高知県公立大学法人 高知工科大学 理工学群
Kochi University of Technology ~ Functional Chemistry ~
Functional Polymer Chemistry
Selected
2025
95. Elastic Molecular Crystals
Collaborated Research XXX, Keigo Yano, XXX, Shotaro Hayashi
TBA
In Prep., Vol. XX, pp. XXX, 2025.
94. Aggregation-Induced Emission
Collaborated Research XXX, Mahiro Nakabayashi, XXX, Shotaro Hayashi
TBA
Submitted, Vol. XX, pp. XXX, 2025.
93. Salient
Tomohiro Seki,* Takumi Okada, Masahiro Ikeda, Kaisei Yamamoto, Shotaro Hayashi, Yuko Kishida, Hidehiro Uekusa
Light-off Salient Effect: Thermal Phase Transitions of Molecular Crystals Controlled by Photoirradiation
Journal of the American Chemical Society, Vol. XX, pp. XXX, 2025.
92. Solid-state Emission
Mahiro Nakabayashi, Takumi Matsuo,* Shotaro Hayashi*
Pyridyl/Phenyl-Appended Acrylonitrile π-Conjugated Molecules: Thermally Stable Organic Crystals for Amplified Spontaneous Emission
Chemistry-A European Journal, Vol. 31, pp. e202501326, 2025.
Selected as Hot Topics of Angewandte Chemie International Edition
91. Elastic Molecular Crystals
Hinako Kato, Yoji Horii,* Chiharu Watanabe, Toshiyuki Sasaki, Kouhei Ichiyanagi, Mariko Noguchi, Hiroki Fujimori, Taro Yamamoto, Hal Suzuki, Yuichi Hirai, Takahito Ohmura, Keigo Yano, Shotaro Hayashi, Takashi Kajiwara
Molecular Thermal Engine based on a Highly Flexible Elastic Crystal
Journal of the American Chemical Society, Vol. 147, pp. 20582-20589, 2025.
90. Crystal Photonics
Takumi Matsuo,* Shotaro Hayashi*
Polymorphism-Induced Multi-Functional Crystal Photonics Achieved by a Highly Luminescent Benzofuranyl Molecule having Tetrafluorophenylene Core
Journal of Materials Chemistry C, Vol. 13, pp. 10944-10953, 2025.
89. Flexible Molecular Crystals
Keigo Yano, Takumi Matsuo,* Shotaro Hayashi*
2D Elastic Fluorinated Donor–Acceptor Type π-Conjugated Molecular Crystals and Its Optical Crystal-Polymer Hybrid Film
Journal of Materials Chemistry C, Vol. 13, pp. 9527-9535, 2025.
88. Optical Waveguides
Armando Navarro-Huerta, Takumi Matsuo, Alexander S. Mikherdov, Jan Blahut, Erika Bartůňková, Pingyu Jiang, Martin Dračínský, Simon Teat, Mingoo Jin,* Shotaro Hayashi,* Braulio Rodríguez-Molina*
Optical Waveguiding Charge-Transfer Cocrystals: Examining the Impact of Molecular Rotations on Their Photoluminescence
Journal of the American Chemical Society, Vol. 147, pp. 8343-8349, 2025.
87. Flexible Molecular Crystals
Yuxuan Zhao, Norihisa Hoshino, Keigo Yano, Shotaro Hayashi,* Tomoyuki Akutagawa*
Elastic Properties of Dichloro- and Dibromo-anthracene Crystals
Crystal Growth & Design, Vol. 25, pp. 1952-1960, 2025.
86. Laser
Takumi Matsuo,* Soichiro Azuma, Mahiro Nakabayashi, Fumio Sasaki, Shotaro Hayashi*
Cyano-Substituted Distyrylbenzene Derivative for Laser Media: High Solid-State Luminescence and Processabilities by tert-Butyl Appending Design
Advanced Optical Materials, Vol. 14, pp. 2402701, 2025.
Selected as Hot Topics of Angewandte Chemie International Edition
プレスリリース「分子デザインにより 高機能な有機単結晶レーザーを実現」2025年2月17日
OPTRONICS 高知工科大ら，高機能な有機単結晶レーザーを実現 2025年2月19日
日刊工業新聞 高知工科大など、有機単結晶レーザー開発 分子デザインで高機能 2025年3月21日
85. Crystal Enginnering
Saki Tanaka, Takumi Matsuo,* Shotaro Hayashi*
Crystal Structures of Highly Electron-Accepting Naphtho[1,2-c:5,6-c]bis[1,2,5]chalcogendiazole
Crystal Research and Technology, Vol. 60, pp. 2400204, 2025.
