Nonfullerene Acceptors Bearing Spiro-Substituted Bithiophene Units in Organic Solar Cells: Tuning the Frontier Molecular Orbital Distribution to Reduce Exciton Binding Energy.

Kai Wang, Seihou Jinnai, Takumi Urakami, Hirofumi Sato, Masahiro Higashi, Sota Tsujimura, Yasuhiro Kobori, Rintaro Adachi, Akira Yamakata, Yutaka Ie

Angewandte Chemie (International ed. in English)　2024/08/12　Research paper (scientific journal)

Green-light wavelength-selective organic solar cells: module fabrication and crop evaluation towards agrivoltaics

Shreyam Chatterjee, Naoto Shimohara, Takuji Seo, Seihou Jinnai, Taichi Moriyama, Morihiko Saida, Kenji Omote, Kento Hara, Yohei Iimuro, Yasuyuki Watanabe, Yutaka Ie

Materials Today Energy　p. 101673-101673　2024/08　Research paper (scientific journal)

A Dibenzo[g,p]chrysene‐Based Organic Semiconductor with Small Exciton Binding Energy via Molecular Aggregation

Hiroki Mori, Seihou JINNAI, Yasushi Hosoda, Azusa Muraoka, Ken-ichi Nakayama, Akinori Saeki, Yutaka Ie

Angewandte Chemie International Edition　2024/07/12　Research paper (scientific journal)

Colorless Near-Infrared Absorbing Dyes Based on B-N Fused Donor-Acceptor-Donor π-Conjugated Molecules for Organic Phototransistors.

Soichi Yokoyama, Sakura Utsunomiya, Takuji Seo, Akinori Saeki, Yutaka Ie

Advanced science (Weinheim, Baden-Wurttemberg, Germany)　2024/06/14　Research paper (scientific journal)

Isothianaphthene quinoids: pyrazine-annelated structures for tuning electronic properties

Keitaro Yamamoto, Seihou Jinnai, Yutaka Ie

Bulletin of the Chemical Society of Japan　Vol. 97　No. 4　2024/03/26　Research paper (scientific journal)

Green-light wavelength-selective organic solar cells for agrivoltaics: dependence of wavelength on photosynthetic rate

Seihou Jinnai, Naoto Shimohara, Kazunori Ishikawa, Kento Hama, Yohei Iimuro, Takashi Washio, Yasuyuki Watanabe, Yutaka Ie

Faraday Discussions　2023/09　Research paper (scientific journal)

Fluorinated Dihydropentalene-1,4-Dione: A Strong Electron-Accepting Unit with Organic Semiconductor Characteristics.

Soichi Yokoyama, Yutaka Ie

Chemistry (Weinheim an der Bergstrasse, Germany)　Vol. 29　No. 17　2023/03/22　Research paper (scientific journal)

s-Indacene Revisited: Modular Synthesis and Modulation of Structures and Molecular Orbitals of Hexaaryl Derivatives

Shun-Jie Jhang, Jayabalan Pandidurai, Ching-Piao Chu, Hirokazu Miyoshi, Yuta Takahara, Masahito Miki, Hikaru Sotome, Hiroshi Miyasaka, Shreyam Chatterjee, Rumi Ozawa, Yutaka Ie, Ichiro Hisaki, Chia-Lin Tsai, Yen-Ju Cheng, Yoshito Tobe

Journal of the American Chemical Society　2023/03/01　Research paper (scientific journal)

Green-Light Wavelength-Selective Organic Solar Cells Based on Poly(3-hexylthiophene) and Naphthobisthiadiazole-Containing Acceptors toward Agrivoltaics

Seihou Jinnai, Ayumi Oi, Takuji Seo, Taichi Moriyama, Masahiro Terashima, Mitsuharu Suzuki, Ken-ichi Nakayama, Yasuyuki Watanabe, Yutaka Ie

ACS Sustainable Chemistry & Engineering　Vol. 11　No. 4　p. 1548-1556　2023/01/30　Research paper (scientific journal)

A fused pi-extended molecule containing an electron-accepting naphthobisthiadiazole and its incorporation into a copolymer: synthesis, properties, and semiconducting performance

Ryo Asakawa, Takuji Seo, Soichi Yokoyama, Yutaka Ie

POLYMER JOURNAL　2022/10　Research paper (scientific journal)

Dianion and Dication of Tetracyclopentatetraphenylene as Decoupled Annulene-within-an-Annulene Models

Hirokazu Miyoshi, Ryosuke Sugiura, Ryohei Kishi, Sarah N. Spisak, Zheng Wei, Atsuya Muranaka, Masanobu Uchiyama, Nagao Kobayashi, Shreyam Chatterjee, Yutaka Ie, Ichiro Hisaki, Marina A. Petrukhina, Tohru Nishinaga, Masayoshi Nakano, Yoshito Tobe

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 61　No. 6　2022/02　Research paper (scientific journal)

Excited states engineering enables efficient near-infrared lasing in nanographenes.

Giuseppe M Paternò, Qiang Chen, Rafael Muñoz-Mármol, Michele Guizzardi, Víctor Bonal, Ryota Kabe, Alexander J Barker, Pedro G Boj, Shreyam Chatterjee, Yutaka Ie, José M Villalvilla, José A Quintana, Francesco Scotognella, Klaus Müllen, María A Díaz-García, Akimitsu Narita, Guglielmo Lanzani

Materials horizons　Vol. 9　No. 1　p. 393-402　2022/01/04　Research paper (scientific journal)

Phosphaacene as a structural analogue of thienoacenes for organic semiconductors

Kyohei Matsuo, Rina Okumura, Hironobu Hayashi, Naoki Aratani, Seihou Jinnai, Yutaka Ie, Akinori Saeki, Hiroko Yamada

Chemical Communications　2022　Research paper (scientific journal)

Synthesis, physical properties, and OFET characteristics of a propeller-shaped molecule with a dithiarubicene blade

Kenji Tsukamoto, Koji Takagi, Seihou Jinnai, Yutaka Ie, Mitsuo Hara, Takanori Fukushima

Molecular Systems Design & Engineering　2022　Research paper (scientific journal)

Effects of the rigid and sterically bulky structure of non-fused nonfullerene acceptors on transient photon-to-current dynamics

Seihou Jinnai, Kasumi Murayama, Keisuke Nagai, Megumi Mineshita, Kosaku Kato, Azusa Muraoka, Akira Yamakata, Akinori Saeki, Yasuhiro Kobori, Yutaka Ie

Journal of Materials Chemistry A　Vol. 10　No. 37　p. 20035-20047　2022　Research paper (scientific journal)

Cross-conjugated isothianaphthene quinoids: a versatile strategy for controlling electronic structures

Keitaro Yamamoto, Sergio Moles Quintero, Seihou Jinnai, Eunjeong Jeong, Kyohei Matsuo, Mitsuharu Suzuki, Hiroko Yamada, Juan Casado, Yutaka Ie

Journal of Materials Chemistry C　Vol. 10　No. 11　p. 4424-4433　2022　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Characteristics of Arch- and S-shaped Naphthobisthiadiazole-based Acceptors

Seihou Jinnai, Yutaka Ie

Journal of Photopolymer Science and Technology　Vol. 34　No. 3　p. 285-290　2021/06/11　Research paper (scientific journal)

Electron-Accepting pi-Conjugated Compound Containing Cyano-Substituted Naphthobisthiadiazole as Nonfullerene Acceptor in Organic Solar Cells

Seihou Jinnai, Ayumi Oi, Takuji Seo, Taichi Moriyama, Ryunosuke Minami, Suguru Higashida, Yutaka Ie

SYNTHESIS-STUTTGART　2021/06　Research paper (scientific journal)

Power of an Organic Electron Acceptor in Modulation of Intracellular Mitochondrial Reactive Oxygen Species: Inducing JNK- And Caspase-Dependent Apoptosis of Cancer Cells

