enhanced energy and quantum efficiencies of a nanocrystalline photoelectrochemical cell sensitized with a donor - Acceptor dyad derived from fluorescein

S Hattori, T Hasobe, K Ohkubo, Y Urano, N Umezawa, T Nagano, Y Wada, S Yanagida, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 108　No. 39　p. 15200-15205　2004/09　Research paper (scientific journal)

EPR study on stable magnesium complexes of the phenoxyl radicals derived from a vitamin E model and its deuterated derivatives

Nakanishi, I, S Matsumoto, K Ohkubo, K Fukuhara, H Okuda, K Inami, M Mochizuki, T Ozawa, S Itoh, S Fukuzumi, N Ikota

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 77　No. 9　p. 1741-1744　2004/09　Research paper (scientific journal)

Effects of Metal Ions on the Stability of Oxygen and Nitrogen Radicals.

Nakanishi I, Kawashima T, Kanazawa K, Ohkubo K, Fukuhara K, Ozawa T, Fukuzumi S, Ikota N

J. Pharm. Soc. Jpn.　Vol. 124 (Suppl. 1)　2004/06　Research paper (scientific journal)

Substituent effects on the site of electron transfer during the first reduction for gold(III) porphyrins

ZP Ou, KM Kadish, E Wenbo, JG Shao, PJ Sintic, K Ohkubo, S Fukuzumi, MJ Crossley

INORGANIC CHEMISTRY　Vol. 43　No. 6　p. 2078-2086　2004/03　Research paper (scientific journal)

Quantitative evaluation of d-πinteraction in copper(I) complexes and control of copper(I)-dioxygen reactivity

T.Osako, Y.Tachi, Matsumi Doe, M.Shiro, K.Ohkubo, S.Fukuzumi, S.Itoh

Chemistry―A European Journal　Vol. 30　p. 387-399　2004/02

Electron-transfer state of 9-mesityl-10-methylacridinium ion with a much longer lifetime and higher energy than that of the natural photosynthetic reaction center

S Fukuzumi, H Kotani, K Ohkubo, S Ogo, NV Tkachenko, H Lemmetyinen

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 126　No. 6　p. 1600-1601　2004/02　Research paper (scientific journal)

Intramolecular hydrogen bonding of oxidation intermediates of bisphenol derivatives in relation to photothermographic activity in silver salt photothermographic systems

H Akahori, K Morita, A Nishijima, T Mitsuhashi, K Ohkubo, S Fukuzumi

AGX2004: INTERNATIONAL SYMPOSIUM ON SILVER HALIDE TECHNOLOGY　p. 17-21　2004　Research paper (international conference proceedings)

pi-Complex formation in electron-transfer reactions of porphyrins

S Fukuzumi, T Hasobe, K Ohkubo, MJ Crossley, PV Kamat, H Imahori

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 8　No. 1-3　p. 191-200　2004　Research paper (scientific journal)

Spectroelectrochemical and ESR studies of highly substituted copper corroles

ZP Ou, JG Shao, H Zhao, K Ohkubo, IH Wasbotten, S Fukuzumi, A Ghosh, KM Kadish

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 8　No. 10　p. 1236-1247　2004　Research paper (scientific journal)

Solvent effect on the mechanism of radical-scavenging reactions of a vitamin E analogue

Nakanishi, I, T Kawashinia, K Ohkubo, H Kanazawa, H Okuda, T Ozawa, S Fukuzumi, K Fukuhara, N Ikota

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 37　p. S39-S40　2004

Quantitative evaluation of d-pi interaction in copper(I) complexes and control of copper(I)-dioxygen reactivity

T Osako, Y Tachi, M Doe, M Shiro, K Ohkubo, S Fukuzumi, S Itoh

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 10　No. 1　p. 237-246　2004/01　Research paper (scientific journal)

Production of an ultra-long-lived charge-separated state in a zinc chlorin-C-60 dyad by one-step photoinduced electron transfer

K Ohkubo, H Kotani, JG Shao, ZP Ou, KM Kadish, GL Li, RK Pandey, M Fujitsuka, O Ito, H Imahori, S Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 43　No. 7　p. 853-856　2004　Research paper (scientific journal)

ESR study on stable magnesium complexes of the phenoxyl radicals derived from a vitamin E model and its deuterated derivatives

Nakanishi, I, S Matsumoto, K Ohkubo, K Fukuhara, H Okuda, K Inami, M Mochizuki, S Itoh, S Fukuzumi, N Ikota, T Ozawa

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 37　p. S40-S40　2004

A planar catechin analogue having a more negative oxidation potential than (+)-catechin as an electron transfer antioxidant against a peroxyl radical.

