Using an aromatic linker to optimize charge-resonance states, photodimerization and reversibility in covalent anthracene dimers

Kevin Lam, Robert J. Dillon, Abel Carreras, Tomohiko Nishiuchi, Takashi Kubo, Rabih O. Al-Kaysi, David Casanova, Christopher J. Bardeen

Physical Chemistry Chemical Physics　2025/02　Research paper (scientific journal)

Synthesis, Chiroptical Properties, and Absolute Configuration Determination of Phenyl-4-pyridyl-2,5-dipyrimidinylmethane

Kouzou Matsumoto, Rina Tanaka, Kaori Miki, Akihito Konishi, Hiroyuki Kurata, Takashi Kubo, Gennaro Pescitelli, Koichi Matsuo, Tatsuo Nehira

Asian Journal of Organic Chemistry　2024/11/08　Research paper (scientific journal)

Synthesis and reactivity of the di(9-anthryl)methyl radical

Tomohiko Nishiuchi, Kazuma Takahashi, Yuta Makihara, Takashi Kubo

Beilstein Journal of Organic Chemistry　Vol. 20　p. 2254-2260　2024/09/05　Research paper (scientific journal)

Long carbon–carbon bonds and beyond

Masaya Kishimoto, Takashi Kubo

Chemical Physics Reviews　2024/09/01　Research paper (scientific journal)

Introduction: Persistent and Stable Organic Radicals

Takashi Kubo, Manabu Abe

Chemical Reviews　Vol. 124　No. 8　p. 4541-4542　2024/04/24　Research paper (scientific journal)

On-Surface Synthesis of Silole and Disila-Cyclooctene Derivatives

Kewei Sun, Lauri Kurki, Orlando J. Silveira, Tomohiko Nishiuchi, Takashi Kubo, Adam S. Foster, Shigeki Kawai

Angewandte Chemie International Edition　2024/02/28　Research paper (scientific journal)

Local probe-induced structural isomerization in a one-dimensional molecular array

Shigeki Kawai, Orlando J. Silveira, Lauri Kurki, Zhangyu Yuan, Tomohiko Nishiuchi, Takuya Kodama, Kewei Sun, Oscar Custance, Jose L. Lado, Takashi Kubo, Adam S. Foster

Nature Communications　Vol. 14　No. 1　2023/11/25　Research paper (scientific journal)

Synthesis and structural evaluation of closed-shell folded and open-shell twisted hexabenzo[5.6.7]quinarene

Tomohiko Nishiuchi, Kazuyuki Uchida, Takashi Kubo

Chemical Communications　2023/05　Research paper (scientific journal)

Enhancing NIR-to-visible photon upconversion in cast solid by introducing bulky substituents in rubrene and by suppressing back energy transfer

Akane Sawa, Shota Shimada, Neeti Tripathi, Claire Heck, Hiroaki Tachibana, Emiko Koyama, Toshiko Mizokuro, Yasukazu Hirao, Takashi Kubo, Naoto Tamai, Daiki Kuzuhara, Hiroko Yamada, Kenji Kamada

Journal of Materials Chemistry C　2023/05　Research paper (scientific journal)

Deprotonation-Induced and Ion-Pairing-Modulated Diradical Properties of Partially Conjugated Pyrrole–Quinone Conjunction

Shinya Sugiura, Takashi Kubo, Yohei Haketa, Yuta Hori, Yasuteru Shigeta, Hayato Sakai, Taku Hasobe, Hiromitsu Maeda

Journal of the American Chemical Society　Vol. 145　No. 14　p. 8122-8129　2023/03/28　Research paper (scientific journal)

Synthesis and Properties of a Through-Space Interacting Diradicaloid

Takuya Kodama, Yasukazu Hirao, Takashi Kubo

Precision Chemistry　2023/03/14　Research paper (scientific journal)

Closed-shell and open-shell dual nature of singlet diradical compounds

Takashi Kubo

Pure and Applied Chemistry　2023/03/07　Research paper (scientific journal)

Stacked antiaromaticity in the π‐congested space between the aromatic rings in the anthracene dime

Tomohiko Nishiuchi, Yuta Makihara, Ryohei Kishi, Hiroyasu Sato, Takashi Kubo

Journal of Physical Organic Chemistry　2022/10/24　Research paper (scientific journal)

Synthesis, Properties, and Intermolecular Interactions in the Solid States of π-Congested X-Shaped 1,2,4,5-Tetra(9-anthryl)benzenes

Tomohiko Nishiuchi, Shino Takeuchi, Yuta Makihara, Ryo Kimura, Shohei Saito, Hiroyasu Sato, Takashi Kubo

Bulletin of the Chemical Society of Japan　2022/10/07　Research paper (scientific journal)

Synergistic Enhancement of Hydrogen-Bonding and Charge-Transfer Interactions in a Crystal of an Anthranol–Acridine Dyad Comprised of a Hydrogen-Bonded Chain Aggregate

Yasukazu Hirao, Honami Inobe, Katsuma Hosoi, Takashi Kubo

The Journal of Physical Chemistry C　2022/06/22　Research paper (scientific journal)

Tunable Solid‐State Thermochromism: Alkyl Chain Length‐Dependent Conformational Isomerization of Bianthrones

Yasukazu Hirao, Yosuke Hamamoto, Takashi Kubo

Chemistry – An Asian Journal　2022/04/27　Research paper (scientific journal)

Synthesis of π-Extended Thiele’s and Chichibabin’s Hydrocarbons and Effect of the π-Congestion on Conformations and Electronic States

Tomohiko Nishiuchi, Seito Aibara, Hiroyasu Sato, Takashi Kubo

Journal of the American Chemical Society　2022/04/27　Research paper (scientific journal)

Sterically Frustrated Aromatic Enes with Various Colors Originating from Multiple Folded and Twisted Conformations in Crystal Polymorphs**

Tomohiko Nishiuchi, Seito Aibara, Takuya Yamakado, Ryo Kimura, Shohei Saito, Hiroyasu Sato, Takashi Kubo

Chemistry – A European Journal　2022/04/08　Research paper (scientific journal)

Synthesis, Properties and Chemical Modification of a Persistent Triisopropylsilylethynyl Substituted Tri(9-anthryl)methyl Radical

Tomohiko Nishiuchi, Daisuke Ishii, Seito Aibara, Hiroyasu Sato, Takashi Kubo

Chemical Communications　2022/02/11　Research paper (scientific journal)

A strong hydride donating, acid stable and reusable 1,4-dihydropyridine for selective aldimine and aldehyde reductions

Yasukazu Hirao, Hajime Eto, Mitsuru Teraoka, Takashi Kubo

Organic & Biomolecular Chemistry　2022/02/03　Research paper (scientific journal)

Molecular and Spin Structures of a Through-Space Conjugated Triradical System

Takuya Kodama, Mitsuya Aoba, Yasukazu Hirao, Samara Medina Rivero, Juan Casado, Takashi Kubo

Angewandte Chemie International Edition　2022/01/27　Research paper (scientific journal)

Mechanism and Kinetics of Fluorescence Quenching of Fluorene-Endcapped Butatriene: A Microspectroscopic Study of the Discrete State Constructed in Microcrystals

Yasukazu Hirao, Keiji Ihara, Yukihide Ishibashi, Elisha Gabrielle Tiu, Tsuyoshi Asahi, Takashi Kubo

The Journal of Physical Chemistry C　Vol. 126　No. 2　p. 1196-1203　2022/01/20　Research paper (scientific journal)

1,2,3-Tri(9-anthryl)benzene: Photophysical Properties and Solid-State Intermolecular Interactions of Radially Arranged, Congested Aromatic π‐Planes**

Tomohiko Nishiuchi, Hikaru Sotome, Kazuto Shimizu, Hiroshi Miyasaka, Takashi Kubo

Chemistry – A European Journal　2022/01/03　Research paper (scientific journal)

Optical nature of non‐substituted triphenylmethyl cation: Crystalline state emission, thermochromism, and phosphorescence

Tomohiko Nishiuchi, Hikaru Sotome, Risa Fukuuchi, Kenji Kamada, Hiroshi Miyasaka, Takashi Kubo

Aggregate　2021/09/24　Research paper (scientific journal)

Spin–Spin Interactions in One‐Dimensional Assemblies of a Cumulene‐Based Singlet Biradical

Yasukazu Hirao, Yoko Daifuku, Keiji Ihara, Takashi Kubo

Angewandte Chemie International Edition　Vol. 60　No. 39　p. 21319-21326　2021/09/20　Research paper (scientific journal)

Syntheses and Properties of Open-Shell π-Conjugated Molecules

Takashi Kubo

Bulletin of the Chemical Society of Japan　Vol. 94　No. 9　p. 2235-2244　2021/09/15　Research paper (scientific journal)

Long Carbon–Carbon Bonding beyond 2 Å in Tris(9-fluorenylidene)methane

Takashi Kubo, Yuki Suga, Daisuke Hashizume, Hiroki Suzuki, Tatsuya Miyamoto, Hiroshi Okamoto, Ryohei Kishi, Masayoshi Nakano

Journal of the American Chemical Society　Vol. 143　No. 35　p. 14360-14366　2021/09/08　Research paper (scientific journal)

Biradicaloid Behavior of a Twisted Double Bond

Yosuke Hamamoto, Yasukazu Hirao, Takashi Kubo

The Journal of Physical Chemistry Letters　Vol. 12　No. 19　p. 4729-4734　2021/05/20　Research paper (scientific journal)