Saswat Mohapatra, Gaurav Das, Varsha Gupta, Prasenjit Mondal, Masashi Nitani, Yutaka Ie, Shreyam Chatterjee, Yoshio Aso, Surajit Ghosh

ACS Omega　Vol. 6　No. 11　p. 7815-7828　2021/03/23　Research paper (scientific journal)

N-type Semiconducting Polymers Based on Dicyano Naphthobisthiadiazole: High Electron Mobility with Unfavorable Backbone Twist

Keitaro Iguchi, Tsubasa Mikie, Masahiko Saito, Kimihiro Komeyama, Takuji Seo, Yutaka Ie, Itaru Osaka

Chemistry of Materials　Vol. 33　No. 6　p. 2218-2228　2021/03/23　Research paper (scientific journal)

Synthesis of 5-alkynyl bicycloporphyrins as a synthon of 5-ethynyl bicycloporphyrin

Yukinori Kobayashi, Katsuya Namai, Kenta Watanabe, Akira Sasaki, Takuya Komatsu, Makoto Roppongi, Keitaro Yamamoto, Yutaka Ie, Satoshi Ito

Tetrahedron Letters　Vol. 68　p. 152857-152857　2021/03　Research paper (scientific journal)

Improving Intramolecular Hopping Charge Transport via Periodical Segmentation of π-Conjugation in a Molecule

Yutaka Ie, Yuji Okamoto, Takuya Inoue, Takuji Seo, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada, Yoshio Aso

Journal of the American Chemical Society　Vol. 143　No. 2　p. 599-603　2021/01/20　Research paper (scientific journal)

Nonfullerene acceptors for P3HT-based organic solar cells

Shreyam Chatterjee, Seihou Jinnai, Yutaka Ie

Journal of Materials Chemistry A　Vol. 9　No. 35　p. 18857-18886　2021　Research paper (scientific journal)

Oligoene and Cyanine Features of Tetracyano Quinoidal Oligothiophenes

Sergio Moles Quintero, José L. Zafra, Keitaro Yamamoto, Yoshio Aso, Yutaka Ie, Juan Casado Cordón

Journal of Materials Chemistry C　2021　Research paper (scientific journal)

End-functionalization of dithiarubicene: modulation of optoelectronic properties by metal-catalyzed coupling reactions and device application

Kenji Tsukamoto, Koji Takagi, Keitaro Yamamoto, Yutaka Ie, Takanori Fukushima

Journal of Materials Chemistry C　2021　Research paper (scientific journal)

Single‐Molecule Conductance of a π‐Hybridized Tripodal Anchor while Maintaining Electronic Communication

Tatsuhiko Ohto, Aya Tashiro, Takuji Seo, Nana Kawaguchi, Yuichi Numai, Junpei Tokumoto, Soichiro Yamaguchi, Ryo Yamada, Hirokazu Tada, Yoshio Aso, Yutaka Ie

Small　Vol. 17　No. 3　p. 2006709-2006709　2021/01　Research paper (scientific journal)

Reduction of Ethynylenes to Vinylenes in a Macrocyclic π-Extended Thiophene Skeleton Under McMurry Coupling Conditions

Keigo Shirahata, Masataka Takashika, Kazunori Hirabayashi, Masashi Hasegawa, Hiroyuki Otani, Keitaro Yamamoto, Yutaka Ie, Toshio Shimizu, Shinobu Aoyagi, Masahiko Iyoda

The Journal of Organic Chemistry　Vol. 86　No. 1　p. 302-309　2021/01/01　Research paper (scientific journal)

Correlation between the Dipole Moment of Nonfullerene Acceptors and the Active Layer Morphology of Green-Solvent-Processed P3HT-Based Organic Solar Cells

Shreyam Chatterjee, Tatsuhiko Ohto, Hirokazu Tada, Seihou Jinnai, Yutaka Ie

ACS Sustainable Chemistry & Engineering　Vol. 8　No. 51　p. 19013-19022　2020/12/28　Research paper (scientific journal)

The effect of a two-dimensional structure on the dielectric constant and photovoltaic characteristics

Kenji Mishima, Taishi Sakai, Kazumichi Yokota, Masateru Taniguchi, Yoshio Aso, Yutaka Ie, Koichi Yamashita

Journal of Photochemistry and Photobiology A: Chemistry　Vol. 401　p. 112756-112756　2020/10　Research paper (scientific journal)

Lab-on-a-graphene-FET detection of key molecular events underpinning influenza virus infection and effect of antiviral drugs

T. Ono, K. Kamada, R. Hayashi, A. R. Piacenti, C. Gabbutt, N. Sriwilaijaroen, H. Hiramatsu, Y. Kanai, K. Inoue, S. Nakakita, T. Kawahara, Y. Ie, Y. Watanabe, Y. Suzuki, S. Contera, K. Matsumoto

2020/03/20

Effects of fluorine substitution in quinoidal oligothiophenes for use as organic semiconductors

Keitaro Yamamoto, Shin-ichiro Kato, Hanna Zajaczkowska, Tomasz Marszalek, Paul W. M. Blom, Yutaka Ie

Journal of Materials Chemistry C　Vol. 8　No. 10　p. 3580-3588　2020　Research paper (scientific journal)

Quinoidal Oligothiophenes Having Full Benzene Annelation: Synthesis, Properties, Structures, and Acceptor Application in Organic Photovoltaics

Keitaro Yamamoto, Seihou Jinnai, Tsunayoshi Takehara, Takeyuki Suzuki, Yutaka Ie

Organic Letters　2020　Research paper (scientific journal)

Quinoidal Oligothiophenes Having Full Benzene Annelation: Synthesis, Properties, Structures, and Acceptor Application in Organic Photovoltaics

Keitaro Yamamoto, Seihou Jinnai, Tsunayoshi Takehara, Takeyuki Suzuki, Yutaka Ie

ORGANIC LETTERS　Vol. 22　No. 2　p. 547-551　2020/01　Research paper (scientific journal)

Impact of Noncovalent Sulfur–Fluorine Interaction Position on Properties, Structures, and Photovoltaic Performance in Naphthobisthiadiazole-Based Semiconducting Polymers

Saito, M., Fukuhara, T., Kamimura, S., Ichikawa, H., Yoshida, H., Koganezawa, T., Ie, Y., Tamai, Y., Kim, H.D., Ohkita, H., Osaka, I.

Advanced Energy Materials　2020　Research paper (scientific journal)

pi-Extension of electron-accepting dithiarubicene with a cyano-substituted electron-withdrawing group and application in air-stable n-channel organic field effect transistors

Tsukamoto, Kenji, Takagi, Koji, Nagano, Shusaku, Hara, Mitsuo, Ie, Yutaka, Osakada, Kohtaro, Takeuchi, Daisuke

JOURNAL OF MATERIALS CHEMISTRY C　Vol. 7　No. 40　p. 12610-12618　2019/10　Research paper (scientific journal)

Effects of cis–trans Conformation between Thiophene Rings on Conductance of Oligothiophenes

Tatsuhiko Ohto, Takuya Inoue, Helen Stewart, Yuichi Numai, Yoshio Aso, Yutaka Ie, Ryo Yamada, Hirokazu Tada

The Journal of Physical Chemistry Letters　Vol. 10　No. 18　p. 5292-5296　2019/09/19　Research paper (scientific journal)

Highly Planar and Completely Insulated Oligothiophenes: Effects of π-Conjugation on Hopping Charge Transport

Yutaka Ie, Yuji Okamoto, Takuya Inoue, Saori Tone, Takuji Seo, Yasushi Honda, Shoji Tanaka, See Kei Lee, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada, Yoshio Aso