Ikuo Nakanishi, Kei Ohkubo, Kentaro Miyazaki, Wataru Hakamata, Shiro Urano, Toshihiko Ozawa, Haruhiro Okuda, Shunichi Fukuzumi, Nobuo Ikota, Kiyoshi Fukuhara

Chemical research in toxicology　Vol. 17　No. 1　p. 26-31　2004/01　Research paper (scientific journal)

Metal-centered photoinduced electron transfer reduction of a gold(III) porphyrin cation linked with a zinc porphyrin to produce a long-lived charge-separated state in nonpolar solvents

S Fukuzumi, K Ohkubo, WB E, ZP Ou, JG Shao, KM Kadish, JA Hutchison, KP Ghiggino, PJ Sintic, MJ Crossley

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 125　No. 49　p. 14984-14985　2003/12　Research paper (scientific journal)

Fluorinated photosensitizers: synthesis, photophysical, electrochemical, intracellular localization, in vitro photosensitizing efficacy and determination of tumor-uptake by F-19 in vivo NMR spectroscopy

SK Pandey, AL Gryshuk, A Graham, K Ohkubo, S Fukuzumi, MP Dobhal, G Zheng, ZP Ou, RQ Zhan, KM Kadish, A Oseroff, S Ramaprasad, RK Pandey

TETRAHEDRON　Vol. 59　No. 50　p. 10059-10073　2003/12　Research paper (scientific journal)

Driving force dependence of photoinduced electron transfer dynamics of intercalated molecules in DNA

S Fukuzumi, M Nishimine, K Ohkubo, NV Tkachenko, H Lemmetyinen

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 107　No. 45　p. 12511-12518　2003/11　Research paper (scientific journal)

Ultrafast photodynamics of exciplex formation and photoinduced electron transfer in porphyrin-fullerene dyads linked at close proximity

NV Tkachenko, H Lemmetyinen, J Sonoda, K Ohkubo, T Sato, H Imahori, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 107　No. 42　p. 8834-8844　2003/10　Research paper (scientific journal)

Selective oxygenation of ring-substituted toluenes with electron-donating and-withdrawing substituents by molecular oxygen via photoinduced electron transfer

K Ohkubo, K Suga, K Morikawa, S Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 125　No. 42　p. 12850-12859　2003/10　Research paper (scientific journal)

105(P-46) Trypanocidal mechanism of quinone-type diterpenes

Uchiyama Nahoko, Kiuchi Fumiyuki, Ito Michiho, Honda Gisho, Kubata Bruno K., Kabututu Zakayi, Urade Yoshihiro, Ohkubo Kei, Fukuzumi Shunichi, Shimada Junko, Tsubouchi Akiko, Aoki Takashi, Kodzhimatov Olimjon K., Ashurmetov Ozodbek

Symposium on the Chemistry of Natural Products, symposium papers　No. 45　p. 617-621　2003/09/01

Role of electron-transfer processes in reactions of diarylcarbenium ions and related quinone methides with nucleophiles

AR Ofial, K Ohkubo, S Fukuzumi, R Lucius, H Mayr

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 125　No. 36　p. 10906-10912　2003/09　Research paper (scientific journal)

Oxidation mechanism of phenols by dicopper-dioxygen (Cu-2/O-2) complexes

T Osako, K Ohkubo, M Taki, Y Tachi, S Fukuzumi, S Itoh

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 125　No. 36　p. 11027-11033　2003/09　Research paper (scientific journal)

Rational design principle for modulating fluorescence properties of fluorescein-based probes by photoinduced electron transfer

T Miura, Y Urano, K Tanaka, T Nagano, K Ohkubo, S Fukuzumi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 125　No. 28　p. 8666-8671　2003/07　Research paper (scientific journal)

Oxidation mechanism of phenols by dicopper-dioxygen (Cu-2/O-2) complexe mu

T Osako, K Ohkubo, M Taki, Y Tachi, S Fukuzumi, S Itoh

JOURNAL OF INORGANIC BIOCHEMISTRY　Vol. 96　No. 1　p. 207-207　2003/07

Long-lived charge-separated state produced by photoinduced electron transfer in a zinc imidazoporphyrin-C-60 dyad