Synthesis of Anthracene‐Based Cyclic π‐Clusters and Elucidation of their Properties Originating from Congested Aromatic Planes

Tomohiko Nishiuchi, Kazuki Kisaka, Takashi Kubo

Angewandte Chemie International Edition　Vol. 60　No. 10　p. 5400-5406　2021/03　Research paper (scientific journal)

Low-Temperature Removal of Dissociated Bromine by Silicon Atoms for an On-Surface Ullmann Reaction

Kewei Sun, Tomohiko Nishiuchi, Keisuke Sahara, Takashi Kubo, Adam S. Foster, Shigeki Kawai

The Journal of Physical Chemistry C　Vol. 124　No. 36　p. 19675-19680　2020/09/10　Research paper (scientific journal)

Chiral Tetraarylmethane Derivative with Metal‐Coordinating Ability

Kouzou Matsumoto, Kaori Miki, Rina Tanaka, Takahiro Matsuda, Tatsuo Nehira, Yasukazu Hirao, Hiroyuki Kurata, Gennaro Pescitelli, Takashi Kubo

Asian Journal of Organic Chemistry　Vol. 9　No. 4　p. 652-659　2020/04　Research paper (scientific journal)

Duality of Reactivity of a Biradicaloid Compound with an o-Quinodimethane Scaffold

Keisuke Sahara, Manabu Abe, Hendrik Zipse, Takashi Kubo

Journal of the American Chemical Society　Vol. 142　No. 11　p. 5408-5418　2020/03/18　Research paper (scientific journal)

Synthesis and Electronic Properties of the 1-Naphthoxyl Radical

Yasukazu Hirao, Miki Marutani, Naoki Tachibana, Takashi Kubo

Chemistry Letters　Vol. 49　No. 2　p. 153-155　2020/02/05　Research paper (scientific journal)

Three-dimensional graphene nanoribbons as a framework for molecular assembly and local probe chemistry

Shigeki Kawai, Ondřej Krejčí, Tomohiko Nishiuchi, Keisuke Sahara, Takuya Kodama, Rémy Pawlak, Ernst Meyer, Takashi Kubo, Adam S. Foster

Science Advances　Vol. 6　No. 9　p. eaay8913-eaay8913　2020/02　Research paper (scientific journal)

Switchable Conformational Isomerization of an Overcrowded Tristricyclic Aromatic Ene

Tomohiko Nishiuchi, Ryuoh Ito, Erik Stratmann, Takashi Kubo

The Journal of Organic Chemistry　Vol. 85　No. 1　p. 179-186　2020/01/03　Research paper (scientific journal)

Formation of Perylenes by Oxidative Dimerization of Naphthalenes Bearing Radical Sources

Yasukazu Hirao, Tomoki Okuda, Yosuke Hamamoto, Takashi Kubo

ChemPlusChem　Vol. 85　No. 1　p. 101-109　2020/01　Research paper (scientific journal)

Interaction of the Dihydropyridine/Pyridinium Redox Pair Fixed into a V-Shaped Conformation

Yasukazu Hirao, Mitsuru Teraoka, Takashi Kubo

HETEROCYCLES　Vol. 98　No. 10　p. 1345-1345　2019/10　Research paper (scientific journal)

Self-Assembly of 1-Deazahypoxanthine: Cooperativity of Hydrogen-Bonding and Stacking Interactions

Yasukazu Hirao, Shiori Seo, Takashi Kubo

The Journal of Physical Chemistry C　Vol. 123　No. 34　p. 20928-20935　2019/08/29　Research paper (scientific journal)

Redox/pH Dual Stimuli‐Responsive Acridine Spiropyran

Yasukazu Hirao, Toshiaki Taniguchi, Mitsuru Teraoka, Takashi Kubo

Asian Journal of Organic Chemistry　Vol. 8　No. 6　p. 863-866　2019/06　Research paper (scientific journal)

Synthesis and Electronic Properties of Triperyleno[3.3.3]Propellanes: Towards Two‐Dimensional Electronic Structures

Takuya Kodama, Shogo Miyazaki, Takashi Kubo

ChemPlusChem　Vol. 84　No. 6　p. 599-602　2019/06　Research paper (scientific journal)

Solvent viscosity-dependent isomerization equilibrium of tetramethoxy-substituted bianthrone

Yasukazu Hirao, Yosuke Hamamoto, Nobuhiro Nagamachi, Takashi Kubo

Physical Chemistry Chemical Physics　Vol. 21　No. 23　p. 12209-12216　2019/05/22　Research paper (scientific journal)

Anthracene‐Attached Persistent Tricyclic Aromatic Hydrocarbon Radicals

Tomohiko Nishiuchi, Ryuoh Ito, Aya Takada, Yuri Yasuda, Takaya Nagata, Erik Stratmann, Takashi Kubo

Chemistry – An Asian Journal　Vol. 14　No. 10　p. 1830-1836　2019/05/15　Research paper (scientific journal)

Dynamics of Water Molecules in a 3-Fold Interpenetrated Hydrogen-Bonded Organic Framework Based on Tetrakis(4-pyridyl)methane

Daisuke Inokuchi, Yasukazu Hirao, Kazuyuki Takahashi, Kouzou Matsumoto, Hatsumi Mori, Takashi Kubo

The Journal of Physical Chemistry C　Vol. 123　No. 11　p. 6599-6606　2019/03/21　Research paper (scientific journal)

Synthesis, Physical Properties, and Reactivity of Stable, π-Conjugated, Carbon-Centered Radicals

Takashi Kubo

Molecules　Vol. 24　No. 4　p. 665-665　2019/02/13　Research paper (scientific journal)

Quantum Master Equation Approach to Singlet Fission Dynamics in Pentacene Linear Aggregate Models: Size Dependences of Excitonic Coupling Effects

Masayoshi Nakano, Takanori Nagami, Takayoshi Tonami, Kenji Okada, Soichi Ito, Ryohei Kishi, Yasutaka Kitagawa, Takashi Kubo

Journal of Computational Chemistry　Vol. 40　No. 1　p. 89-104　2019/01/05　Research paper (scientific journal)

Synthesis and Properties of a Highly Congested Tri(9‐anthryl)methyl Radical

Tomohiko Nishiuchi, Seito Aibara, Takashi Kubo

Angew. Chem. Int. Ed.　Vol. 57　No. 50　p. 16516-16519　2018/10　Research paper (scientific journal)

Donor-Donor'-Acceptor Triads based on [3.3]Paracyclophane with 1,4-Dithiafulvene Donor and Cyanomethylene Acceptor: Synthesis, Structure, Electro- and Photo-physical Properties

Katsuya Sako, Tomoya Hasegawa, Hiroyuki Onda, Michito Shiotsuka, Motonori Watanabe, Teruo Shinmyozu, Sachiko Tojo, Mamoru Fujitsuka, Tetsuro Majima, Yasukazu Hirao, Takashi Kubo, Tetsuo Iwanaga, Shinji Toyota, Hiroyuki Takemura

Chemistry - A European Journal　Vol. 24　No. 44　p. 11407-11416　2018/08　Research paper (scientific journal)

Unforeseen 1,2-Aryl Shift in Tetraarylpyrrolo[3,2- b] pyrroles Triggered by Oxidative Aromatic Coupling

Maciej Krzeszewski, Keisuke Sahara, Yevgen M. Poronik, Takashi Kubo, Daniel T. Gryko

Organic Letters　Vol. 20　No. 6　p. 1517-1520　2018/03/16　Research paper (scientific journal)

Polarity-Dependent Isomerization of an Unsymmetrical Overcrowded Ethylene Promoted by Zwitterionic Contribution in the Twisted Isomer

Yasukazu Hirao, Nobuhiro Nagamachi, Katsuma Hosoi, Takashi Kubo

Chemistry - An Asian Journal　Vol. 13　No. 5　p. 510-514　2018/03/02　Research paper (scientific journal)

Benzenoid Quinodimethanes

Akihito Konishi, Takashi Kubo

Topics in Current Chemistry　Vol. 375　No. 6　2017/12/01

Elucidation of Intramolecular Through‐Space Electronic Communication in a Propeller‐Shaped Molecule

Takuya Kodama, Yasukazu Hirao, Tomohiko Nishiuchi, Takashi Kubo

ChemPlusChem　2017/07　Research paper (scientific journal)

Anthroxyl-based biradical: toward the construction of highly stable multi-spin systems

Yasukazu Hirao, Akihito Konishi, Takashi Kubo

ORGANIC CHEMISTRY FRONTIERS　Vol. 4　No. 5　p. 828-833　2017/05　Research paper (scientific journal)

Direct quantitative measurement of the C=O center dot center dot center dot H-C bond by atomic force microscopy

Shigeki Kawai, Tomohiko Nishiuchi, Takuya Kodama, Peter Spijker, Remy Pawlak, Tobias Meier, John Tracey, Takashi Kubo, Ernst Meyer, Adam S. Foster

SCIENCE ADVANCES　Vol. 3　No. 5　2017/05　Research paper (scientific journal)

Elucidation of Intramolecular Through‐Space Electronic Communication in Propeller‐Shaped Molecule

Takuya Kodama, Yasukazu Hirao, Tomohiko Nishiuchi, Takashi Kubo

ChemPlusChem　Vol. 82　No. 7　p. 1006-1009　2017/04　Research paper (scientific journal)

Synthesis, crystal structure, and photophysical properties of 2,9-disubstituted peropyrene derivatives