The Journal of Physical Chemistry Letters　Vol. 10　No. 12　p. 3197-3204　2019/06/20　Research paper (scientific journal)

Cover Feature: Small Structural Changes in the Alkyl Substituents of Macrocyclic π‐Extended Thiophene Oligomers Causes a Key Effect on Their Stacking and Functional Properties (ChemPlusChem 6/2019)

Toshihiro Fujiwara, Masataka Takashika, Masashi Hasegawa, Yutaka Ie, Yoshio Aso, Shinobu Aoyagi, Hiroyuki Otani, Masahiko Iyoda

ChemPlusChem　Vol. 84　No. 6　p. 556-556　2019/06　Research paper (scientific journal)

Deviation from Point Dipole Analysis for Exciton Quenching in Quaterthiophene- Terminated Self-Assembled Monolayers on Au(111)

Y. Osumi, T. Yamada, Y. Ie, H.S. Kato

J. Phys. Chem. C　Vol. 123　No. 26　p. 16127-16136　2019/06　Research paper (scientific journal)

Mitochondria-Targeted New Blue Light-Emitting Fluorescent Molecular Probe

Saswat Mohapatra, Gaurav Das, Chirantan Kar, Masashi Nitani, Yutaka Ie, Yoshio Aso, Surajit Ghosh

ACS Omega　Vol. 4　No. 5　p. 9361-9366　2019/05/31　Research paper (scientific journal)

Development of an electron-transportingπ-conjugated polymer containing fluorine-substituted naphthobisthiadiazole

Yutaka Ie, Kakeru Izuno, Taichi Moriyama, Yoshio Aso

Journal of Photopolymer Science and Technology　Vol. 32　No. 5　p. 721-725　2019　Research paper (scientific journal)

Time-resolved electrostatic force microscopy using tip-synchronized charge generation with pulsed laser excitation

Kento Araki, Yutaka Ie, Yoshio Aso, Hiroshi Ohoyama, Takuya Matsumoto

Communications Physics　Vol. 2　No. 10　p. 1-8　2019/01　Research paper (scientific journal)

Small Structural Changes in the Alkyl Substituents of Macrocyclic π-Extended Thiophene Oligomers Causes a Key Effect on Their Stacking and Functional Properties

Fujiwara T, Takashika M, Hasegawa M, Ie Y, Aso Y, Aoyagi S, Otani H, Iyoda M

ChemPlusChem　Vol. 84　p. 694-703　2019　Research paper (scientific journal)

Innentitelbild: Creating Elastic Organic Crystals of π‐Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide (Angew. Chem. 52/2018)

Shotaro Hayashi, Shun‐ya Yamamoto, Daisuke Takeuchi, Yutaka Ie, Koji Takagi

Angewandte Chemie　Vol. 130　No. 52　p. 17154-17154　2018/12/21　Research paper (scientific journal)

Inside Cover: Creating Elastic Organic Crystals of π‐Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide (Angew. Chem. Int. Ed. 52/2018)

Shotaro Hayashi, Shun‐ya Yamamoto, Daisuke Takeuchi, Yutaka Ie, Koji Takagi

Angewandte Chemie International Edition　Vol. 57　No. 52　p. 16910-16910　2018/12/21　Research paper (scientific journal)

A Thiazole-fused Antiaromatic Compound Containing an s-Indacene Chromophore with a High Electron Affinity

Yutaka Ie, Chihiro Sato, Keitaro Yamamoto, Masashi Nitani, Yoshio Aso

Chemistry Letters　Vol. 47　No. 12　p. 1534-1537　2018/12/05　Research paper (scientific journal)

Antiaromatic Character of Cycloheptatriene-bis-Annelated Indenofluorene Framework Mainly Originated from Heptafulvene Segment

K. Yamamoto, Y. Ie, N. Tohnai, F. Kakiuchi, Y. Aso

Sci. Rep.　2018/12　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Characteristics of Donor–Acceptor Copolymers Based on Tetrafluoro-Substituted Benzodioxocyclohexene-Annelated Thiophene

Y. Ie, Y. Kishimoto, K. Morikawa, Y. Aso

J. Photopolym. Sci. Technol.　2018/12　Research paper (scientific journal)

A Thiazole-Fused Antiaromatic Compound Containing an s-Indacene Chromophore with a High Electron Affinity

Y. Ie, C. Sato, K. Yamamoto, M. Nitani, Y. Aso

Chem. Lett.　2018/12　Research paper (scientific journal)

Creating Elastic Organic Crystals of pi-Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide

S. Hayashi, S.-y. Yamamoto, D. Takeuchi, Y. Ie, K. Takagi

Angew. Chem. Int. Ed.　2018/12　Research paper (scientific journal)

Antiaromatic character of cycloheptatriene-bis-annelated indenofluorene framework mainly originated from heptafulvene segment

Keitaro Yamamoto, Yutaka Ie, Norimitsu Tohnai, Fumitoshi Kakiuchi, Yoshio Aso

SCIENTIFIC REPORTS　Vol. 8　2018/12　Research paper (scientific journal)

Fluorinated naphtho[1,2-c:5,6-c’]bis[1,2,5]thiadiazole-containing π-conjugated compound: synthesis, properties, and acceptor applications in organic solar cells

Shreyam Chatterjee, Yutaka Ie, Takuji Seo, Taichi Moriyama, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom, Yoshio Aso

NPG Asia Materials　Vol. 10　No. 10　p. 1016-1028　2018/10/01　Research paper (scientific journal)

Fluorinated Naptho[1,2-c:5,6-c']bis[1,2,5]thiadiazole-Containing pi-Conjugated Compound: Synthesis, Properties, and Acceptor Application in Organic Solar Cells

S. Chatterjee, Y. Ie, T. Seo, T. Moriyama, G.-J. A, H. Wetzelaer, P. W. M. Blom, Y. Aso

NPG Asia Mater.　2018/10　Research paper (scientific journal)

Synthesis and Field-Effect Transistor Application of π-Extended Lactam-Fused Conjugated Oligomers obtained by Tandem Direct Arylation

Koji Takagi, Shun-ya Yamamoto, Kenji Tsukamoto, Yuto Hirano, Mitsuo Hara, Shusaku Nagano, Yutaka Ie, Daisuke Takeuchi

Chemistry - A European Journal　Vol. 24　No. 53　p. 14137-14145　2018/09/20　Research paper (scientific journal)

Oligothiophene quinoids containing a benzo[c]thiophene unit for the stabilization of the quinoidal electronic structure

Keitaro Yamamoto, Yutaka Ie, Masashi Nitani, Norimitsu Tohnai, Fumitoshi Kakiuchi, Ke Zhang, Wojciech Pisula, Kamal Asadi, Paul W. M. Blom, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY C　Vol. 6　No. 28　2018/07　Research paper (scientific journal)

Universal strategy for Ohmic hole injection into organic semiconductors with high ionization energies

Naresh B. Kotadiya, Hao Lu, Anirban Mondal, Yutaka Ie, Denis Andrienko, Paul W. M. Blom, Gert-Jan A. H. Wetzelaer

Nature Materials　Vol. 17　No. 4　p. 329-334　2018/06/01　Research paper (scientific journal)

Publisher Correction: Universal strategy for Ohmic hole injection into organic semiconductors with high ionization energies

Naresh B. Kotadiya, Hao Lu, Anirban Mondal, Yutaka Ie, Denis Andrienko, Paul W. M. Blom, Gert-Jan A. H. Wetzelaer

Nature Materials　Vol. 17　No. 6　2018/06

Naphtho[1,2- c:5,6- c′]bis[1,2,5]thiadiazole-Based Nonfullerene Acceptors: Effect of Substituents on the Thiophene Unit on Properties and Photovoltaic Characteristics

Shreyam Chatterjee, Yutaka Ie, Yoshio Aso

ACS Omega　Vol. 3　No. 5　p. 5814-5824　2018/05/31　Research paper (scientific journal)