Y Kashiwagi, K Ohkubo, JA McDonald, IM Blake, MJ Crossley, Y Araki, O Ito, H Imahori, S Fukuzumi

ORGANIC LETTERS　Vol. 5　No. 15　p. 2719-2721　2003/07　Research paper (scientific journal)

Diels-Alder reactions of anthracenes with dienophiles via photoinduced electron transfer

S Fukuzumi, T Okamoto, K Ohkubo

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 107　No. 28　p. 5412-5418　2003/07　Research paper (scientific journal)

Quantitative evaluation of Lewis acidity of metal ions with different ligands and counterions in relation to the promoting effects of Lewis acids on electron transfer reduction of oxygen

K Ohkubo, SC Menon, A Orita, J Otera, S Fukuzumi

JOURNAL OF ORGANIC CHEMISTRY　Vol. 68　No. 12　p. 4720-4726　2003/06　Research paper (scientific journal)

Oxygenation of alpha-methylstyrene with molecular oxygen, catalyzed by 10-methylacridinium ion via photoinduced electron transfer

K Suga, K Ohkubo, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 107　No. 22　p. 4339-4346　2003/06　Research paper (scientific journal)

Efficient radical scavenging ability of artepillin C, a major component of Brazilian propolis, and the mechanism.

Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Kentaro Miyazaki, Haruko Yakumaru, Shiro Urano, Haruhiro Okuda, Jun-Ichi Ueda, Toshihiko Ozawa, Kiyoshi Fukuhara, Shunichi Fukuzumi, Hideko Nagasawa, Hitoshi Hori, Nobuo Ikota

Organic & biomolecular chemistry　Vol. 1　No. 9　p. 1452-4　2003/05/07　Research paper (scientific journal)

Driving force dependence of intermolecular electron-transfer reactions of fullerenes

S Fukuzumi, K Ohkubo, H Imahori, DM Guldi

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 9　No. 7　p. 1585-1593　2003/04

Enhancement of light harvesting and photocurrent generation by ITO electrodes modified with meso,meso-linked porphyrin oligomers

T Hasobe, H Imahori, H Yamada, T Sato, K Ohkubo, S Fukuzumi

NANO LETTERS　Vol. 3　No. 3　p. 409-412　2003/03　Research paper (scientific journal)

Electron transfer properties of bisphenol derivatives in relation to their developing properties in silver salt photothermographic systems

H Akahori, K Morita, A Nishijima, T Mitsuhashi, K Ohkubo, S Fukuzumi

JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY　Vol. 47　No. 2　p. 124-132　2003/03　Research paper (scientific journal)

Electron transfer reduction of fluorofullerenes, C60F18 and C-3 C60F36

K Ohkubo, R Taylor, OV Boltalina, S Fukuzumi

FULLERENES AND NANOTUBES: THE BUILDING BLOCKS OF NEXT GENERATION NANODEVICES　Vol. 2003　No. 15　p. 20-30　2003　Research paper (international conference proceedings)

Structure and photoelectrochemical properties of ITO electrodes modified with self-assembled monolayers of meso, meso-linked porphyrin oligomers

T Hasobe, H Imahori, K Ohkubo, H Yamada, T Sato, Y Nishimura, Yamazaki, I, S Fukuzumi

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 7　No. 4-5　p. 296-312　2003　Research paper (scientific journal)

Reversed effects of DNA on hydride transfer and electron transfer reactions of acridinium and quinolinium ions

M Nishimine, K Ohkubo, T Komori, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 15　p. 1886-1887　2003　Research paper (scientific journal)

Remarkable effects of counter ions on scandium ion-promoted electron transfer reactions

J Yuasa, T Suenobu, K Ohkubo, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 9　p. 1070-1071　2003　Research paper (scientific journal)

Oxidation potentials of antioxidative flavonoids and the radical-scavenging abilities

Nakanishi, I, K Miyazaki, K Ohkubo, S Urano, J Ueda, W Hakamata, H Okuda, T Ozawa, S Fukuzumi, K Fukuhara, N Ikota

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 35　p. S43-S43　2003

Fast self-exchange electron transfer and delocalization of unpaired electron between zinc porphyrin radical cations and zinc porphyrins

S Fukuzumi, T Hasobe, Y Endo, K Ohkubo, H Imahori

JOURNAL OF PORPHYRINS AND PHTHALOCYANINES　Vol. 7　No. 4-5　p. 328-336　2003　Research paper (scientific journal)

A ruthenium pterin complex showing proton-coupled electron transfer: Synthesis and characterization

T Kojima, T Sakamoto, Y Matsuda, K Ohkubo, S Fukuzumi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 42　No. 40　p. 4951-4954　2003　Research paper (scientific journal)

A planar catechin analogue as a promising antioxidant with reduced prooxidant activity.

