Eiichi Kayahara

Profile Information

Affiliation: Graduate School of Advanced Science and Engineering, Hiroshima University

Researcher number: 10610553
ORCID iD: https://orcid.org/0000-0003-1663-5273
J-GLOBAL ID: 201401022937953897
researchmap Member ID: 7000009072

Research Areas

Nanotechnology/Materials / Synthetic organic chemistry /

Papers

Higher conductivity in doped ethylenedioxythiophene (EDOT) dimers with chalcogen-substituted end groups

Kota Onozuka, Tomoko Fujino, Tatsuya Miyamoto, Takashi Yamakawa, Hiroshi Okamoto, Hiroshi Akiba, Osamu Yamamuro, Eiichi Kayahara, Shigeru Yamago, Hiroshi Oike …

Journal of Materials Chemistry C, 12(35) 13956-13965, Aug 7, 2024
Synthesis of pi-Extended [1.1]Paracyclophanes, [1.1][n]PCP (n = 2, 3, and 4), and Their Through-space Conjugation

Eiichi Kayahara, Saya Hirata, Yoshiyuki Mizuhata, Yuka Yasuda, Yu Kusakabe, Hironori Kaji, Shigeru Yamago

May 14, 2024
非平面環状π共役分子の理論計算

茅原栄一

京都大学化学研究所スーパーコンピュータシステム研究成果報告書, 2024 5-5, Mar, 2024
Enhanced host–guest interaction between [10]cycloparaphenylene ([10]CPP) and [5]CPP by cationic charges

Eiichi Kayahara, Yoshiyuki Mizuhata, Shigeru Yamago

Beilstein Journal of Organic Chemistry, 20 436-444, Feb 23, 2024
Synthesis and physical properties of doubly-annulated [10]cycloparaphenylene

Liansheng Sun, Eiichi Kayahara, Tohru Nishinaga, Melissa Ball, Daniel Paley, Colin Nuckolls, Shigeru Yamago

Bulletin of the Chemical Society of Japan, 97(1) uoad011, Dec 1, 2023
Synthesis and characterization of novel hydrodigermenide and digermyne radical anion

Yoshiyuki Mizuhata, Wataru Ijichi, Ryohei Nishino, Tatsuhisa Kato, Eiichi Kayahara, Shigeru Yamago, Norihiro Tokitoh

Polyhedron, 244 116614, Nov, 2023
Generation and Characterization of a Tetraradical Embedded in a Curved Cyclic Paraphenylene Unit

Yuki Miyazawa, Zhe Wang, Sayaka Hatano, Ryukichi Takagi, Hideto Matsuoka, Naoka Amamizu, Yasutaka Kitagawa, Eiichi Kayahara, Shigeru Yamago, Manabu Abe

Chemistry - A European Journal, 29(42) e202301009, Jul 26, 2023
A Donor-Acceptor 10-Cycloparaphenylene and Its Use as an Emitter in an Organic Light-Emitting Diode

Dongyang Chen, Yoshimasa Wada, Yu Kusakabe, Liansheng Sun, Eiichi Kayahara, Katsuaki Suzuki, Hiroyuki Tanaka, Shigeru Yamago, Hironori Kaji, Eli Zysman-Colman

Organic Letters, 25(6) 998-1002, Feb 17, 2023
Synthesis of Twisted [n]Cycloparaphenylene by Alkene Insertion

Tomoaki Terabayashi, Eiichi Kayahara, Yichen Zhang, Yoshiyuki Mizuhata, Norihiro Tokitoh, Tohru Nishinaga, Tatsuhisa Kato, Shigeru Yamago

Angewandte Chemie - International Edition, 62(2) e202214960, Jan 9, 2023
Dynamic Au-C σ-Bonds Leading to an Efficient Synthesis of [ n]Cycloparaphenylenes (n = 9-15) by Self-Assembly

Yusuke Yoshigoe, Yohei Tanji, Yusei Hata, Kohtaro Osakada, Shinichi Saito, Eiichi Kayahara, Shigeru Yamago, Yoshitaka Tsuchido, Hidetoshi Kawai

JACS Au, 2(8) 1857-1868, Aug 22, 2022
1,3-Diradicals Embedded in Curved Paraphenylene Units: Singlet versus Triplet State and In-Plane Aromaticity

Yuki Miyazawa, Zhe Wang, Misaki Matsumoto, Sayaka Hatano, Ivana Antol, Eiichi Kayahara, Shigeru Yamago, Manabu Abe

Journal of the American Chemical Society, 143(19) 7426-7439, May 19, 2021
含歪みπ共役化合物の合成とその物性評価

茅原栄一

京都大学化学研究所スーパーコンピュータシステム研究成果報告書, (2020) 6-6, Mar, 2021
Synthesis and Properties of a Cyclohexa‐2,7‐anthrylene Ethynylene Derivative