Enhanced Photovoltaic Performance of Amorphous Donor–Acceptor Copolymers Based on Fluorine-Substituted Benzodioxocyclohexene-Annelated Thiophene

Yutaka Ie, Koki Morikawa, Wojciech Zajaczkowski, Wojciech Pisula, Naresh B. Kotadiya, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom, Yoshio Aso

Advanced Energy Materials　Vol. 8　No. 13　2018/05/04　Research paper (scientific journal)

Enhanced Photovoltaic Performance of Amorphous Donor–Acceptor Copolymers Based on Fluorine-Substituted Benzodioxocyclohexene-Annelated Thiophene

Yutaka Ie, Koki Morikawa, Wojciech Zajaczkowski, Wojciech Pisula, Naresh B. Kotadiya, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom, Yoshio Aso

Advanced Energy Materials　Vol. 8　No. 13　2018/05/04　Research paper (scientific journal)

Naphtho[1,2-c:5,6-c']bis[1,2,5]thiadiazole-Based Nonfullerene Acceptors: Effect of Substituents on the Thiophene Unit on Properties and Photovoltaic Characteristics

S. Chatterjee, Y. Ie, Y. Aso

ACS Omega　2018/05　Research paper (scientific journal)

Oligothiophene Quinoids Containing a Benzo[c]thiophene Unit for the Stabilization of the Quinoidal Electronic Structure

K. Yamamoto, Y. Ie, M. Nitani, N. Tohnai, F. Kakiuchi, K. Zhang, W. Pisula, K. Asadi, P. W. M. Blom, Y. Aso

J. Mater. Chem. C　2018/05　Research paper (scientific journal)

Synthesis and Field-Effect Transistor Application of pi-Extended Lactam-Fused Conjugated Oligomers Obtained by Tandem Direct Arylation

K. Takagi, S.-y. Yamamoto, K. Tsukamoto, Y. Hirano, M. Hara, S. Nagano, Y. Ie, D. Takeuchi

Chem. Eur. J.　2018/03　Research paper (scientific journal)

Development of novel units for single-molecule-based electronics

Y. Ie

2018/03　Research paper (other academic)

Universal Strategy for Ohmic hole injection into organic semiconductors with high ionization energies

N. B. Kotadiya, H. Lu, A. Mondal, Y. Ie, D. Andrienko, P. W. M. Blom, G.-J. A. H. Wetz

Nat. Mater.　2018/03　Research paper (scientific journal)

Influence of molecular distortion on the exciton quenching for quaterthiophene-terminated self-assembled monolayers on Au(111)

Hiroyuki S. Kato, Yoshinari Murakami, Riyo Saitoh, Yuji Osumi, Daijiro Okaue, Yoshiaki Kiriyama, Takahiro Ueba, Takashi Yamada, Yutaka Ie, Yoshio Aso, Toshiaki Munakata

Surface Science　Vol. 669　p. 160-168　2018/03/01　Research paper (scientific journal)

Time-resolved electrostatic force visualization of photo-excited charges using tip oscillation

Araki Kento, Ie Yutaka, Aso Yoshio, Ohoyama Hiroshi, Matsumoto Takuya

Abstract of annual meeting of the Surface Science of Japan　Vol. 2018　No. 0　p. 320-320　2018

Development of donor-acceptor copolymers based on fluorine-substituted benzodioxocyclohexene-annelated thiophene

Y. Ie

2018/01　Research paper (other academic)

A Universal Synthetic Methodology for Long Polythiophenes End-functionalized with Anchor Groups

S. Tamba, Y. Ie, Y. Aso

2018/01

Development of Electron-Accepting π-Conjugated Units for Organic Electronics

Yutaka Ie, Makoto Karakawa, Masashi Nitani, Yoshio Aso

2017/11　Research paper (other academic)

Synthesis, properties, and photovoltaic characteristics of p-type donor copolymers having fluorine-substituted benzodioxocyclohexene-annelated thiophene

Yutaka Ie, Koki Morikawa, Makoto Karakawa, Naresh B. Kotadiya, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY A　Vol. 5　No. 37　p. 19773-19780　2017/10　Research paper (scientific journal)

Synthesis, properties, and photovoltaic characteristics of p-type donor copolymers having fluorine-substituted benzodioxocyclohexene-annelated thiophene

Yutaka Ie, Koki Morikawa, Makoto Karakawa, Naresh B. Kotadiya, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY A　Vol. 5　No. 37　p. 19773-19780　2017/10　Research paper (scientific journal)

Novel pi-Conjugated Systems for Organic Semiconducting Materials

Y. Ie

2017/09　Research paper (other academic)

Tetraalkoxyphenanthrene-Fused Hexadecadehydro[20]- and Tetracosadehydro[30]annulenes: Syntheses, Aromaticity/Antiaromaticity, Electronic Properties, and Self-Assembly

Nobutaka Takahashi, Shin-Ichiro Kato, Minoru Yamaji, Masahiko Ueno, Ryunosuke Iwabuchi, Yui Shimizu, Masashi Nitani, Yutaka Ie, Yoshio Aso, Takeshi Yamanobe, Hiroki Uehara, Yosuke Nakamura

JOURNAL OF ORGANIC CHEMISTRY　Vol. 82　No. 17　p. 8882-8896　2017/09　Research paper (scientific journal)

Encapsulated Oligothiophenes: Synthesis and Single-Molecule Conductance

Yoshio Aso, Yutaka Ie, Takuya Inoue, Yuji Okamoto, See K. Lee, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada

2017/07

Synthesis of Dibenzo[h,rst]pentaphenes and Dibenzo[fg,qr]pentacenes by the Chemoselective C-O Arylation of Dimethoxyanthraquinones

Yusuke Suzuki, Kohei Yamada, Kentaro Watanabe, Takuya Kochi, Yutaka Ie, Yoshio Aso, Fumitoshi Kakiuchi

ORGANIC LETTERS　Vol. 19　No. 14　p. 3791-3794　2017/07　Research paper (scientific journal)

Non-fullerene Acceptors for Organic Photovoltaics: Structures-Film Properties-Photovoltaic Characteristics Relationship

Y. Ie

2017/06　Research paper (other academic)

Development of New pi-Conjugated Systems towards Electronic Device Applications

Y. Ie

2017/06　Research paper (other academic)

Non-fullerene Acceptors for Application to Organic Photovoltaics: Structures-Thin-film Properties-Photovoltaic Characteristics Relationship

Y. Ie

2017/04　Research paper (other academic)

Three-dimensional pi-conjugated compounds as non-fullerene acceptors in organic photovoltaics: the influence of acceptor unit orientation at phase interfaces on photocurrent generation efficiency

Seihou Jinnai, Yutaka Ie, Yuki Kashimoto, Hiroyuki Yoshida, Makoto Karakawa, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY A　Vol. 5　No. 8　p. 3932-3938　2017/02　Research paper (scientific journal)

Development of donor-acceptor copolymers based on dioxocycloalkene-annelated thiophenes as acceptor units for organic photovoltaic materials

Yutaka Ie, Yoshio Aso

POLYMER JOURNAL　Vol. 49　No. 1　p. 13-22　2017/01

The 2016 ECS SiGe, Ge, & related Compound Semiconductor Symposium

Yasushi Kanai, Yutaka Ie, Koichi Inoue, Yoshio Aso, Kazuhiko Matsumoto

2016/11

Development of Novel π-Conjugated Systems for Electronic Application: Chemical Structures-Properties-Function Relationship

Yutaka Ie, Yoshio Aso

2016/10　Research paper (other academic)

Development of New π-Conjugated Compounds towards Single-molecule Electronics and Thin-film Electronics

Yutaka Ie, Yoshio Aso

2016/10　Research paper (other academic)