Kazuyuki Uchida, Takashi Kubo, Daiki Yamanaka, Akihiro Furube, Hiroyuki Matsuzaki, Ritsuki Nishii, Yusuke Sakagami, Aizitiaili Abulikemu, Kenji Kamada

Canadian Journal of Chemistry　Vol. 95　No. 4　p. 432-444　2017/04　Research paper (scientific journal)

SYNTHESES OF PARTIALLY BROMINATED DERIVATIVES OF TETRA-2-THIENYLMETHANE FOR THREE-DIMENSIONALLY EXTENDED pi-ELECTRON SYSTEMS

Kouzou Matsumoto, Takeshi Suzuki, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

HETEROCYCLES　Vol. 95　No. 1　p. 615-623　2017/01　Research paper (scientific journal)

Recent Advances in the Chemistry of Phenalenyl

Kazuyuki Uchida, Takashi Kubo

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 74　No. 11　p. 1069-1077　2016/11　Research paper (scientific journal)

Nonplanar Butterfly-Shaped pi-Expanded Pyrrolopyrroles

Maciej Krzeszewski, Takuya Kodama, Eli M. Espinoza, Valentine I. Vullev, Takashi Kubo, Daniel T. Gryko

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 22　No. 46　p. 16478-16488　2016/11　Research paper (scientific journal)

Quantum Master Equation Approach to Singlet Fission Dynamics of Realistic/Artificial Pentacene Dimer Models: Relative Relaxation Factor Analysis

Masayoshi Nakano, Soichi Ito, Takanori Nagami, Yasutaka Kitagawa, Takashi Kubo

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 120　No. 40　p. 22803-22815　2016/10　Research paper (scientific journal)

Synthesis, Structure, and Properties of Quinone Methides Incorporating Thiophene and Bithiophene Derivatives: New Overcrowded Extended Quinonoid pi-Systems

Hiroyuki Kurata, Taihei Inoue, Takeshi Suzuki, Yasukazu Hirao, Kouzou Matsumoto, Takashi Kubo

SYNLETT　Vol. 27　No. 14　p. 2133-2139　2016/09　Research paper (scientific journal)

Fluxional sigma-Bonds of the 2,5,8-Trimethylphenalenyl Dimer: Direct Observation of the Sixfold sigma-Bond Shift via a pi-Dimer

Kazuyuki Uchida, Zhongyu Mou, Miklos Kertesz, Takashi Kubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 138　No. 13　p. 4665-4672　2016/04　Research paper (scientific journal)

SYNTHESIS OF A CAGE-SHAPED NICKEL(H) COMPLEX OF BIS(4-CYCLOHEXYLAAHNO-3-PYREDYL)DISULFIDE WITH mu(2)-CI BRIDGING

Kouzou Matsumoto, Naoki Kitayama, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

HETEROCYCLES　Vol. 93　No. 1　p. 406-410　2016/04　Research paper (scientific journal)

Intramolecular Interaction, Photoisomerization, and Mechanical C-C Bond Dissociation of 1,2-Di(9-anthryl)benzene and Its Photoisomer: A Fundamental Moiety of Anthracene-Based it pi-Cluster Molecules

Tomohiko Nishiuchi, Shin-ya Uno, Yasukazu Hirao, Takashi Kubo

JOURNAL OF ORGANIC CHEMISTRY　Vol. 81　No. 5　p. 2106-2112　2016/03　Research paper (scientific journal)

Biphenalenylidene: Isolation and Characterization of the Reactive Intermediate on the Decomposition Pathway of Phenalenyl Radical

Kazuyuki Uchida, Soichi Ito, Masayoshi Nakano, Manabu Abe, Takashi Kubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 138　No. 7　p. 2399-2410　2016/02　Research paper (scientific journal)

Stealth fast photoswitching of negative photochromic naphthalene-bridged phenoxyl-imidazolyl radical complexes

Katsuya Mutoh, Yoichi Kobayashi, Yasukazu Hirao, Takashi Kubo, Jiro Abe

CHEMICAL COMMUNICATIONS　Vol. 52　No. 41　p. 6797-6800　2016　Research paper (scientific journal)

Improvement of properties of an ambipolar organic field-effect transistor by using a singlet biradicaloid film

Wataru Yamane, Harunobu Koike, Masayuki Chikamatsu, Takashi Kubo, Tomohiko Nishiuchi, Kaname Kanai

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 55　No. 1　p. 011601-1-011601-5　2016/01　Research paper (scientific journal)

Stable Delocalized Singlet Biradical Hydrocarbon for Organic Field-Effect Transistors

Harunobu Koike, Masayuki Chikamatsu, Reiko Azumi, Jun'ya Tsutsumi, Kazumichi Ogawa, Wataru Yamane, Tomohiko Nishiuchi, Takashi Kubo, Tatsuo Hasegawa, Kaname Kanai

ADVANCED FUNCTIONAL MATERIALS　Vol. 26　No. 2　p. 277-283　2016/01　Research paper (scientific journal)

SYNTHESIS, MOLECULAR STRUCTURE, AND MORPHOLOGICAL PROPERTIES OF DENDRITIC TETRA-2-THIENYLMETHANE

Kouzou Matsumoto, Sota Kugo, Takeshi Suzuki, Daisuke Takajo, Akira Inaba, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

HETEROCYCLES　Vol. 91　No. 12　p. 2343-2353　2015/12　Research paper (scientific journal)

Hetero-pi-Dimers of Phenalenyls

Zhongyu Mou, Takashi Kubo, Miklos Kertesz

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 50　p. 18230-18236　2015/12　Research paper (scientific journal)

Correction to Evidence of σ- and π-Dimerization in a Series of Phenalenyls.

Mou Z, Uchida K, Kubo T, Kertesz M

Journal of the American Chemical Society　Vol. 137　No. 43　2015/11　Research paper (scientific journal)

Recent Progress in Quinoidal Singlet Biradical Molecules

Takashi Kubo

CHEMISTRY LETTERS　Vol. 44　No. 2　p. 111-122　2015/02

Phenalenyl-Based Open-Shell Polycyclic Aromatic Hydrocarbons

Takashi Kubo

CHEMICAL RECORD　Vol. 15　No. 1　p. 218-232　2015/02　Research paper (scientific journal)

Isolation of a Hydrogen-Bonded Complex Based on the Anthranol/Anthroxyl Pair: Formation of a Hydrogen-Atom Self-Exchange System

Yasukazu Hirao, Tohru Saito, Hiroyuki Kurata, Takashi Kubo

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 54　No. 8　p. 2402-2405　2015/02　Research paper (scientific journal)

Recent Progress in Quinoidal Singlet Biradical Molecules

Chem. Lett.　Vol. 44　p. 111-122　2015/02

Open-Shell π-Conjugated Hydrocarbons

Kubo, T.

Organic Redox Systems: Synthesis, Properties, and Applications　2015　Research paper (scientific journal)

Organic Chemistry of Graphene Framework

Akihito Konishi, Takashi Kubo

Chemical Science of Electron Systems　p. 337-360　2015/01/01　Part of collection (book)

Efficient Synthesis of Tetra-4-pyridylmethane: Pyrolysis of Tri(4-pyridyl)-4-pyridylazomethane

Daisuke Inokuchi, Kouzou Matsumoto, Kenji Kobayashi, Koji Onishi, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

CHEMISTRY LETTERS　Vol. 44　No. 1　p. 32-34　2015/01　Research paper (scientific journal)

Recent progress in quinoidal singlet biradical molecules

Takashi Kubo

Chemistry Letters　Vol. 44　No. 2　p. 111-122　2015　Research paper (scientific journal)

Phenalenyl-based open-shell polycyclic aromatic hydrocarbons

Takashi Kubo

Chemical Record　Vol. 15　No. 1　p. 218-232　2015/01　Research paper (scientific journal)

A facile synthesis of trinaphtho[3.3.3]propellane and its pi-extension and the formation of a two-dimensional honeycomb molecular assembly

Takashi Kubo, Shogo Miyazaki, Takuya Kodama, Mitsuya Aoba, Yasukazu Hirao, Hiroyuki Kurata

CHEMICAL COMMUNICATIONS　Vol. 51　No. 18　p. 3801-3803　2015　Research paper (scientific journal)

Evidence of sigma- and pi-Dimerization in a Series of Phenalenyls

Zhongyu Mou, Kazuyuki Uchida, Takashi Kubo, Miklos Kertesz

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 136　No. 52　p. 18009-18022　2014/12　Research paper (scientific journal)

Synthesis of Sexithiophene-Bridged Cage Compound: A New Class of Three-Dimensionally Expanded Oligothiophenes

Kazuhiko Adachi, Yasukazu Hirao, Kouzou Matsumoto, Takashi Kubo, Hiroyuki Kurata

ORGANIC LETTERS　Vol. 16　No. 22　p. 5870-5873　2014/11　Research paper (scientific journal)

Voltammetric and in situ frequency modulation atomic force microscopic investigation of phenalenyl derivatives adsorbed on graphite surfaces

Toni Utsunomiya, Yasuyuki Yokota, Toshiaki Enoki, Yasukazu Hirao, Takashi Kubo, Ken-ichi Fukui

CARBON　Vol. 77　p. 184-190　2014/10　Research paper (scientific journal)

Design and Synthesis of New Stable Fluorenyl-Based Radicals

Yi Tian, Kazuyuki Uchida, Hiroyuki Kurata, Yasukazu Hirao, Tomohiko Nishiuchi, Takashi Kubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 136　No. 36　p. 12784-12793　2014/09　Research paper (scientific journal)

Third-Order Nonlinear Optical Properties of One-Dimensional Open-Shell Molecular Aggregates Composed of Phenalenyl Radicals