Hironori Matsuki, Keisuke Okubo, Yuta Takaki, Yoshiki Niihori, Masaaki Mitsui, Eiichi Kayahara, Shigeru Yamago, Kenji Kobayashi

Angewandte Chemie International Edition, 60(2) 998-1003, Nov 3, 2020
Ultrafast Exciton Self-Trapping and Delocalization in Cycloparaphenylenes: The Role of Excited-State Symmetry in Electron-Vibrational Coupling

Juno Kim, Ryohei Kishi, Eiichi Kayahara, Woojae Kim, Shigeru Yamago, Masayoshi Nakano, Dongho Kim

Angewandte Chemie - International Edition, 59(39) 16989-16996, Sep 21, 2020
Syntheses of Tetrasubstituted [10]Cycloparaphenylenes by a Pd-catalyzed Coupling Reaction. Remarkable Effect of Strain on the Oxidative Addition and Reductive Elimination

Eiichi Kayahara, Masaya Nakano, Liansheng Sun, Kosuke Ishida, Shigeru Yamago

Chemistry - An Asian Journal, 15(16) 2451-2455, Aug 17, 2020
Selective and gram-scale synthesis of [8]cycloparaphenylene

Tatsuya Kawanishi, Kosuke Ishida, Eiichi Kayahara, Shigeru Yamago

Journal of Organic Chemistry, 85(4) 2082-2091, Feb 21, 2020
Size-Dependent Relaxation Processes of Photoexcited [n]Cycloparaphenylenes (n = 5-12): Significant Contribution of Internal Conversion in Smaller Rings

Mamoru Fujitsuka, Chao Lu, Bo Zhuang, Eiichi Kayahara, Shigeru Yamago, Tetsuro Majima

Journal of Physical Chemistry A, 123(22) 4737-4742, Jun 6, 2019
含歪みπ共役化合物の合成とその物性評価

茅原栄一

京都大学化学研究所スーパーコンピュータシステム研究成果報告書, (2018) 8-8, Jan, 2019
Synthesis and Physical Properties of Polyfluorinated Cycloparaphenylenes

Sigma Hashimoto, Eiichi Kayahara, Yoshiyuki Mizuhata, Norihiro Tokitoh, Katsuhiko Takeuchi, Fumiyuki Ozawa, Shigeru Yamago

Organic Letters, 20(18) 5973-5976, Sep 21, 2018
Strain-Induced Double Carbon–Carbon Bond Activations of Cycloparaphenylenes by a Platinum Complex: Application to the Synthesis of Cyclic Diketones

Eiichi Kayahara, Toshiki Hayashi, Katsuhiko Takeuchi, Fumiyuki Ozawa, Keita Ashida, Sensuke Ogoshi, Shigeru Yamago

Angewandte Chemie - International Edition, 57(35) 11418-11421, Aug 27, 2018

Misc.

Theoretical Study of Non-planar Cyclic π-Conjugated Molecules

2022 6-6, Mar, 2023
Synthesis and Properties of a Cyclohexa‐2,7‐anthrylene Ethynylene Derivative

Hironori Matsuki, Keisuke Okubo, Yuta Takaki, Yoshiki Niihori, Masaaki Mitsui, Eiichi Kayahara, Shigeru Yamago, Kenji Kobayashi

Angewandte Chemie, 133(2) 1011-1016, Nov 3, 2020
Synthesis and Reactions of Carbon Nanohoop

Shigeru Yamago, Eiichi Kayahara

Journal of Synthetic Organic Chemistry, Japan, 77(11) 1147-1158, Nov 1, 2019 Peer-reviewed
Strain‐Induced Double Carbon–Carbon Bond Activations of Cycloparaphenylenes by a Platinum Complex: Application to the Synthesis of Cyclic Diketones

Eiichi Kayahara, Toshiki Hayashi, Katsuhiko Takeuchi, Fumiyuki Ozawa, Keita Ashida, Sensuke Ogoshi, Shigeru Yamago

Angewandte Chemie, 130(35) 11588-11591, Jul 31, 2018
Synthesis of Strained π-Conjugated Molecules and Evaluation of their Physical Properties

Kayahara, Eiichi

2017 7-7, Mar, 2018
Bromination of Cycloparaphenylenes: Strain‐Induced Site‐Selective Bis‐Addition and Its Application for Late‐Stage Functionalization

Eiichi Kayahara, Rui Qu, Shigeru Yamago

Angewandte Chemie, 129(35) 10564-10568, Jul 19, 2017
Regioselective Synthesis and Characterization of Multinuclear Convex‐Bound Ruthenium‐[n]Cycloparaphenylene (n=5 and 6) Complexes