Kiyoshi Fukuhara, Ikuo Nakanishi, Tomokazu Shimada, Kei Ohkubo, Kentaro Miyazaki, Wataru Hakamata, Shiro Urano, Toshihiko Ozawa, Haruhiro Okuda, Naoki Miyata, Nobuo Ikota, Shunichi Fukuzumi

Chemical research in toxicology　Vol. 16　No. 1　p. 81-6　2003/01　Research paper (scientific journal)

Small reorganization energy of intramolecular electron transfer in fullerene-based dyads with short linkage

K Ohkubo, H Imahori, JG Shao, ZP Ou, KM Kadish, YH Chen, G Zheng, RK Pandey, M Fujitsuka, O Ito, S Fukuzumi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 106　No. 46　p. 10991-10998　2002/11　Research paper (scientific journal)

Metal ion-catalyzed Diels-Alder and hydride transfer reactions. Catalysis of metal ions in the electron-transfer step

S Fukuzumi, K Ohkubo, T Okamoto

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 124　No. 47　p. 14147-14155　2002/11　Research paper (scientific journal)

Effects of metal ions distinguishing between one-step hydrogen- and electron-transfer mechanisms for the radical-scavenging reaction of (+)-catechin

Nakanishi, I, K Miyazaki, T Shimada, K Ohkubo, S Urano, N Ikota, T Ozawa, S Fukuzumi, K Fukuhara

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 106　No. 46　p. 11123-11126　2002/11　Research paper (scientific journal)

A key role for old yellow enzyme in the metabolism of drugs by Trypanosoma cruzi

BK Kubata, Z Kabututu, T Nozaki, CJ Munday, S Fukuzumi, K Ohkubo, M Lazarus, T Maruyama, SK Martin, M Duszenko, Y Urade

JOURNAL OF EXPERIMENTAL MEDICINE　Vol. 196　No. 9　p. 1241-1251　2002/11　Research paper (scientific journal)

Fluorescence maxima of 10-methylacridone - Metal ion salt complexes: A convenient and quantitative measure of Lewis acidity of metal ion salts

S Fukuzumi, K Ohkubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 124　No. 35　p. 10270-10271　2002/09　Research paper (scientific journal)

Photophysical and electrochemical properties of new bacteriochlorins and characterization of radical cation and radical anion species

S Fukuzumi, K Ohkubo, YH Chen, RK Pandey, RQ Zhan, JG Shao, KM Kadish

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 106　No. 20　p. 5105-5113　2002/05　Research paper (scientific journal)

Formation of superoxide-metal ion complexes and the electron transfer catalysis

S Fukuzumi, H Ohtsu, K Ohkubo, S Itoh, H Imahori

COORDINATION CHEMISTRY REVIEWS　Vol. 226　No. 1-2　p. 71-80　2002/03　Research paper (scientific journal)

DNA cleavage via superoxide anion formed in photoinduced electron transfer from NADH to gamma-cyclodextrin-bicapped C-60 in an oxygen-saturated aqueous solution

Nakanishi, I, S Fukuzumi, T Konishi, K Ohkubo, M Fujitsuka, O Ito, N Miyata

JOURNAL OF PHYSICAL CHEMISTRY B　Vol. 106　No. 9　p. 2372-2380　2002/03　Research paper (scientific journal)

Evidence that gold(III) porphyrins are not electrochemically inert: facile generation of gold(II) 5,10,15,20-tetrakis(3,5-di-tert-butylphenyl)porphyrin

KM Kadish, E Wenbo, ZP Ou, JG Shao, PJ Sintic, K Ohkubo, S Fukuzumi, MJ Crossley

CHEMICAL COMMUNICATIONS　No. 4　p. 356-357　2002　Research paper (scientific journal)