Synthesis, Properties, and n-Type Field-effect Transistor Characteristics of Quinoidal Terthiophenes Based on a Benzothiophen Unit

Keitaro Yamamoto, Yutaka Ie, Masashi Nitani, Fumitoshi Kakiuchi, Yoshio Aso

2016/09

Development of Electron-Transporting π-Conjugated Systems for Organic Semiconducting Materials

Yutaka Ie

2016/09　Research paper (other academic)

Development of Nonfullerene Acceptors for Application to Organic Photovoltaics: Chemical Structures-Film Properties-Photovoltaic Characteristics Relationship

Yutaka Ie

2016/09　Research paper (other academic)

Synthesis, properties, and photovoltaic characteristics of copolymers having fluorine-containing benzodioxocycloalkene-annelated thiophene as an acceptor unit

Koki Morikawa, Yutaka Ie, Makoto Karakawa, Yoshio Aso

2016/09

Fine structures of organic photovoltaic thin films probed by frequency-shift electrostatic force microscopy

Kento Araki, Yutaka Ie, Yoshio Aso, Takuya Matsumoto

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 55　No. 7　p. 070305-1-070305-3　2016/07　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Performance of Copolymers Having New Electron-Accepting Units

Yutaka Ie

2016/06　Research paper (other academic)

Electron-Accepting pi-Conjugated Systems for Organic Photovoltaics: Influence of Structural Modification on Molecular Orientation at Donor-Acceptor Interfaces

Seihou Jinnai, Yutaka Ie, Makoto Karakawa, Tom Aernouts, Yukihiro Nakajima, Shogo Mori, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 28　No. 6　p. 1705-1713　2016/03　Research paper (scientific journal)

Naphtho[1,2-c:5,6-c ']bis[1,2,5]thiadiazole-Containing pi-Conjugated Compound: Nonfullerene Electron Acceptor for Organic Photovoltaics

Shreyam Chatterjee, Yutaka Ie, Makoto Karakawa, Yoshio Aso

ADVANCED FUNCTIONAL MATERIALS　Vol. 26　No. 8　p. 1161-1168　2016/02　Research paper (scientific journal)

Time-resolved charge mapping for organic solar cell by Electrostatic Force Microscope

Araki Kento, Ie Yutaka, Aso Yoshio, Oyama Hiroshi, Matsumoto Takuya

Abstract of annual meeting of the Surface Science of Japan　Vol. 36　p. 48-48　2016

New p-Conjugated Systems for Single-molecule and Organic Thin-film Electronic Devices

Y. Ie, Y. Aso

2016/01　Research paper (other academic)

Naphthobisthiadiazole or Benzothiadiazole based pi-Conjugated Compounds for Non-fullerene Electron Acceptors in Organic Solar Cell

S. Chatterjee, Y. Ie, M. Karakawa, Y. Aso

2015/12

Synthesis, Properties, and Electrical Conductance of Insulated Oligothiophenes Having Spiro-Substituted Fluorenes

Y. Okamoto, Y. Ie, R. Yamada, H. Tada, Y. Aso

2015/12

Design Synthesis, and Properties of Novel Units for Single-Molecular Electronics

Y. Ie, Y. Aso

2015/12　Research paper (other academic)

Synthesis, properties, and OFET characteristics of pi-conjugated systems having tetrazolopyridine

S. Tamba, K. Hagiya, Y. Ie, Y. Aso

2015/12

Synthesis, Properties, and -Dimer Formation of Oligothiophenes Partially Bearing Orthogonally Fused Fluorene Units

Yutaka Ie, Yuji Okamoto, Saori Tone, Yoshio Aso

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 21　No. 46　p. 16688-16695　2015/11　Research paper (scientific journal)

Synthesis, and Properties of Oligothiophenes with Encapsulating Units for Single-Molecule Electronics

Y. Ie, Y. Aso

2015/11

Pyradinodithiazole: An Electron-Accepting Monomer Unit for Hole-Transporting and Electron-Transporting Conjugated Copolymers

Yutaka Ie, Shohei Sasada, Makoto Karakawa, Yoshio Aso

ORGANIC LETTERS　Vol. 17　No. 18　p. 4580-4583　2015/09　Research paper (scientific journal)

New fulleropyrrolidine derivatives contributing to the enhancement of an open circuit voltage for organic photovoltaic cells

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2015/09

Organic photovoltaic cells with an enlarged open circuit voltage using new fulleropyrrolidine derivatives

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2015/09

Synthesis, Properties, and Transistor Characteristics of Electron-Accepting pi-Conjugated Compounds Containing Dicyanomethylene

A. Uchida, Y. Ie, M. Nitani, Y. Aso

2015/09

Development of Electron-Transporting pi-Conjugated Systems for n-Type OFETs

Y. Ie, Y. Aso

2015/09　Research paper (other academic)

Thiophene-based Tripodal Anchor Units for Hole Transport in Single-Molecule Junctions with Gold Electrodes

Yutaka Ie, Kazunari Tanaka, Aya Tashiro, See Kei Lee, Henrique Rosa Testa, Ryo Yamada, Hirokazu Tada, Yoshio Aso

JOURNAL OF PHYSICAL CHEMISTRY LETTERS　Vol. 6　No. 18　p. 3754-3759　2015/09　Research paper (scientific journal)

A Universal Synthetic Methodology for Sub-Micrometer-Length Polythiophenes End-Functionalized with Anchor Groups

S. Tamba, Y. Ie, Y. Aso

2015/08

Synthesis, Properties, and Electrical Conductance of Insulated Oligothiophenes Having Spiro-Substituted Fluorene

Y. Okamoto, Y. Ie, R. Yamada, S. K. Lee, H. Tada, Y. Aso

2015/08

Development of Novel Functional Units toward Molecular Architectonics

Y. Ie, Y. Aso

2015/08　Research paper (other academic)

Low-Bandgap Amorphous Copolymers Based on Dithienosilole and Dioxocycloalkene-annelated Thiophene for Organic Photovoltaic Cells

Y. Ie, J. Huang, M. Karakawa, M. Saito, I. Osaka, Y. Aso

2015/07

Oligothiophenes with Encapsulating Units for Molecular Wires

Y. Ie, Y. Okamoto, Y. Aso

2015/07

Synthesis and Properties of Thiophene-Tetrazolopyridine-Based pi-Conjugated Compounds

S. Tamba, Y. Ie, Y. Aso

2015/07

Synthesis, Properties, and n-Type Transistor Characteristics of π-Conjugated Compounds Having a Carbonyl-Bridged Thiazole-Fused Polycyclic System

Y. Ie, C. Sato, M. Nitani, H. Tada, Y. Aso

J. Fluorine Chem.　2015/06　Research paper (scientific journal)

Electron-accepting pi-Conjugated Systems Based on Cyclic Imide and Cyano-substituted Benzothiadiazole for Non-fullerene Organic Photovoltaics

Yutaka Ie, Seihou Jinnai, Makoto Karakawa, Yoshio Aso

CHEMISTRY LETTERS　Vol. 44　No. 5　p. 694-696　2015/05　Research paper (scientific journal)

Decay of the Exciton in Quaterthiophene-Terminated Alkanethiolate Self-Assembled Monolayers on Au(111)

Hiroyuki S. Kato, Yoshinari Murakami, Yoshiaki Kiriyama, Riyo Saitoh, Takahiro Ueba, Takashi Yamada, Yutaka Ie, Yoshio Aso, Toshiaki Munakata

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 119　No. 13　p. 7400-7407　2015/04　Research paper (scientific journal)

A Series of π-Extended Thiadiazoles Fused with Electron-Donating Heteroaromatic Moieties: Synthesis, Properties, and Polymorphic Crystals