Eiichi Kayahara, Vijay Kumar Patel, Audrey Mercier, E. Peter Kündig, Shigeru Yamago

Angewandte Chemie, 128(1) 310-314, Oct 23, 2015
Cycloparaphenylenes and Carbon Nanorings

Shigeru Yamago, Eiichi Kayahara, Sigma Hashimoto

Polycyclic Arenes and Heteroarenes, 143-162, Sep 12, 2015
New organic chemistry of three-dimensional π-conjugated compounds

Shigeru Yamago, Eiichi Kayahara, Takahiro Iwamoto

Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry, 72(9) 992-1005, Sep 1, 2014
Synthesis, Characterization, and Properties of [4]Cyclo‐2,7‐pyrenylene: Effects of Cyclic Structure on the Electronic Properties of Pyrene Oligomers

Takahiro Iwamoto, Eiichi Kayahara, Nobuhiro Yasuda, Toshiyasu Suzuki, Shigeru Yamago

Angewandte Chemie, 126(25) 6548-6552, May 13, 2014
ついに完成！世界最小の炭素ナノリング－五つのベンゼン環をリング状につなげる合成法の開発－

茅原栄一

化学, 69 32-36, 2014
Pauson-Khand型反応 Franck-Condon状態有機電界発光素子虚数振動

森本積, 茅原栄一, 山子茂, 舟橋正浩, 松原浩

有機合成化学協会誌, 72(9) 1047-1047, 2014
Isolation and Characterization of the Cycloparaphenylene Radical Cation and Dication

Eiichi Kayahara, Takahiko Kouyama, Tatsuhisa Kato, Hikaru Takaya, Nobuhiro Yasuda, Shigeru Yamago

Angewandte Chemie, 125(51) 13967-13971, Nov 19, 2013
Synthesis of Strained π-Conjugated Molecules and Evaluation of their Physical Propaties

Kayahara, Eiichi

2012 13-14, Mar, 2013
Highly Controlled Living Radical Polymerization through Dual Activation of Organobismuthines

Shigeru Yamago, Eiichi Kayahara, Masashi Kotani, Biswajit Ray, Yungwan Kwak, Atsushi Goto, Takeshi Fukuda

Angewandte Chemie, 119(8) 1326-1328, Feb 5, 2007

Presentations

109

Synthesis of cyclic isocyanide oligomer by the insertion of isocyanide into cyclic paraphenylene palladium complexes

丸浩輔, 茅原栄一, 山子茂

日本化学会春季年会講演予稿集(Web), 2023
Synthesis of [1.1]Paracyclophanes Mediated by Cyclic Platinum Complex

平田沙弥, 茅原栄一, 加藤立久, 山子茂

日本化学会春季年会講演予稿集(Web), 2023
Synthesis and In-plane Moebius Aromaticity of Cycloparaphenylene Carbenium Ion

茅原栄一, 濱田昂輝, 山子茂

基礎有機化学討論会要旨集, 2023
Synthesis of Cyclic π-Conjugated Oligomers by the Insertion of Alkyne and Isocyanide into Cyclic Paraphenylene Metal Complexes

丸浩輔, ZHENG Leshang, 茅原栄一, 山子茂

基礎有機化学討論会要旨集, 2023
Identification of CPP carbenes by ESR

梶川空, 村田涼, 茅原栄一, 山子茂, 安倍学

電子スピンサイエンス学会年会講演要旨集, 2023
Synthesis and Multistep Oxidations of a [6]Cycloparaphenylene Derivative with Bulky Alkoxy Groups

岩崎郁哉, 井手智仁, 加藤立久, 茅原栄一, 山子茂, 土戸良高, 河合英敏

基礎有機化学討論会要旨集, 2023
Direct synthesis of cyclic paraphenylene diketones through cyclic platinum complexes

森隆博, 茅原栄一, 加藤立久, 山子茂

日本化学会春季年会講演予稿集(Web), 2022
Solvent Effects on the Self-Assembled p-Stacked Dimer of a Cyclohexa-2,7-(4,5-diaryl)anthrylene Ethynylene Derivative and Inclusion of [9]CPP

永島広大, 河合信之輔, 茅原栄一, 山子茂, 小林健二

基礎有機化学討論会要旨集, 2022
Inclusion of C₆₀@[10]CPP in a Cyclohexa-2,7-(4,5-diaryl)anthrylene Ethynylene Derivative

米谷樹, 新堀佳紀, 三井正明, 茅原栄一, 山子茂, 小林健二

基礎有機化学討論会要旨集, 2022
Novel Cycloparaphenylenes Synthesis Method via Reorganization of Macrocyclic Gold Complexes Based on Dynamic Au-C Bonds