Kyohei Yoneda, Masayoshi Nakano, Kotaro Fukuda, Hiroshi Matsui, Shota Takamuku, Yuta Hirosaki, Takashi Kubo, Kenji Kamada, Benoit Champagne

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 20　No. 35　p. 11129-11136　2014/08　Research paper (scientific journal)

Dual Association Modes of the 2,5,8-Tris(pentafluorophenyl)phenalenyl Radical

Kazuyuki Uchida, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo, Sayaka Hatano, Katsuya Inoue

CHEMISTRY-AN ASIAN JOURNAL　Vol. 9　No. 7　p. 1823-1829　2014/07　Research paper (scientific journal)

Anthenes: Model systems for understanding the edge state of graphene nanoribbons

Akihito Konishi, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo, Masayoshi Nakano, Kenji Kamada

PURE AND APPLIED CHEMISTRY　Vol. 86　No. 4　p. 497-505　2014/04　Research paper (scientific journal)

Synthesis and Magnetic Properties of Anthenes Aiming for Graphene Nanoribbon

Vol. 65　No. 2　p. 105-110　2014/02

SYNTHESIS AND CHARACTERIZATION OF NICKEL COMPLEX OF 4-AMINO-3-PYRIDINETHIOLATE

Kouzou Matsumoto, Maho Nishizawa, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

HETEROCYCLES　Vol. 88　No. 1　p. 175-178　2014/01　Research paper (scientific journal)

Investigating the edge state of graphene nanoribbons by a chemical approach: Synthesis and magnetic properties of zigzag-edged nanographene molecules

Akihito Konishi, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

SOLID STATE COMMUNICATIONS　Vol. 175　p. 62-70　2013/12　Research paper (scientific journal)

Electron transfer of phenalenyl derivative molecules adsorbed at the graphite electrode/aqueous solution interface

Toru Utsunomiya, Yasuyuki Yokota, Toshiaki Enoki, Yasukazu Hirao, Takashi Kubo, Ken-ichi Fukui

CARBON　Vol. 63　p. 196-201　2013/11　Research paper (scientific journal)

Facile Synthesis and Lateral pi-Expansion of Bisanthenes

Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

CHEMISTRY LETTERS　Vol. 42　No. 6　p. 592-594　2013/06　Research paper (scientific journal)

Direct observation of energy band development in a one-dimensional biradical molecular chain by ultraviolet photoemission spectroscopy

Harunobu Koike, Takashi Kubo, Kazuyuki Uchida, Masayuki Chikamatsu, Reiko Azumi, Kazuhiko Mase, Kaname Kanai

Applied Physics Letters　Vol. 102　No. 13　2013/04/01　Research paper (scientific journal)

Diradicalology in third-order nonlinear optical systems: Second hyperpolarizabilities of acetylene-linked phenalenyl-based superpolyenes

Masayoshi Nakano, Ryohei Kishi, Hitoshi Fukui, Takuya Minami, Kyohei Yoneda, Shu Minamide, Yudai Inoue, Taishi Yamada, Soichi Ito, Shabbir Muhammad, Yasuteru Shigeta, Takashi Kubo, Benoit Champagne

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY　Vol. 113　No. 4　p. 585-591　2013/02　Research paper (scientific journal)

Electronic structure of one-dimensional biradical molecular chain

H. Koike, K. Ogawa, T. Kubo, K. Uchida, M. Chikamatsu, R. Azumi, K. Mase, K. Kanai

Materials Research Society Symposium Proceedings　Vol. 1605　2013　Research paper (international conference proceedings)

Synthesis and Characterization of Quarteranthene: Elucidating the Characteristics of the Edge State of Graphene Nanoribbons at the Molecular Level

Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Ryohei Kishi, Yasuteru Shigeta, Masayoshi Nakano, Kazuya Tokunaga, Kenji Kamada, Takashi Kubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 135　No. 4　p. 1430-1437　2013/01　Research paper (scientific journal)

Electronic structure of organic biradical molecular films

Kaname Kanai, Harunobu Koike, Rie Suizu, Kunio Awaga, Kazuhiko Mase, Takashi Kubo

Journal of the Vacuum Society of Japan　Vol. 56　No. 1　p. 32-38　2013　Research paper (scientific journal)

Spin structure of polycyclic aromatic hydrocarbons

Akihito Konishi, Takashi Kubo

Physics and Chemistry of Graphene: Graphene to Nanographene　p. 289-351　2012/12/01　Part of collection (book)

ISOLATION AND FIRST X-RAY STRUCTURES OF NICKEL COMPLEXES OF 1,2,5-THIADIAZOLE-3,4-DITHIOLATE (TDAS) IN PROTONATED FORMS

Kouzou Matsumoto, Maho Nishizawa, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

HETEROCYCLES　Vol. 86　No. 2　p. 991-996　2012/12　Research paper (scientific journal)

Impact of antidot structure on the multiradical characters, aromaticities, and third-order nonlinear optical properties of hexagonal graphene nanoflakes

Yoneda, K., Nakano, M., Inoue, Y., Inui, T., Fukuda, K., Shigeta, Y., Kubo, T., Champagne, B.

Journal of Physical Chemistry C　Vol. 116　No. 33　2012　Research paper (scientific journal)

Synthesis, Electronic, and Morphological Properties of Tetrahedral Oligothiophenes with n-Hexyl Terminal Groups

Kouzou Matsumoto, Sota Kugo, Daisuke Takajo, Akira Inaba, Yasukazu Hirao, Hiroyuki Kurata, Takeshi Kawase, Takashi Kubo

CHEMISTRY-AN ASIAN JOURNAL　Vol. 7　No. 1　p. 225-232　2012/01　Research paper (scientific journal)

Aromaticity and pi-bond covalency: prominent intermolecular covalent bonding interaction of a Kekule hydrocarbon with very significant singlet biradical character

Akihiro Shimizu, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Mikio Uruichi, Kyuya Yakushi

CHEMICAL COMMUNICATIONS　Vol. 48　No. 45　p. 5629-5631　2012　Research paper (scientific journal)

Theoretical Consideration of Singlet Open-Shell Character of Polyperiacenes Using Clar's Aromatic Sextet Valence Bond Model and Quantum Chemical Calculations

Akihiro Shimizu, Yasukazu Hirao, Takashi Kubo, Masayoshi Nakano, Edith Botek, Benoit Champagne

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 399-405　2012　Research paper (international conference proceedings)

Theoretical Aspects on the Evaluation and Interpretation of the Third-Order Nonlinear Optical Properties of Diradical Compounds

Benoit Champagne, Edith Botek, Akihiro Shimizu, Takashi Kubo, Kenji Kamada, Koji Ohta, Ryohei Kishi, Hitoshi Fukui, Hideaki Takahashi, Masayoshi Nakano

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 844-847　2012　Research paper (international conference proceedings)

Synthesis and Electronic Structure of Bisanthene: a Small Molecular-Sized Graphene with Zigzag Edges

Yasukazu Hirao, Akihito Konishi, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 863-866　2012　Research paper (international conference proceedings)

Spin Polarization and Third-Order Nonlinear Optical Properties of Open-Shell Singlet Graphene Nanoflakes

Masayoshi Nakano, Kyohei Yoneda, Hiroshi Nagai, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 392-398　2012　Research paper (international conference proceedings)

Singlet Open-Shell Character of Conjugated Kekule Molecules

Takashi Kubo, Mitsuya Aoba, Akihiro Shimizu, Yasukazu Hirao, Kozo Matsumoto, Hiroyuki Kurata, Masayoshi Nakano

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 883-886　2012　Research paper (international conference proceedings)

One- and Two-Photon Absorptions in Open-Shell Singlet Systems

Masayoshi Nakano, Kyohei Yoneda, Ryohei Kishi, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 136-142　2012　Research paper (international conference proceedings)

Long-Range-Corrected UDFT Study on Second Hyperpolarizabilities of Open-Shell Singlet Systems

Ryohei Kishi, Sean Bonness, Kyohei Yoneda, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Takao Tsuneda, Masayoshi Nakano

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 651-654　2012　Research paper (international conference proceedings)

Electron Donor Solvent Effects on the (Hyper) Polarizabilities of a Solute Presenting Singlet Diradical Character

Hideaki Takahashi, Kazuki Kubota, Hitoshi Fukui, Sean Bonness, Kyohei Yoneda, Ryohei Kishi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Masayoshi Nakano

INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2009 (ICCMSE 2009)　Vol. 1504　p. 899-902　2012　Research paper (international conference proceedings)

(Hyper)polarizability density analysis for open-shell molecular systems based on natural orbitals and occupation numbers

Masayoshi Nakano, Hitoshi Fukui, Takuya Minami, Kyohei Yoneda, Yasuteru Shigeta, Ryohei Kishi, Benoit Champagne, Edith Botek, Takashi Kubo, Koji Ohta, Kenji Kamada

THEORETICAL CHEMISTRY ACCOUNTS　Vol. 130　No. 4-6　p. 711-724　2011/12　Research paper (scientific journal)

Experimental consideration of covalent-bonding interactions in stacks of singlet biradicals having Kekulé structures

Akihiro Shimizu, Masayoshi Nakano, Yasukazu Hirao, Takashi Kubo

Journal of Physical Organic Chemistry　Vol. 24　No. 10　p. 876-882　2011/10　Research paper (international conference proceedings)

Synthesis, Crystal Structure, and Physical Properties of Sterically Unprotected Hydrocarbon Radicals