S.-i. Kato, T. Furuya, M. Nitani, N. Hasebe, Y. Ie, Y. Aso, T. Yoshihara, S. Tobita, Y. Nakamura

Chem. Eur. J.　2015/02　Research paper (scientific journal)

Charge detection on organic photovoltaic thin film by Electrostatic Force Microscopy

Araki Kento, Ie Yutaka, Aso Yoshio, Ohyama Hiroshi, Matsumoto Takuya

Abstract of annual meeting of the Surface Science of Japan　Vol. 35　p. 334-334　2015

18aPS-11 Electrical Conductance Measurement of Au Nano-Particle/Thiophene Compound using Multiprobe STM

Hobara R., Fukui N., Nakamura T., Tamba S., Ie Y., Aso Y., Hasegawa S.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 2299-2299　2015

Novel Donor–Acceptor p-Type Copolymers Based on Dioxoring-Annelated [c]Thiophene Units for Bulk-Heterojunction Organic Photovoltaics

J. Huang, Y. Ie, M. Karakawa, Y. Aso

2015/01　Research paper (other academic)

Air-Stable n-Type Organic Field-Effect Transistors Based on 4,9-Dihydro-s-indaceno[1,2-b:5,6-b ']dithiazole-4,9-dione Unit (vol 24, pg 3285, 2012)

Yutaka Ie, Masashi Ueta, Masashi Nitani, Norimitsu Tohnai, Mikiji Miyata, Hirokazu Tada, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 27　No. 2　p. 648-648　2015/01　Research paper (scientific journal)

Air-Stable n-Type Organic Field-Effect Transistors Based on 4,9-Dihydro-s-indaceno[1,2-b:5,6-b ']dithiazole-4,9-dione Unit (vol 24, pg 3285, 2012)

Yutaka Ie, Masashi Ueta, Masashi Nitani, Norimitsu Tohnai, Mikiji Miyata, Hirokazu Tada, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 27　No. 2　p. 648-648　2015/01

Modification of Graphene Field-Effect Transistor for Biosensor

R. Hayashi, T. Oe, Y. Kanai, Y. Ohno, K. Maehashi, K. Inoue, A. Tashiro, Y. Ie, Y. Aso, K. Matsumoto

2014/12

Development of New pi-Conjugated Systems towards Organic Semiconducting Materials

Y. Ie

2014/12　Research paper (other academic)

Naphthalene bis(dicarboximide)- and Perylene bis(dicarboximide)-based Acceptors: Synthesis, Properties, and Solar Cell Performance

S. Chatterjee, Y. Ie, M. Karakawa, Y. Aso

2014/12

Development of Organic Semiconducting Materials for Organic Photovoltaics

Y. Ie, Y. Aso

2014/12　Research paper (other academic)

Enhanced Photovoltaic Performance of Amorphous Copolymers Based on Dithienosilole and Dioxocycloalkene-annelated Thiophene

Jianming Huang, Yutaka Ie, Makoto Karakawa, Masahiko Saito, Itaru Osaka, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 26　No. 24　p. 6971-6978　2014/12　Research paper (scientific journal)

Enhanced Photovoltaic Performance of Amorphous Copolymers Based on Dithienosilole and Dioxocycloalkene-annelated Thiophene

Jianming Huang, Yutaka Ie, Makoto Karakawa, Masahiko Saito, Itaru Osaka, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 26　No. 24　p. 6971-6978　2014/12　Research paper (scientific journal)

Synthesis, Properties, and n-Type Transistor Characteristics of pi-Conjugated Compounds Having a Carbonyl-Bridged Thiazole-Fused Polycyclic System

Yutaka Ie, Chihiro Sato, Masashi Nitani, Hirokazu Tada, Yoshio Aso

CHEMISTRY-A EUROPEAN JOURNAL　Vol. 20　No. 50　p. 16509-16515　2014/12　Research paper (scientific journal)

Solution-processable n-Type Semiconducting Materials Containing a Carbonyl-bridged Thiazole-fused pi System

Yutaka Ie, Chihiro Sato, Masashi Nitani, Hirokazu Tada, Yoshio Aso

CHEMISTRY LETTERS　Vol. 43　No. 10　p. 1640-1642　2014/10　Research paper (scientific journal)

Solution-processable n-Type Semiconducting Materials Containing a Carbonyl-bridged Thiazole-fused pi System

Yutaka Ie, Chihiro Sato, Masashi Nitani, Hirokazu Tada, Yoshio Aso

CHEMISTRY LETTERS　Vol. 43　No. 10　p. 1640-1642　2014/10　Research paper (scientific journal)

Fluorine Atoms Containing Fulleropyrrolidine Derivatives for Organic Solar Cells

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2014/09

Novel Naphtho[2,3-c]thiophene-4,9-dione-Based Copolymers as p-Type Semiconductors for Bulk-Heterojunction Organic Photovoltaic Devices

J. Huang, Y. Ie, M. Karakawa, Y. Aso

2014/09　Research paper (other academic)

Synthesis, Properties, and n-Type Organic Photovoltaic Performances of Three-dimensional Electron-accepting Compounds Containing Perylene Bis(dicarboxyimide)s

Y. Ie, T. Sakurai, S. Jinnai, M. Karakawa, Y. Aso

2014/07　Research paper (other academic)

Photovoltaic Performances of Novel Donor–Acceptor Copolymers Based on Naphtho[2,3-c]thiophene-4,9-dione as Acceptor Units

J. Huang, Y. Ie, M. Karakawa, Y. Aso

2014/06

N-Phenyl-substituted Fulleropyrrolidine Derivatives for High Performance Organic Photovoltaics

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2014/06　Research paper (other academic)

Fulleropyrrolidine Derivatives for Organic Photovoltaics: Influence of Introduced Fluorine Atoms on Device Performance

T. Nagai, M. Karakawa, Y. Ie, K. Adachi, Y. Aso

2014/05

Synthesis, Properties, and n-Type Performances of Electronegative π-Conjugated Systems Having Fluorine Substituents

Y. Ie

2014/05　Research paper (other academic)

N-phenyl[60]fulleropyrrolidines: alternative acceptor materials to PC61BM for high performance organic photovoltaic cells

Makoto Karakawa, Takabumi Nagai, Kenji Adachi, Yutaka Ie, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY A　Vol. 2　No. 48　p. 20889-20895　2014　Research paper (scientific journal)

Electron-donor function of methanofullerenes in donor-acceptor bulk heterojunction systems

Yutaka Ie, Makoto Karakawa, Seihou Jinnai, Hiroyuki Yoshida, Akinori Saeki, Shu Seki, Shunsuke Yamamoto, Hideo Ohkita, Yoshio Aso

CHEMICAL COMMUNICATIONS　Vol. 50　No. 31　p. 4123-4125　2014　Research paper (scientific journal)

New Fulleropyrrolidine Derivatives as Acceptor Materials for Organic Photovoltaic Cells

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2014/01

Synthesis and Properties of Solution-Processable n-Type Organic Semiconductors Based on Carbonyl-Bridged Thiazole-Fused Ring

C. Sato, Y. Ie, Y. Aso

2014/01

Arenedithiocarboxyimide-Containing Extended pi-Conjugated Systems: Synthesis, Properties, and Application as n-Type Organic Semiconductor

S. Jinnai, Y. Ie, Y. Aso

2014/01

Synthesis, Properties, and Photovoltaic Performance of D–A Copolymers Based on Dioxocyclopentene-Annelated Thiophenes as Acceptor Units

J. Huang, Y. Ie, M. Karakawa, Y. Aso

2014/01

Low band-gap donor-acceptor copolymers based on dioxocyclopenta[c]thiophene derivatives as acceptor units: Synthesis, properties, and photovoltaic performances