Electron-transfer mechanism in radical-scavenging reactions of flavonoids

Nakanishi, I, K Miyazaki, T Shimada, K Ohkubo, W Hakamata, S Urano, H Okuda, S Fukuzumi, K Fukuhara, N Ikota, T Ozawa

FREE RADICAL BIOLOGY AND MEDICINE　Vol. 33　p. S308-S309　2002

Electron transfer reduction of a highly electron-deficient fullerene, C60F18

K Ohkubo, R Taylor, OV Boltalina, S Ogo, S Fukuzumi

CHEMICAL COMMUNICATIONS　No. 17　p. 1952-1953　2002　Research paper (scientific journal)

Effects of magnesium ion on kinetic stability and spin distribution of phenoxyl radical derived from a vitamin E analogue: mechanistic insight into antioxidative hydrogen-transfer reaction of vitamin E

Nakanishi, I, K Fukuhara, T Shimada, K Ohkubo, Y Iizuka, K Inami, M Mochizuki, S Urano, S Itoh, N Miyata, S Fukuzumi

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2　No. 9　p. 1520-1524　2002　Research paper (scientific journal)

Direct detection of superoxide anion generated in C-60-photosensitized oxidation of NADH and an analogue by molecular oxygen

Nakanishi, I, K Ohkubo, S Fujita, S Fukuzumi, T Konishi, M Fujitsuka, O Ito, N Miyata

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2　No. 11　p. 1829-1833　2002　Research paper (scientific journal)

Superoxide anion generation via electron-transfer oxidation of catechin dianion by molecular oxygen in an aprotic medium

Nakanishi, I, K Fukuhara, K Ohkubo, T Shimada, H Kansui, M Kurihara, S Urano, S Fukuzumi, N Miyata

CHEMISTRY LETTERS　No. 11　p. 1152-1153　2001/11　Research paper (scientific journal)

Efficient catalysis of rare-earth metal ions in photoinduced electron-transfer oxidation of benzyl alcohols by a flavin analogue

S Fukuzumi, K Yasui, T Suenobu, K Ohkubo, M Fujitsuka, O Ito

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 105　No. 46　p. 10501-10510　2001/11

Quantitative evaluation of Lewis acidity of organotin compounds and the catalytic reactivity in electron transfer

K Ohkubo, T Suenobu, H Imahori, A Orita, J Otera, S Fukuzumi

CHEMISTRY LETTERS　No. 10　p. 978-979　2001/10　Research paper (scientific journal)

Photochemical and electrochemical properties of zinc Chlorin-C-60 dyad as compared to corresponding free-base chlorin-C-60, free-base Porphyrin-C-60, and zinc porphyrin-C-60 dyads

S Fukuzumi, K Ohkubo, H Imahori, JG Shao, ZP Ou, G Zheng, YH Chen, RK Pandey, M Fujitsuka, O Ito, KM Kadish

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 123　No. 43　p. 10676-10683　2001/10　Research paper (scientific journal)

Photoalkylation of 10-alkylacridinium ion via a charge-shift type of photoinduced electron transfer controlled by solvent polarity

S Fukuzumi, K Ohkubo, T Suenobu, K Kato, M Fujitsuka, O Ito

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 123　No. 35　p. 8459-8467　2001/09　Research paper (scientific journal)

Regioreversed thermal and photochemical education of 10-methylacridinium and 1-methylquinolinium ions by organosilanes and oraganostannanes

S Fukuzumi, M Fujita, S Noura, K Ohkubo, T Suenobu, Y Araki, O Ito

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 105　No. 10　p. 1857-1868　2001/03　Research paper (scientific journal)

Photochemical generation of cyclopentadienyliron dicarbonyl anion by a nicotinamide adenine dinucleotide dimer analogue

S Fukuzumi, K Ohkubo, M Fujitsuka, O Ito, MC Teichmann, E Maisonhaute, C Amatore

INORGANIC CHEMISTRY　Vol. 40　No. 6　p. 1213-1219　2001/03　Research paper (scientific journal)

Comparison between electron transfer and nucleophilic reactivities of ketene silyl acetals with cationic electrophiles

S Fukuzumi, K Ohkubo, J Otera

JOURNAL OF ORGANIC CHEMISTRY　Vol. 66　No. 4　p. 1450-1454　2001/02　Research paper (scientific journal)

Photochemical and electrochemical properties of zinc Chlorin-C-60 dyad as compared to corresponding Porphyrin-C-60 dyads