丹治洋平, 畑優成, 吉越裕介, 斎藤慎一, 茅原栄一, 山子茂, 小坂田耕太郎, 土戸良高, 河合英敏

基礎有機化学討論会要旨集, 2022
Synthesis of Cycloparaphenylene Ketone Using Platinum and Gold Complexes

平田沙弥, 森隆博, 茅原栄一, 土戸良高, 河合英敏, 山子茂

基礎有機化学討論会要旨集, 2022
Reduction of a cyclic paraphenylene diketone and structural elucidation of the reduced product

森隆博, 茅原栄一, 加藤立久, 山子茂

基礎有機化学討論会要旨集, 2021
Synthesis and Physical Properties of Alkene-inserted Cycloparaphenylenes

茅原栄一, 寺林智昭, 山子茂

基礎有機化学討論会要旨集, 2021
Structure and Electronic Character of Multi-radicals Embedded in Curved Paraphenylene Unit

宮澤友樹, WANG Zhe, 松本岬, 波多野さや佳, ANTOL Ivana, 茅原栄一, 山子茂, 安倍学

基礎有機化学討論会要旨集, 2021
Self-Assembled π-Stacked Dimer of a Cyclohexa-2,7-(4,5-diaryl)anthrylene Ethynylene Derivative and Inclusion of [9]CPP

永島広大, 河合信之輔, 茅原栄一, 山子茂, 小林健二

基礎有機化学討論会要旨集, 2021
環状ヘキサ2,7-(4,5-ジアリール)アントリレンエチニレン誘導体の自己会合二量体の形成と[9]CPP包接

永島広大, 河合信之輔, 小林健二, 茅原栄一, 山子茂

中部化学関係学協会支部連合秋季大会講演予稿集, 2021
対角位置をブタジインで置換した環状ヘキサ-2,7-(4,5-ジアリール)アントリレンエチニレン誘導体の合成と[10]CPP包接

米谷樹, 松木洋憲, 新堀佳紀, 三井正明, 茅原栄一, 山子茂, 小林健二

中部化学関係学協会支部連合秋季大会講演予稿集, 2021
Synthesis of Cyclohexa-2,7-Anthrylene Ethynylene Derivative Partially Replaced by Butadiyne Bonds and Inclusion of [10]CPP

米谷樹, 松木洋憲, 新堀佳紀, 三井正明, 茅原栄一, 山子茂, 小林健二

日本化学会春季年会講演予稿集(Web), 2021
環状ヘキサ-2,7-(4,5-ジアリール)アントリレンエチニレン誘導体の合成と性質

小林健二, 永島広大, 米谷樹, 松木洋憲, 河合信之輔, 新堀佳紀, 三井正明, 茅原栄一, 山子茂

中部化学関係学協会支部連合秋季大会講演予稿集, 2021
Synthesis and In-plane Aromaticity of Dications of Cycloparaphenylene Derivatives Having Moebius Topology

寺林智昭, 茅原栄一, 加藤立久, 山子茂

日本化学会春季年会講演予稿集(CD-ROM), 2020

Research Projects

全共役型環状高分子の化学の開拓

戦略的な研究開発の推進創発的研究支援事業, 科学技術振興機構, 2022 - 2028

茅原栄一
大環状共役系における電子の非局在性の荷電・スピン・励起状態依存性の研究

化学研究所国際共同利用・共同研究拠点活動（基幹分野、発展的研究）, 京都大学化学研究所, Apr, 2023 - Mar, 2024

茅原栄一, 山子茂
高密度共役の実現のための新規環状π共役分子の創製

科学研究費助成事業学術変革領域研究(A), 学術変革領域研究(A), 日本学術振興会, Sep, 2021 - Mar, 2023

茅原栄一
Synthesis of cyclic p-conjugated polymer based on the carbon-carbon cleavage of cycloparaphenyelens

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021

Kayahara Eiichi
Creation of High-order Structures Based on Cycloparaphenylene Radical Cations and Dications and Elucidation of their Function

Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory), Grant-in-Aid for Challenging Research (Exploratory), Japan Society for the Promotion of Science, Jun, 2018 - Mar, 2020

KAYAHRA EIICHI
Synthesis of highly strained cycloparaphenylenes and elucidation of their properties

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2017

Kayahara Eiichi
Synthesis of cyclic pi-conjugated molecules through the template synthetic approach and elucidation of their properties

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, Apr, 2012 - Mar, 2014

KAYAHARA Eiichi, YAMAGO Shigeru
ヘテロ元素の特性を生かしたリビングラジカル重合によるナノ構造分子の精密制御合成

科学研究費助成事業特別研究員奨励費, 特別研究員奨励費, 日本学術振興会, 2008 - 2010

茅原栄一

Industrial Property Rights

WO2015-111611 シクロパラフェニレン化合物およびその製造方法並びに中間体化合物

山子茂, 茅原栄一

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