Jianming Huang, Yutaka Ie, Makoto Karakawa, Yoshio Aso

Journal of Materials Chemistry A　Vol. 1　No. 47　p. 15000-15009　2013/12/21　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Performances of Novel D–A Copolymers Based on Naphtho[2,3-c]thiophene-4,9-dione as Acceptor Units

J. Huang, Y. Ie, M. Karakawa, Y. Aso

2013/12

Electron-Donor Function of [6,6]-Phenyl-C61-Butyric Acid Methyl Ester in Bulk Heterojunction Solar Cells

Y. Ie, M. Karakawa, H. Yoshida, A. Saeki, H. Ohkita, Y. Aso

2013/12　Research paper (other academic)

Three-dimensional electron-accepting compounds containing perylene bis(dicarboximide)s as n-type organic photovoltaic materials

Yutaka Ie, Takahiro Sakurai, Seihou Jinnai, Makoto Karakawa, Kouichi Okuda, Shogo Mori, Yoshio Aso

Chemical Communications　Vol. 49　No. 75　p. 8386-8388　2013/09/28　Research paper (scientific journal)

PCBM Alternative Acceptor Material for Organic Photovoltaic Cell

M. Karakawa, T. Nagai, K. Adachi, Y. Ie, Y. Aso

2013/09

Tripodal Anchoring Groups for Molecular Electronics

Y. Ie, T. Hirose, K, Tanaka, H. Nakamura, M. Kiguchi, N. Takagi, M. Kawai, Y. Aso

Chem. Commun.　2013/08　Research paper (other academic)

Synthesis, Properties, and n-Type Performances of Electronegative π-Conjugated Systems

Y. Ie

2013/07　Research paper (other academic)

Development of Solution-Processable n-Type Organic Semiconductors Based on Carbonyl-Bridged Thiazole-Fused Ring

C. Sato, Y. Ie, Y. Aso

RSC Advances　2013/07

Development of Thiophene-Based Three Dimensional pi-Electron Systems Containing Dicyanomethylene Groups

S. Jinnai, Y. Ie, Y. Aso

RSC Advances　2013/07

Synthesis, Properties, and Electron-Accepting Characteristics of New π-Conjugated System Bearing Dithiophthalimide Units

Y. Ie, S. Jinnai, M. NItani, M. Karakawa, Y. Aso

J. Mater. Chem. A　2013/07　Research paper (other academic)

4,9-Dihydro-s-indaceno[1,2-b:5,6-b']dithiazole-4,9-dione : A New Electronegative Unit for an n-Type Organic Semiconducting Materials

Y. Ie, M. Nitani, Y. Aso

Macromol. Chem. Phys.　2013/06　Research paper (other academic)

Development of Fluorine-Containing π-Conjugated Systems towards n-Type Organic Semiconducting Materials

Y. Ie

2013/04　Research paper (other academic)

Synthesis and Properties of a benzo[1,2-b:4,5-b’]dithiophene core pi-system that bears alkyl, alkylthio and alkoxy groups at 3,7-positions

Shinya Ota, Sojiro Minami, Koji Hirano, Tetsuya Satoh, Yutaka Ie, Shu Seki, Yoshio Aso, Masahiro Miura

RSC Adv.　2013/04　Research paper (scientific journal)

Arenedithiocarboxyimide-containing extended pi-conjugated systems with high electron affinity

Yutaka Ie, Seihou Jinnai, Masashi Nitania, Yoshio Aso

JOURNAL OF MATERIALS CHEMISTRY C　Vol. 1　No. 34　p. 5373-5380　2013　Research paper (scientific journal)

Synthesis and properties of a benzo[1,2-b:4,5-b ']dithiophene core pi-system that bears alkyl, alkylthio and alkoxy groups at 3,7-positions

Shinya Ota, Sojiro Minami, Koji Hirano, Tetsuya Satoh, Yutaka Ie, Shu Seki, Yoshio Aso, Masahiro Miura

RSC ADVANCES　Vol. 3　No. 30　p. 12356-12365　2013　Research paper (scientific journal)

Energy Level Modulation of HOMO, LUMO, and Band-Gap in Conjugated Polymers for Organic Photovoltaic Applications

Bong-Gi Kim, Xiao Ma, Chelsea Chen, Yutaka Ie, Elizabeth W. Coir, Hossein Hashemi, Yoshio Aso, Peter F. Green, John Kieffer, Jinsang Kim

ADVANCED FUNCTIONAL MATERIALS　Vol. 23　No. 4　p. 439-445　2013/01　Research paper (scientific journal)

Buckminsterfullerene derivatives bearing a fluoroalkyl group for use in organic photovoltaic cells

Makoto Karakawa, Takabumi Nagai, Tomomi Irita, Kenji Adachi, Yutaka Ie, Yoshio Aso

JOURNAL OF FLUORINE CHEMISTRY　Vol. 144　p. 51-58　2012/12　Research paper (scientific journal)

Characterization of Si etching with N-fluoropyridinium salt

Kentaro Tsukamoto, Junichi Uchikoshi, Masaki Otani, Toshinori Hirano, Yutaka Ie, Takabumi Nagai, Kenji Adachi, Kentaro Kawai, Kenta Arima, Mizuho Morita

CURRENT APPLIED PHYSICS　Vol. 12　p. S29-S32　2012/12　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Performance of Copolymers Based on Difluorodioxocyclopentene-Annelated Thiophene

Yutaka Ie, Jianming Huang, Yasunori Uetani, Makoto Karakawa, Yoshio Aso

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 51　No. 10　2012/10　Research paper (scientific journal)

π-Extended Thiadiazoles Fused with Thienopyrrole or Indole Moieties: Synthesis, Structures, and Properties

S.-i. Kato, T. Furuya, A. Kobayashi, M. Nitani, Y. Ie, Y. Aso, T. Yoshihara, S. Tobita, Y. Nakamura

J. Org. Chem.　2012/09　Research paper (scientific journal)

Short Synthesis of Alkyl-Substituted Acenes Using Carbonyl-Directed C-H and C-O Functionalization

Daiki Matsumura, Kentaroh Kitazawa, Seiya Terai, Takuya Kochi, Yutaka Le, Masashi Nitani, Yoshio Aso, Fumitoshi Kakiuchi

ORGANIC LETTERS　Vol. 14　No. 15　p. 3882-3885　2012/08　Research paper (scientific journal)

Air-Stable n-Type Organic Field-Effect Transistors Based on 4,9-Dihydro-s-indaceno[1,2-b:5,6-b ']dithiazole-4,9-dione Unit

Yutaka Ie, Masashi Ueta, Masashi Nitani, Norimitsu Tohnai, Mikiji Miyata, Hirokazu Tada, Yoshio Aso

CHEMISTRY OF MATERIALS　Vol. 24　No. 16　p. 3285-3293　2012/08　Research paper (scientific journal)

Synthesis, Properties, and Photovoltaic Performances of Donor-Acceptor Copolymers Having Dioxocycloalkene-Annelated Thiophenes As Acceptor Monomer Units

Yutaka Ie, Jianming Huang, Yasunori Uetani, Makoto Karakawa, Yoshio Aso

MACROMOLECULES　Vol. 45　No. 11　p. 4564-4571　2012/06　Research paper (scientific journal)

Functional oligothiophenes toward molecular wires in single-molecular electronics

Yutaka Ie, Masaru Endou, Aihong Han, Ryo Yamada, Hirokazu Tada, Yoshio Aso

PURE AND APPLIED CHEMISTRY　Vol. 84　No. 4　p. 931-943　2012　Research paper (scientific journal)

Novel fulleropyrrolidine derivatives for organic photovoltaic cells

M. Karakawa, T. Nagai, Y. Ie, Y. Aso

2012/01

Encapsulated oligothiophenes having electron-affinity characteristics

Masaru Endou, Yutaka Ie, Yoshio Aso

CHEMICAL COMMUNICATIONS　Vol. 48　No. 4　p. 540-542　2012/01　Research paper (scientific journal)