Takashi Kubo, Yoshiki Katada, Akihiro Shimizu, Yasukazu Hirao, Kazunobu Sato, Takeji Takui, Mikio Uruichi, Kyuya Yakushi, Robert C. Haddon

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 36　p. 14240-14243　2011/09　Research paper (scientific journal)

"Marking" the Nitrogen Atoms of Phenyl-(2-pyridyl)-(3-pyridyl)-(4-pyridyl)-methane. Synthesis and Absolute Configuration of the Corresponding Tris(pyridine N-oxide)

Kouzou Matsumoto, Kaori Miki, Takuya Inagaki, Tatsuo Nehira, Gennaro Pescitelli, Yasukazu Hirao, Hiroyuki Kurata, Takeshi Kawase, Takashi Kubo

CHIRALITY　Vol. 23　No. 7　p. 543-548　2011/08　Research paper (scientific journal)

Third-Order Nonlinear Optical Properties of Open-Shell Supermolecular Systems Composed of Acetylene Linked Phenalenyl Radicals

Masayoshi Nakano, Ryohei Kishi, Kyohei Yoneda, Yudai Inoue, Tomoya Inui, Yasuteru Shigeta, Takashi Kubo, Benoit Champagne

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 115　No. 31　p. 8767-8777　2011/08　Research paper (scientific journal)

Experimental consideration of covalent bonding interactions in stacks of singlet biradicals having Kekule structures

Akihiro Shimizu, Yasukazu Hirao, Masayoshi Nakano, Takashi Kubo

Journal of Physical Organic Chemistry, 2011, 24, 876-882　2011/07

Open-Shell Characters and Second Hyperpolarizabilities of One-Dimensional Graphene Nanoflakes Composed of Trigonal Graphene Units

Kyohei Yoneda, Masayoshi Nakano, Hitoshi Fukui, Takuya Minami, Yasuteru Shigeta, Takashi Kubo, Edith Botek, Benoit Champagne

CHEMPHYSCHEM　Vol. 12　No. 9　p. 1697-1707　2011/06　Research paper (scientific journal)

Giant Enhancement of the Second Hyperpolarizabilities of Open-Shell Singlet Polyaromatic Diphenalenyl Diradicaloids by an External Electric Field and Donor-Acceptor Substitution

Masayoshi Nakano, Takuya Minami, Kyohei Yoneda, Shabbir Muhammad, Ryohei Kishi, Yasuteru Shigeta, Takashi Kubo, Lea Rougier, Benoit Champagne, Kenji Kamada, Koji Ohta

JOURNAL OF PHYSICAL CHEMISTRY LETTERS　Vol. 2　No. 9　p. 1094-1098　2011/05　Research paper (scientific journal)

Enhancement of Second Hyperpolarizabilities in Open-Shell Singlet Slipped-Stack Dimers Composed of Square Planar Nickel Complexes Involving o-Semiquinonato Type Ligands

Hitoshi Fukui, Yasuteru Shigeta, Masayoshi Nakano, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 115　No. 6　p. 1117-1124　2011/02　Research paper (scientific journal)

Singlet open-shell character of polyperiacenes

Akihiro Shimizu, Akihito Konishi, Yasukazu Hirao, Takashi Kubo

Graphene and its Fascinating Attributes　p. 45-57　2011/01/01　Part of collection (book)

Size dependences of the diradical character and the second hyperpolarizabilities in dicyclopenta-fused acenes: relationships with their aromaticity/antiaromaticity

Shuto Motomura, Masayoshi Nakano, Hitoshi Fukui, Kyohei Yoneda, Takashi Kubo, Raphael Carion, Benoit Champagne

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 13　No. 46　p. 20575-20583　2011　Research paper (scientific journal)

An effective synthesis of N,N-dimethylamides from carboxylic acids and a new route from N,N-dimethylamides to 1,2-diaryl-1,2-diketones

Takashi Kumagai, Tomohiro Anki, Takahiro Ebi, Akihito Konishi, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Kenta Katsumoto, Chitoshi Kitamura, Takeshi Kawase

TETRAHEDRON　Vol. 66　No. 46　p. 8968-8973　2010/11　Research paper (scientific journal)

Alternating Covalent Bonding Interactions in a One-Dimensional Chain of a Phenalenyl-Based Singlet Biradical Molecule Having Kekule Structures

Akihiro Shimizu, Takashi Kubo, Mikio Uruichi, Kyuya Yakushi, Masayoshi Nakano, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Yasushi Morita, Kazuhiro Nakasuji

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 41　p. 14421-14428　2010/10　Research paper (scientific journal)

Giant electric field effect on the second hyperpolarizability of symmetric singlet diradical molecules

Masayoshi Nakano, Benoit Champagne, Edith Botek, Koji Ohta, Kenji Kamada, Takashi Kubo

JOURNAL OF CHEMICAL PHYSICS　Vol. 133　No. 15　2010/10　Research paper (scientific journal)

Alternating Covalent Bonding Interactions in a One-Dimensional Chain of a Phenalenyl-Based Singlet Biradical Molecule Having Kekule Structures

Akihiro Shimizu, Takashi Kubo, Mikio Uruichi, Kyuya Yakushi, Masayoshi Nakano, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Yasushi Morita, Kazuhiro Nakasuji

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 41　p. 14421-14428　2010/10　Research paper (scientific journal)

Dinaphthopentalenes: Pentalene Derivatives for Organic Thin-Film Transistors

Takeshi Kawase, Takeru Fujiwara, Chitoshi Kitamura, Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Shoji Shinamura, Hiroki Mori, Eigo Miyazaki, Kazuo Takimiya

Angewandte Chemie　Vol. 122　No. 42　p. 7894-7898　2010/09　Research paper (scientific journal)

Synthesis and Characterization of Teranthene: A Singlet Biradical Polycyclic Aromatic Hydrocarbon Having Kekule Structures

Akihito Konishi, Yasukazu Hirao, Masayoshi Nakano, Akihiro Shimizu, Edith Botek, Benoit Champagne, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 132　No. 32　p. 11021-11023　2010/08　Research paper (scientific journal)

ChemInform Abstract: Pentaleno[1,2-c:4,5-c′]dithiophene Derivatives: First Synthesis, Properties, and a Molecular Structure.

Akihito Konishi, Takeru Fujiwara, Noriko Ogawa, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Chitoshi Kitamura, Takeshi Kawase

ChemInform　Vol. 41　No. 31　2010/07　Research paper (international conference proceedings)

Hydrogen-Bonded Quartz-type Network of Diprotonated Tetrakis(4-pyridyl)methane Dications

Kouzou Matsumoto, Daisuke Inokuchi, Yasukazu Hirao, Hiroyuki Kurata, Takashi Kubo

CRYSTAL GROWTH & DESIGN　Vol. 10　No. 7　p. 2854-2856　2010/07　Research paper (scientific journal)

Signature of multiradical character in second hyperpolarizabilities of rectangular graphene nanoflakes

Hiroshi Nagai, Masayoshi Nakano, Kyohei Yoneda, Ryohei Kishi, Hideaki Takahashi, Akihiro Shimizu, Takashi Kubo, Kenji Kamada, Koji Ohta, Edith Botek, Benoit Champagne

CHEMICAL PHYSICS LETTERS　Vol. 489　No. 4-6　p. 212-218　2010/04　Research paper (scientific journal)

Pentaleno[1,2-c:4,5-c ']dithiophene Derivatives: First Synthesis, Properties, and a Molecular Structure

Akihito Konishi, Takeru Fujiwara, Noriko Ogawa, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Chitoshi Kitamura, Takeshi Kawase

CHEMISTRY LETTERS　Vol. 39　No. 3　p. 300-301　2010/03　Research paper (scientific journal)

Singlet Diradical Character from Experiment

Kenji Kamada, Koji Ohta, Akihiro Shimizu, Takashi Kubo, Ryohei Kishi, Hideaki Takahashi, Edith Botek, Benoit Champagne, Masayoshi Nakano

JOURNAL OF PHYSICAL CHEMISTRY LETTERS　Vol. 1　No. 6　p. 937-940　2010/03　Research paper (scientific journal)

Long-range corrected density functional theory study on static second hyperpolarizabilities of singlet diradical systems

Ryohei Kishi, Sean Bonness, Kyohei Yoneda, Hideaki Takahashi, Masayoshi Nakano, Edith Botek, Benoit Champagne, Takashi Kubo, Kenji Kamada, Koji Ohta, Takao Tsuneda

JOURNAL OF CHEMICAL PHYSICS　Vol. 132　No. 9　2010/03　Research paper (scientific journal)

Synthesis and Identification of a Trimethylenemethane Derivative pi-Extended with Three Pyridinyl Radicals

Kouzou Matsumoto, Daisuke Inokuchi, Yasukazu Hirao, Hiroyuki Kurata, Kazunobu Sato, Takeji Takui, Takashi Kubo

ORGANIC LETTERS　Vol. 12　No. 4　p. 836-839　2010/02　Research paper (scientific journal)

Electronic structure of delocalized singlet biradical Ph-2-IDPL solid film

Kaname Kanai, Yukiko Noda, Keita Kato, Takashi Kubo, Kai Iketaki, Akihiro Shimizu, Yukio Ouchi, Kazuhiro Nakasuji, Kazuhiko Seki

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　Vol. 12　No. 39　p. 12570-12577　2010　Research paper (scientific journal)

Chemistry of Phenalenyl-based Delocalized Singlet Biradicals

Takashi Kubo, Akihiro Shimizu, Masayoshi Nakano, Kazuhiro Nakasuji

JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN　Vol. 68　No. 1　p. 64-74　2010/01　Research paper (scientific journal)