S Fukuzumi, K Ohkubo, H Imahori, JG Shao, ZP Ou, G Zheng, YH Chen, RK Pandey, M Fujitsuka, O Ito, KM Kadish

FULLERENES FOR THE NEW MILLENNIUM　Vol. 2000　No. 11　p. 60-71　2001　Research paper (international conference proceedings)

DNA cleavage via electron transfer from NADH to molecular oxygen photosensitized by gamma-cyclodextrin-bicapped C-60

Nakanishi, I, S Fukuzumi, T Konishi, K Ohkubo, M Fujitsuka, O Ito, N Miyata

FULLERENES FOR THE NEW MILLENNIUM　Vol. 2000　No. 11　p. 138-151　2001　Research paper (international conference proceedings)

Quantitative evaluation of Lewis acidity of metal ions derived from the g values of ESR spectra of superoxide: Metal ion complexes in relation to the promoting effects in electron transfer reactions

S Fukuzumi, K Ohkubo

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 6　No. 24　p. 4532-4535　2000/12　Research paper (scientific journal)

CO sensing and regulation of gene expression by the transcriptional activator CooA

S Aono, Y Honma, K Ohkubo, T Tawara, T Kamiya, H Nakajima

JOURNAL OF INORGANIC BIOCHEMISTRY　Vol. 82　No. 1-4　p. 51-56　2000/11

100% selective oxygenation of p-xylene to p-tolualdehyde via photoinduced electron transfer

K Ohkubo, S Fukuzumi

ORGANIC LETTERS　Vol. 2　No. 23　p. 3647-3650　2000/11　Research paper (scientific journal)

Electron Transfer Disproportionation of C60 Radical Anion Catalyzed by Metal Ions

Shunichi Fukuzumi, Kei Ohkubo, Tomoyoshi Suenobu, Osamu Ito, Mamoru Fujitsuka, Jianguo Shao, Karl M. Kadish

Fullerenes; Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials, Electrochemical Society Proceedings　2000/09　Research paper (international conference proceedings)

Hydride transfer from 9-substituted 10-methyl-9,10-dihydroacridines to hydride accepters via charge-transfer complexes and sequential electron-proton-electron transfer. A negative temperature dependence of the rates

S Fukuzumi, K Ohkubo, Y Tokuda, T Suenobu

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 122　No. 18　p. 4286-4294　2000/05　Research paper (scientific journal)

Photoalkylation of C-60 by alkylcobalt(III) complexes

K Ohkubo, S Fukuzumi

INORGANIC REACTION MECHANISMS　Vol. 2　No. 1-2　p. 147-153　2000　Research paper (scientific journal)

A novel versatility of catalase I as a dioxygenase for indole-ring-opening dioxygenation

T Sagawa, T Yomo, S Tsugawa, Y Takeda, H Ihara, EK Mitamura, Urabe, I, K Ohkubo

CHEMISTRY LETTERS　No. 4　p. 339-340　1999/04　Research paper (scientific journal)

Redox-controlled ligand exchange of the heme in the CO-sensing transcriptional activator CooA

S Aono, K Ohkubo, T Matsuo, H Nakajima

JOURNAL OF BIOLOGICAL CHEMISTRY　Vol. 273　No. 40　p. 25757-25764　1998/10　Research paper (scientific journal)

Heme environmental structure of CooA is modulated by the target DNA binding

T Uchida, H Ishikawa, S Takahashi, K Ishimori, Morishima, I, K Ohkubo, H Nakajima, S Aono

JOURNAL OF BIOLOGICAL CHEMISTRY　Vol. 273　No. 32　p. 19988-19992　1998/08　Research paper (scientific journal)

Single transduction in the transcriptional activator CooA containing a heme-based CO sensor: Isolation of a dominant positive mutant which is active as the transcriptional activator even in the absence of CO

S Aono, T Matsuo, T Shimono, K Ohkubo, H Takasaki, H Nakajima

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS　Vol. 240　No. 3　p. 783-786　1997/11　Research paper (scientific journal)

METALLOPORPHYRIN-CATALYZED HYDROGENATION OF ALPHA,BETA-UNSATURATED ESTERS

S SAKAKI, T SAGARA, T ARAI, T KOJIMA, T OGATA, K OHKUBO

JOURNAL OF MOLECULAR CATALYSIS　Vol. 75　No. 2　p. L33-L37　1992/09　Research paper (scientific journal)