Development of conjugated oligomers based on carbonyl-bridged bithiazole for solution-processable n-type organic field-effect transistors

M. Nitani, Y. Ie, Y. Aso

2011/11

Novel fullerene derivatives including PCBM analogous for organic photovoltaic cells

M. Karakawa, T. Nagai, Y. Ie, Y. Aso

2011/11

Development of conjugated oligomers containing carbonyl-bridged bithiazole for solution-processable n-type organic field-effect transistors

M. Nitani, Y. Ie, Y. Aso

2011/11

Synthesis and properties of polythiophenes bearing oligothiophene side chains for organic electronics materials

M. Karakawa, Y. Ie, Y. Aso

2011/11

Synthesis, properties, and photovoltaic performances ofcopolymers containing difluorodioxocyclopentene-annelated thiophene or naphtho[2,3-c]thiophene-4,9-dione

Y. Ie, J. Huang, M. Karakawa, Y. Aso

2011/11

Organic photovoltaic properties of novel PCBM analogous

M. Karakawa, T. Nagai, Y. Ie, Y. Aso

2011/10

Synthesis, properties, and n-type OFET performances of electronegative π-conjugated systems containing dicyanomethylene-substituted cyclopenta[b]thiophene

Y. Ie, K. Nishida, M. Karakawa, Y. Aso

2011/10

Synthesis and Properties of Polymer Having Electronegative Terthiophene Pendants Based on Cyclopenta[c]thiophene

Yutaka Ie, Atsuki Yoshimura, Daisuke Takeuchi, Kohtaro Osakada, Yoshio Aso

CHEMISTRY LETTERS　Vol. 40　No. 9　p. 1039-1040　2011/09　Research paper (scientific journal)

Electron-Transporting Oligothiophenes Containing Dicyanomethylene-Substituted Cyclopenta[b]thiophene: Chemical Tuning for Air Stability in OFETs

Yutaka Ie, Kazufumi Nishida, Makoto Karakawa, Hirokazu Tada, Yoshio Aso

JOURNAL OF ORGANIC CHEMISTRY　Vol. 76　No. 16　p. 6604-6610　2011/08　Research paper (scientific journal)

Solution-processable n-type OFET materials based on carbonyl-bridged bithiazole and dioxocyclopentene-annelated thiophenes

M. Nitani, Y. Ie, H. Tada, Y. Aso

Chem. Asian. J.　2011/08　Research paper (scientific journal)

Synthesis, structure, properties, and single-molecule conductance of completely encapsulated oligothiophenes

Y. Ie, M. Endou, S. K. Lee, R. Yamada, H. Tada, Y. Aso

2011/07

Nature of Electron Transport by Pyridine-Based Tripodal Anchors: Potential for Robust and Conductive Single-Molecule Junctions with Gold Electrodes

Yutaka Ie, Tomoya Hirose, Hisao Nakamura, Manabu Kiguchi, Noriaki Takagi, Maki Kawai, Yoshio Aso

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY　Vol. 133　No. 9　p. 3014-3022　2011/03　Research paper (scientific journal)

Synthesis of Tripodal-anchor Units Having Pyridine or Amine Functional Groups and Their Adsorption Behavior on Metal Electrodes

Tomoya Hirose, Yutaka Ite, Yoshio Aso

CHEMISTRY LETTERS　Vol. 40　No. 2　p. 204-205　2011/02　Research paper (scientific journal)

Investigation of adsorption style on gold for pyridine-based tripodal molecules

Ie Yutaka, Hirose Tomoya, Nakamura Hisao, Kiguchi Manabu, Takagi Noriaki, Kawai Maki, Aso Yoshio

Abstracts of Symposium on Physical Organic Chemistry　Vol. 2011　p. 487-487　2011

Completely Encapsulated Oligothiophenes: Synthesis, Properties, and Single-Molecule Conductance

Yutaka Le, Masaru Endou, See Kei Lee, Ryo Yamada, Hirokazu Tada, Yoshio Aso

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 50　No. 50　p. 11980-11984　2011　Research paper (scientific journal)

Completely Encapsulated Oligothiophenes: Synthesis, Properties, and Single-Molecule Conductance

Yutaka Le, Masaru Endou, See Kei Lee, Ryo Yamada, Hirokazu Tada, Yoshio Aso

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION　Vol. 50　No. 50　p. 11980-11984　2011　Research paper (scientific journal)

Synthesis and Properties of Twisted Polythiophenes for Organic Electronics Materials

M. Karakawa, Y. Ie, Y. Aso

2011/01

Air-stable and Solution-processable FET Materials Based Electronegative Oligomers Having Dicyanomethylene Cyclopentene-annelated Thiophene

Y. Ie, K. Nishida, Y. Aso

2011/01

N-channel organic field-effect transistors containing carbonyl-bridged bithiazole derivative fabricated using polyfluorene derivatives as solution-processed buffer layers

Hirotake Kajii, Yutaka Ie, Masashi Nitani, Youhei Hirose, Yoshio Aso, Yutaka Ohmori

ORGANIC ELECTRONICS　Vol. 11　No. 12　p. 1886-1890　2010/12　Research paper (scientific journal)

Synthesis, Properties, and OFET Performances of Conjugated Oligomers Having Bis(dicyanomethylene)difluorocyclopentene-annelated Thiophenes

K. Nishida, Y. Ie, Y. Aso

2010/12

Development of Conjugated Oligomers Based on Carbonyl-Bridged Bithiazole for Solution-processable n-Type OFET Materials

M. Nitani, Y. Ie, Y. Aso

2010/12

Development of Electronegative pi-Conjugated Systems towards n-Type Organic Field-effect Transistor Materials

Y. Ie, Y. Aso

2010/12

Solution-processed n-type organic field-effect transistors based on electronegative oligothiophenes having fully oxo-substituted terthiophenes

Yutaka Ie, Masashi Nitani, Hirokazu Tada, Yoshio Aso

ORGANIC ELECTRONICS　Vol. 11　No. 11　p. 1740-1745　2010/11　Research paper (scientific journal)

Twisted Polythiophenes as a New Organic Memory Materials

M. Karakawa, Y. Ie, Y. Aso

2010/07

Synthesis, Properties, and n-Type Performances of p-Conjugated Systems Containing Carbonyl-Bridged Bithiazole

Y. Ie, M. Nitani, M. Karakawa, Y. Aso

2010/07

Development of Oligomers Containing Carbonyl-bridged Bithiazole as Solution-Processible n-Type Organic Field-Effect Transistor Materials

M. Nitani, Y. Ie, Y. Aso

2010/05

Air-stable N-Type Organic Field-Effect Transistors Based on Carbonyl Bridged Bithiazole Compound

Y. Ie, M. Nitani, M. Karakawa, Y. Aso

2010/05

Dendritic Oligothiophenes Bearing Perylene Bis(dicarboximide) Groups as Active Materials for Photovoltaic Device

Y. Ie, T. Uto, A. Saeki, S. Seki, S. Tagawa, Y. Aso

2010/05

STM fluorescence of porphyrin enhanced by a strong plasmonic field and its nanoscale confinement in an STM cavity

H. W. Liu, R. Nishitani, T. Z. Han, Y. Ie, Y. Aso, H. Iwasaki

PHYSICAL REVIEW B　Vol. 79　No. 12　2009/03　Research paper (scientific journal)

Development and Characterization of Tripodal Molecules Bearing Anchoring Groups, and Conductance Measurement of Single Molecule Employing Their Units

Hirose Tomoya, Ie Yutaka, Yao Atsushi, Takagi Noriaki, Kawai Maki, Kiguchi Manabu, Aso Yoshio

Abstracts of Symposium on Physical Organic Chemistry　Vol. 2009　p. 39-39　2009