Dinaphthopentalenes: Pentalene Derivatives for Organic Thin-Film Transistors

Takeshi Kawase, Takeru Fujiwara, Chitoshi Kitamura, Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Shoji Shinamura, Hiroki Mori, Eigo Miyazaki, Kazuo Takimiya

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 49　No. 42　p. 7728-7732　2010　Research paper (scientific journal)

Chemistry of Phenalenyl-based Delocalized Singlet Biradicals

Takashi Kubo, Akihiro Shimizu, Masayoshi Nakano, Kazuhiro Nakasuji

Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry　Vol. 68　No. 1　p. 64-74　2010/01　Research paper (scientific journal)

Control of third-order nonlinear optical properties of singlet diradical square planar metal complexes involving o-semiquinonato type ligands

H. Fukui, H. Nagai, R. Kishi, T. Minami, H. Takahashi, T. Kubo, M. Nakano

SYNTHETIC METALS　Vol. 159　No. 21-22　p. 2416-2418　2009/11　Research paper (scientific journal)

Third-order nonlinear optical properties of trigonal, rhombic and bow-tie graphene nanoflakes with strong structural dependence of diradical character

Kyohei Yoneda, Masayoshi Nakano, Ryohei Kishi, Hideaki Takahashi, Akihiro Shimizu, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

CHEMICAL PHYSICS LETTERS　Vol. 480　No. 4-6　p. 278-283　2009/10　Research paper (scientific journal)

Remarkable two-photon absorption in open-shell singlet systems

Masayoshi Nakano, Kyohei Yoneda, Ryohei Kishi, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Edith Botek, Benoit Champagne

JOURNAL OF CHEMICAL PHYSICS　Vol. 131　No. 11　2009/09　Research paper (scientific journal)

Theoretical study on third-order nonlinear optical properties in hexagonal graphene nanoflakes: Edge shape effect

Hiroshi Nagai, Masayoshi Nakano, Kyohei Yoneda, Hitoshi Fukui, Takuya Minami, Sean Bonness, Ryohei Kishi, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

CHEMICAL PHYSICS LETTERS　Vol. 477　No. 4-6　p. 355-359　2009/08　Research paper (scientific journal)

Electron donor solvent effects on the (hyper)polarizabilities of a singlet diradical molecule involving a boron atom

Kazuki Kubota, Hideaki Takahashi, Hitoshi Fukui, Sean Bonness, Kyohei Yoneda, Ryohei Kishi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Masayoshi Nakano

CHEMICAL PHYSICS LETTERS　Vol. 477　No. 4-6　p. 309-314　2009/08　Research paper (scientific journal)

Magnetic Properties of Iron(II) and Cobalt(II) Complexes of Tetrakis(2-pyridyl)methane. Spin-crossover Behavior in the Cobalt(II) Complex

Ryuta Ishikawa, Kouzou Matsumoto, Koji Onishi, Takashi Kubo, Akira Fuyuhiro, Shinya Hayami, Katsuya Inoue, Sumio Kaizaki, Satoshi Kawata

CHEMISTRY LETTERS　Vol. 38　No. 6　p. 620-621　2009/06　Research paper (scientific journal)

Shape-persistent, double-helically twisted macrocycles with two quaterphenyl moieties: Synthesis, structure and physicochemical properties for a chiral sensor

Takeshi Kawase, Yoko Daifuku, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

COMPTES RENDUS CHIMIE　Vol. 12　No. 3-4　p. 403-411　2009/03　Research paper (scientific journal)

Erratum to 'Electron donor solvent effects on the (hyepr)polarizabilities of a singlet diradical molecule involving a boron atom' [Chem. Phys. Lett. 477 (2009) 309] (DOI:10.1016/j.cplett.2009.07.022)

Kubota, K., Takahashi, H., Fukui, H., Bonness, S., Yoneda, K., Kishi, R., Kubo, T., Kamada, K., Ohta, K., Champagne, B., Botek, E., Nakano, M.

Chemical Physics Letters　Vol. 479　No. 1-3　2009　Research paper (scientific journal)

An Extremely Simple Dibenzopentalene Synthesis from 2-Bromo-1-ethynylbenzenes Using Nickel(0) Complexes: Construction of Its Derivatives with Various Functionalities

Takeshi Kawase, Akihito Konishi, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 15　No. 11　p. 2653-2661　2009　Research paper (scientific journal)

Third-Order Nonlinear Optical Properties of Open-Shell Systems: Diradical Character and Spin State Dependences

Masayoshi Nakano, Hitoshi Fukui, Hiroshi Nagai, Takuya Minami, Ryohei Kishi, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

COMPUTATIONAL METHODS IN SCIENCE AND ENGINEERING, VOL 1　Vol. 1108　p. 43-+　2009　Research paper (international conference proceedings)

Resonance Balance Shift in Stacks of Delocalized Singlet Biradicals

Akihiro Shimizu, Mikio Uruichi, Kyuya Yakushi, Hiroyuki Matsuzaki, Hiroshi Okamoto, Masayoshi Nakano, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 48　No. 30　p. 5482-5486　2009　Research paper (scientific journal)

Scanning Tunneling Microscopy Study of a Phenalenyl-Based Singlet Biradical on Graphite

Kai Iketaki, Kaname Kanai, Akihiro Shimizu, Takashi Kubo, Zhi-Hong Wang, Yukio Ouchi, Yasushi Morita, Kazuhiro Nakasuji, Kazuhiko Seki

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 113　No. 4　p. 1515-1519　2009/01　Research paper (scientific journal)

Chiral Tetrakis(2-thienyl)methane Derivative: A Possible Precursor for Cryptochiral Tetraalkylmethanes

Kouzou Matsumoto, Kaori Miki, Hiroyuki Kurata, Nobuo Rikitake, Tatsuo Nehira, Takuya Inagaki, Gennaro Pescitelli, Yasukazu Hirao, Takeshi Kawase, Masaji Oda, Takashi Kubo

CHEMISTRY LETTERS　Vol. 37　No. 12　p. 1236-1237　2008/12　Research paper (scientific journal)

Theoretical study of third-order nonlinear optical properties in square nanographenes with open-shell singlet ground states

Masayoshi Nakano, Hiroshi Nagai, Hitoshi Fukui, Kyohei Yoneda, Ryohei Kishi, Hideaki Takahashi, Akihiro Shimizu, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

CHEMICAL PHYSICS LETTERS　Vol. 467　No. 1-3　p. 120-125　2008/12　Research paper (scientific journal)

Theoretical study on second hyperpolarizabilities of singlet diradical square planar nickel complexes involving o-semiquinonato type ligands

Hitoshi Fukui, Ryohei Kishi, Takuya Minami, Hiroshi Nagai, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Masayoshi Nakano

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 112　No. 36　p. 8423-8429　2008/09　Research paper (scientific journal)

Synthesis and functionalization of 3,3 '-bis(spirodienone)-Bridged 2,2 '-bithiophene: A new building block for redox-active molecular switching materials

Hiroyuki Kurata, Sang Kim, Takahisa Fujimoto, Kouzou Matsumoto, Takeshi Kawase, Takashi Kubo

ORGANIC LETTERS　Vol. 10　No. 17　p. 3837-3840　2008/09　Research paper (scientific journal)

Electronic structure of 2,5,8-tri-tert-butylphenalenyl radical studied by He(I) photoelectron spectroscopy

Mari Kubota, Tsunetoshi Kobayashi, Takashi Kubo, Kazuhiro Nakasuji

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA　Vol. 165　No. 1-3　p. 11-14　2008/09　Research paper (scientific journal)

Intermolecular interaction effects on the second hyperpolarizability of open-shell singlet diphenalenyl radical dimer

Masayoshi Nakano, Akihito Takebe, Ryohei Kishi, Hitoshi Fukui, Takuya Minami, Kazuki Kubota, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

CHEMICAL PHYSICS LETTERS　Vol. 454　No. 1-3　p. 97-104　2008/03　Research paper (scientific journal)

Multicharged iron ions produced by using induction heating vapor source

Kato, Y., Kubo, T., Muramatsu, M., Tanaka, K., Kitagawa, A., Yoshida, Y., Asaji, T., Sato, F., Iida, T.

Review of Scientific Instruments　Vol. 79　No. 2　2008　Research paper (scientific journal)

Theoretical study on the second hyperpolarizability of open-shell singlet one-dimensional systems with a charged defect

Akihito Takebe, Masayoshi Nakano, Ryohei Kishi, Masahito Nate, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

CHEMICAL PHYSICS LETTERS　Vol. 451　No. 1-3　p. 111-115　2008/01　Research paper (scientific journal)

Spin State Dependence of Second Hyperpolarizabilities of Zethrenes

Masayoshi Nakano, Ryohei Kishi, Akihito Takebe, Masahito Nate, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

SELECTED PAPERS FROM ICNAAM 2007 AND ICCMSE 2007　Vol. 1046　p. 15-+　2008　Research paper (international conference proceedings)

Tetrahedral Oligothiophenes; Synthesis, X-ray Analysis, and Optoelectronic Properties of Highly Symmetrical, 3D-Branched Oligothiophenes

Kouzou Matsumoto, Toru Tanaka, Sota Kugo, Takuya Inagaki, Yoshikazu Hirao, Hiroyuki Kurata, Takeshi Kawase, Takashi Kubo

CHEMISTRY-AN ASIAN JOURNAL　Vol. 3　No. 12　p. 2024-2032　2008　Research paper (scientific journal)

Finite-field spin-flip configuration interaction calculation of the second hyperpolarizabilities of singlet diradical systems

Ryohei Kishi, Masayoshi Nakano, Suguru Ohta, Akihito Takebe, Masahito Nate, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

JOURNAL OF CHEMICAL THEORY AND COMPUTATION　Vol. 3　No. 5　p. 1699-1707　2007/09　Research paper (scientific journal)

Second hyperpolarizabilities of singlet polycyclic diphenalenyl radicals: Effects of the nature of the central heterocyclic ring and substitution to diphenalenyl rings

Masayoshi Nakano, Nozomi Nakagawa, Ryohei Kishi, Suguru Ohta, Masahito Nate, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Yasushi Morita, Kazuhiro Nakasuji, Kizashi Yamaguchi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 111　No. 37　p. 9102-9110　2007/09　Research paper (scientific journal)

A new hydrogen-bonded charge-transfer complex [Ni(Hpydt)(2)]TNAP: Synthesis, structure and electrical conductivity

Sota Shibahara, Hiroshi Kitagawa, Takashi Kubo, Kazuhiro Nakasuji

INORGANIC CHEMISTRY COMMUNICATIONS　Vol. 10　No. 8　p. 860-862　2007/08　Research paper (scientific journal)

Relationship between third-order nonlinear optical properties and magnetic interactions in open-shell systems: A new paradigm for nonlinear optics

Masayoshi Nakano, Ryohei Kishi, Suguru Ohta, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Edith Botek, Benoit Champagne

PHYSICAL REVIEW LETTERS　Vol. 99　No. 3　2007/07　Research paper (scientific journal)

First and second hyperpolarizabilities of donor-acceptor disubstituted diphenalenyl radical systems

Masayoshi Nakano, Suguru Ohta, Kazuya Tokushima, Ryohei Kishi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Hideaki Takahashi

CHEMICAL PHYSICS LETTERS　Vol. 443　No. 1-3　p. 95-101　2007/07　Research paper (scientific journal)

Ambipolar organic field-effect transistors based on a low band gap semiconductor with balanced hole and electron mobilities

Masayuki Chikamatsu, Takefumi Mikami, Jiro Chisaka, Yuji Yoshida, Reiko Azumi, Kiyoshi Yase, Akihiro Shimizu, Takashi Kubo, Yasushi Morita, Kazuhiro Nakasuji

APPLIED PHYSICS LETTERS　Vol. 91　No. 4　2007/07　Research paper (scientific journal)

CASCI-DFT study of the phenalenyl radical system

T. Ukai, K. Nakata, S. Yamanaka, T. Kubo, Y. Morita, T. Takada, K. Yamaguchi

POLYHEDRON　Vol. 26　No. 9-11　p. 2313-2319　2007/06　Research paper (scientific journal)

Theoretical study on the second hyperpolarizabilities of phenalenyl radical systems involving acetylene and vinylene linkers: Diradical character and spin multiplicity dependences

Suguru Ohta, Masayoshi Nakano, Takashi Kubo, Kenji Kamada, Koji Ohta, Ryohei Kishi, Nozomi Nakagawa, Benoit Champagne, Edith Botek, Akihito Takebe, Shin-ya Umezaki, Masahito Nate, Hideaki Takahashi, Shin-ichi Furukawa, Yasushi Morita, Kazuhiro Nakasuji, Kizashi Yamaguchi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 111　No. 18　p. 3633-3641　2007/05　Research paper (scientific journal)

Syntheses and unusual segregated-alternated hybrid stacking structure of hydrogen-bonded charge-transfer complexes composed of bis[2,3-pyridinedithiolate]metal complexes

Sota Shibahara, Hiroshi Kitagawa, Yoshiki Ozawa, Koshiro Toriumi, Takashi Kubo, Kazuhiro Nakasuji

INORGANIC CHEMISTRY　Vol. 46　No. 4　p. 1162-1170　2007/02　Research paper (scientific journal)

Singlet biradical character of phenalenyl-based Kekule hydrocarbon with naphthoquinoid structure

Takashi Kubo, Akihiro Shimizu, Mikio Uruichi, Kyuya Yakushi, Masayoshi Nakano, Daisuke Shiomi, Kazunobu Sato, Takeji Takui, Yasushi Morita, Kazuhiro Nakasuji

ORGANIC LETTERS　Vol. 9　No. 1　p. 81-84　2007/01　Research paper (scientific journal)

Strong two-photon absorption of singlet diradical hydrocarbons

Kenji Kamada, Koji Ohta, Takashi Kubo, Akihiro Shimizu, Yasushi Morita, Kazuhiro Nakasuji, Ryohei Kishi, Suguru Ohta, Shin-ichi Furukawa, Hideaki Takahashi, Masayoshi Nakano

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 46　No. 19　p. 3544-3546　2007　Research paper (scientific journal)

Second hyperpolarizabilities (gamma) of 1,3-dipole systems: Diradical character dependence of gamma

Masayoshi Nakano, Ryohei Kishi, Akihito Takebe, Masahito Nate, Hideaki Takahashi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

COMPUTATION IN MODERN SCIENCE AND ENGINEERING VOL 2, PTS A AND B　Vol. 2　p. 102-+　2007　Research paper (international conference proceedings)

Synthesis and characterization of acetylene-linked bisphenalenyl and metallic-like Behavior in its charge-transfer complex

Takashi Kubo, Yuko Goto, Mikio Uruichi, Kyuya Yakushi, Masayoshi Nakano, Akira Fuyuhiro, Yasushi Morita, Kazuhiro Nakasuji

CHEMISTRY-AN ASIAN JOURNAL　Vol. 2　No. 11　p. 1370-1379　2007　Research paper (scientific journal)

Syntheses and Unusual Segregated-Alternated Hybrid Stacking Structure of Hydrogen-Bonded Charge- Transfer Complexes Composed of Bis[2,3-pyridinedithiolate]Metal Complexes

Shibahara, S, Kitagawa, H, Ozawa, Y, Toriumi, K, Kubo, T, Nakasuji, K

Inorg. Chem.　2007/01　Research paper (scientific journal)

Second hyperpolarizabilities (gamma) of open-shell singlet one-dimensional systems: Intersite interaction effects on the average diradical character and size dependences of gamma

Masayoshi Nakano, Akihito Takebe, Ryohei Kishi, Suguru Ohta, Masahito Nate, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Hideaki Takahashi, Shin-ichi Furukawa, Yasushi Morita, Kazuhiro Nakasuji

CHEMICAL PHYSICS LETTERS　Vol. 432　No. 4-6　p. 473-479　2006/12　Research paper (scientific journal)

Second hyperpolarizabilities of polycyclic diphenalenyl radicals: Effects of para/ortho-quinoid structures and central ring modification

Masayoshi Nakano, Nozomi Nakagawa, Suguru Ohta, Ryohei Kishi, Takashi Kubo, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek, Hideaki Takahashi, Shin-ichi Furukawa, Yasushi Morita, Kazuhiro Nakasuji, Kizashi Yamaguchi

CHEMICAL PHYSICS LETTERS　Vol. 429　No. 1-3　p. 174-179　2006/09　Research paper (scientific journal)

Origin of the enhancement of the second hyperpolarizability of singlet diradical systems with intermediate diradical character

Masayoshi Nakano, Ryohei Kishi, Suguru Ohta, Akihito Takebe, Hideaki Takahashi, Shin-ichi Furukawa, Takashi Kubo, Yasushi Morita, Kazuhiro Nakasuji, Kizashi Yamaguchi, Kenji Kamada, Koji Ohta, Benoit Champagne, Edith Botek

JOURNAL OF CHEMICAL PHYSICS　Vol. 125　No. 7　p. 074113-1-074113-9　2006/08　Research paper (scientific journal)

Bis(9-phenanthryl)ethyne

Takashi Kubo, Kazuhiro Nakasuji

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE　Vol. 62　p. O3410-O3411　2006/08　Research paper (scientific journal)

Second hyperpolarizability of phenalenyl radical system involving acetylene pi-conjugated bridge

S Ohta, M Nakano, T Kubo, K Kamada, K Ohta, R Kishi, N Nakagawa, B Champagne, E Botek, SY Umezaki, A Takebe, H Takahashi, SI Furukawa, Y Morita, K Nakasuji, K Yamaguchi

CHEMICAL PHYSICS LETTERS　Vol. 420　No. 4-6　p. 432-437　2006/03　Research paper (scientific journal)

Powder XRD and solid-state2H-NMR studies on RAP-protected palladium nanoparticle (RAP = rubeanic-acid polymer)

M. Fujishima, M. Yamauchi, R. Ikeda, T. Kubo, K. Nakasuji, H. Kitagawa

Solid State Phenomena　Vol. 111　p. 107-110　2006　Research paper (international conference proceedings)

Second hyperpolarizabilities of polycyclic aromatic hydrocarbons involving phenalenyl radical units

M Nakano, T Kubo, K Kamada, K Ohta, R Kishi, S Ohta, N Nakagawa, H Takahashi, S Furukawa, Y Morita, K Nakasuji, K Yamaguchi

CHEMICAL PHYSICS LETTERS　Vol. 418　No. 1-3　p. 142-147　2006/01　Research paper (scientific journal)

Powder XRD and solid-state H-2-NMR studies on RAP-protected palladium nanoparticle (RAP = rubeanic-acid polymer)

M. Fujishima, M. Yamauchi, R. Ikeda, T. Kubo, K. Nakasuji, H. Kitagawa

SCIENCE AND TECHNOLOGY OF HYBRID MATERIALS　Vol. 111　p. 107-110　2006　Research paper (scientific journal)

Magnetic interaction in 2D sheet structure of bis(1H, 4H-5,6-diethylpyrazinedithiolato) copper(II) trifluoro acetate

T Kubo, M Ohashi, H Kitagawa, K Nakasuji

POLYHEDRON　Vol. 24　No. 16-17　p. 2528-2532　2005/11　Research paper (scientific journal)

y on the second hyperpolarizabilities of diradical systems

Masayoshi Nakano, Ryohei Kishi, Nozomi Nakagawa, Tomoshige Nitta, Takashi Kubo, Kazuhiro Nakasuji, Kenji Kamada, Koji Ohta, Benoît Champagne, Edith Botek, Kizashi Yamaguchi

Nonlinear Optics, Quantum Optics　Vol. 34　No. 1-4 SPEC. ISS.　p. 29-32　2005/11　Research paper (scientific journal)

A novel control scheme of the second hyperpoalrizabilities for azulene derivatives

Nozomi Nakagawa, Ryohei Kishi, Masayoshi Nakano, Tomoshige Nitta, Takashi Kubo, Kazuhiro Nakasuji, Kenji Kamada, Koji Ohta, Kizashi Yamaguchi

Nonlinear Optics, Quantum Optics　Vol. 34　No. 1-4 SPEC. ISS.　p. 37-40　2005/11　Research paper (scientific journal)

Biradicaloid character of phenalenyl-based aromatic compounds with a small HOMO-LUMO gap

T Kubo, M Sakamoto, K Nakasuji

POLYHEDRON　Vol. 24　No. 16-17　p. 2522-2527　2005/11　Research paper (scientific journal)

Preparation and proton transport property of N,N′- diethyldithiooxamidatocopper coordination polymer

Y. Nagao, T. Kubo, K. Nakasuji, R. Ikeda, T. Kojima, H. Kitagawa

Synthetic Metals　Vol. 154　No. 1-3　p. 89-92　2005/09/22　Research paper (international conference proceedings)

Molecular structure and properties of bis(o-diiminobenzosemiquinonato) metal(II) complexes monocation in salts and charge transfer complexes

T Kubo, M Sakamoto, H Kitagawa, K Nakasuji

SYNTHETIC METALS　Vol. 153　No. 1-3　p. 465-468　2005/09　Research paper (scientific journal)

Second hyperpolarizability (gamma) of singlet diradical system: Dependence of gamma on the diradical character

M Nakano, R Kishi, T Nitta, T Kubo, K Nakasuji, K Kamada, K Ohta, B Champagne, E Botek, K Yamaguchi

JOURNAL OF PHYSICAL CHEMISTRY A　Vol. 109　No. 5　p. 885-891　2005/02　Research paper (scientific journal)

Relative humidity-dependences of proton conductiVities of metal nanoparticles protected by rubeanic acid polymer

M. Fujishima, R. Ikeda, T. Kubo, K. Nakasuji, Y. Nagao, M. Yamauchi, Y. Bando, K. Uchida, H. Kitagawa

Polymer Preprints, Japan　Vol. 54　No. 1　2005　Research paper (international conference proceedings)

Theoretical study on open-shell nonlinear optical systems

M Nakano, R Kishi, N Nakagawa, T Nitta, T Kubo, K Nakasuji, K Kamada, K Ohta, B Champagne, E Botek, S Yamada, K Yamaguchi

Organic and Nanocomposite Optical Materials　Vol. 846　p. 13-24　2005　Research paper (international conference proceedings)

Synthesis, intermolecular interaction, and semiconductive behavior of a delocalized singlet biradical hydrocarbon

T Kubo, A Shimizu, M Sakamoto, M Uruichi, K Yakushi, M Nakano, D Shiomi, K Sato, T Takui, Y Morita, K Nakasuji

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 44　No. 40　p. 6564-6568　2005　Research paper (scientific journal)

Synthesis, structure, and cooperative proton-electron transfer reaction of bis(5,6-diethylpyrazinedithiolato)metal complexes (M = Ni, Pd, Pt)

T Kubo, M Ohashi, K Miyazaki, A Ichimura, K Nakasuji

INORGANIC CHEMISTRY　Vol. 43　No. 23　p. 7301-7307　2004/11　Research paper (scientific journal)

Multi-stage amphoteric redox hydrocarbons based on a phenalenyl radical

Kazuhiro Nakasuji, Takashi Kubo

Bulletin of the Chemical Society of Japan　Vol. 77　No. 10　p. 1791-1801　2004/10　Research paper (scientific journal)

Four-stage amphoteric redox properties and biradicaloid character of tetra-tert-butyldicyclopenta[b;d]thieno[1,2,3-cd;5,6,7-c ' d ']diphenalene

T Kubo, M Sakamoto, M Akabane, Y Fujiwara, K Yamamoto, M Akita, K Inoue, T Takui, K Nakasuji

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 43　No. 47　p. 6474-6479　2004　Research paper (scientific journal)

A new proton-conductive copper coordination polymer, (HOC3H6)(2)dtoaCu (dtoa = dithiooxamide)

Y Nagao, R Ikeda, K Iijima, T Kubo, K Nakasuji, H Kitagawa

SYNTHETIC METALS　Vol. 135　No. 1-3　p. 283-284　2003/04　Research paper (scientific journal)

Charge transfer salts of phenalenylium derivatives having alkylamino groups

Y Morita, E Miyazaki, T Yokoyama, T Kubo, E Mochizuki, Y Kai, K Nakasuji

SYNTHETIC METALS　Vol. 135　No. 1-3　p. 617-618　2003/04　Research paper (scientific journal)

Complementary double hydrogen-bonded CT complexes of TTF having uracil moiety

M Ohmoto, S Maki, Y Morita, T Kubo, H Kitagawa, T Okubo, T Mitani, K Nakasuji

SYNTHETIC METALS　Vol. 133　p. 337-339　2003/03　Research paper (scientific journal)

Hybrid density functional theory studies on the magnetic interactions and the weak covalent bonding for the phenalenyl radical dimeric pair

Y Takano, T Taniguchi, H Isobe, T Kubo, Y Morita, K Yamamoto, K Nakasuji, T Takui, K Yamaguchi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 124　No. 37　p. 11122-11130　2002/09　Research paper (scientific journal)

Effective exchange integrals and chemical indices for a phenalenyl radical dimeric pair

Yu Takano, Takeshi Taniguchi, Hiroshi Isobe, Takashi Kubo, Yasushi Morita, Kagetoshi Yamamoto, Kazuhiro Nakasuji, Takeji Takui, Kizashi Yamaguchi

Chemical Physics Letters　Vol. 358　No. 1-2　p. 17-23　2002/05/24　Research paper (scientific journal)

The first detection of a Clar's hydrocarbon, 2,6,10-tri-tert-butyltriangulene: A ground-state triplet of non-Kekule polynuclear benzenoid hydrocarbon

J Inoue, K Fukui, T Kubo, S Nakazawa, K Sato, D Shiomi, Y Morita, K Yamamoto, T Takui, K Nakasuji

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 123　No. 50　p. 12702-12703　2001/12　Research paper (scientific journal)

Tetra-tert-butyl-as-indaceno[1,2,3-cd:6,7,8-c′d′]diphenalene: A four-stage amphoteric redox system

Takashi Kubo, Kagetoshi Yamamoto, Kazuhiro Nakasuji, Takeji Takui

Tetrahedron Letters　Vol. 42　No. 45　p. 7997-8001　2001/11/05　Research paper (scientific journal)

4,7,11,14,18,21-Hexa-t-butyltribenzodecacyclenyl radical: A six-stage amphoteric redox system

T Kubo, K Yamamoto, K Nakasuji, T Takui, Murata, I

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN　Vol. 74　No. 11　p. 1999-2009　2001/11　Research paper (scientific journal)

The first non-Kekulé polynuclear aromatic high-spin hydrocarbon: Generation of a triangulene derivative and band structure calculation of triangulene-based high-spin hydrocarbons

K. Fukui, J. Inoue, T. Kubo, S. Nakazawa, T. Aoki, Y. Morita, K. Yamamoto, K. Sato, D. Shiomi, K. Nakasuji, T. Takui

Synthetic Metals　Vol. 121　No. 1-3　p. 1824-1825　2001/03/15　Research paper (scientific journal)

A stable neutral hydrocarbon radical: Synthesis, crystal structure, and physical properties of 2,5,8-tri-tert-butyl-phenalenyl

K Goto, T Kubo, K Yamamoto, K Nakasuji, K Sato, D Shiomi, T Takui, M Kubota, T Kobayashi, K Yakusi, JY Ouyang

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 121　No. 7　p. 1619-1620　1999/02　Research paper (scientific journal)

4,8,12,16-tetra-tert-butyl-s-indaceno[1,2,3-cd : 5,6,7-c ' d ']diphenalene: A four-stage amphoteric redox system

K Ohashi, T Kubo, T Masui, K Yamamoto, K Nakasuji, T Takui, Y Kai, Murata, I

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 120　No. 9　p. 2018-2027　1998/03　Research paper (scientific journal)

Hexa-tert-butyltribenzodecacyclenyl: A six-stage amphoteric redox system

T Kubo, K Yamamoto, K Nakasuji, T Takui, Murata, I

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH　Vol. 35　No. 4　p. 439-441　1996/03　Research paper (scientific journal)