2024
84. Elastic Organic Crystals
Koki Ikeda, Takumi Matsuo,* Keigo Yano, Shotaro Hayashi*
Luminescent Anthracene-based Elastic Mixed Molecular Crystals for Flexible and FRET-Assisted Optical Waveguides
Bulletin of the Chemical Society of Japan, Vol. 97, pp. uoae115, 2024.
83. Fluorophore
Keisuke Shimada, Takumi Matsuo,* Shotaro Hayashi*
Highly and Deep Red-luminescent Bisphenylamine-appended Benzocarcogendiazole Fluorophores
ChemPhysChem, Vol. 25, pp. e202400426, 2024.
82. Bent Crystals
Tomohiro Seki,* Shiori Kobayashi, Rintaro Ishikawa, KeigoYano, Takumi Matsuo, Shotaro Hayashi
Preparation of Intrinsically Fragile Bent Crystals
Chemical Science, Vol. 14, pp. 12258-12263, 2024.
Selected as Outside Front Cover of Chemical Science
81. Microphotonics
Takumi Matsuo*, Hiroki Tanikubo, Shotaro Hayashi*
Facile Wet-Process to Free-Standing Whispering Gallery Mode Resonators Mixed with Spherical Silica Gel and π-Conjugated Molecules
Advanced Optical Materials, Vol. 13, pp. 2401119, 2024.
プレスリリース「塗布法による WGM 光共振器の合成 量産化と大面積化へ向けた簡便なプロセスを実現」2024年7月22日
OPTRONICS 「囁き声」から生まれた⁉微細共振器を簡便に作製 2024年7月22日
NIKKEI Tech Foresight 高知工科大、WGM光共振器を高効率に作製 次世代光源 2024年8月6日
80. Sequence-Defined Polymers
Syunya Inayama, Shotaro Hayashi*
Iterative Click-Addition Process for Urethane-based 1st-5th Dendrons
ACS Applied Polymer Materials, Vol. 6, pp. 7329-7337, 2024.
79. Laser
Takumi Matsuo,* Shotaro Hayashi*
Lasing in Low-Dimensional Crystals of a Fumaronitrile-Based Luminogen
The Journal of Physical Chemistry Letters, Vol. 15, pp. 3968-3974, 2024.
プレスリリース「有機マイクロレーザーをマイクロ通信デバイスへ
自在な発光分子結晶の低次元化を実現」2024年4月19日
OPTRONICS 高知工科大，発光分子結晶を低次元化しレーザー励起 2024年4月22日
78. Crystal Enginnering
Hiroki Tanikubo, Takumi Matsuo, Shotaro Hayashi*
Light-induced E-Z Isomerization of Anthracene-appended p-Methoxyphenyl Acrylonitrile giving Fluorescent Crystals
Journal of Crystal Growth, Vol. 631, pp. 127595, 2024.
https://www.sciencedirect.com/science/article/pii/S0022024824000307?via%3Dihub
77. Polycondensation
Yuto Hino, Shotaro Hayashi*
Thiophenoanthracene-based Conjugated Polymers via Direct Arylation Polycondensation
Journal of Polymer Science, Vol. 62, pp. 1915-1921, 2024.
76. Crystal Growth
Satoshi Watanabe,* Keigo Ono, Rinsuke Nakayama, Kaho Tajiri, Shun Inouchi, Takumi Matsuo, Masashi Kunitake, Shotaro Hayashi*
Phase Diagrams of Anthracene Derivatives in Pyridinium Ion Liquids
ChemPhysChem, Vol. 25, pp. e202300867, 2024.
75. Thermoelectrics
Masakazu Nakamura,* Hirotaka Kojima, Ryo Abe, Yongyoon Cho, Shotaro Hayashi, Masahiro Hiramoto
Giant Seebeck Effect over 0.1 V/K – Is this an Intrinsic Phenomenon in Organic Semiconductors? –
Faraday Discussion, Vol. 250, pp. 361-367, 2024.
2023
74. Sequence-Defined Polymers
Haruka Yamauchi, Syunya Inayama, Mahiro Nakabayashi, Shotaro Hayashi*
Systematic Order-Made Synthesis of Sequence-Defined Polyurethanes with Length, Types, and Topologies
ACS Macro Letters, Vol. 12, pp. 1264-1271, 2023.
プレスリリース「長さ、種類、そして“かたち”が配列定義されたポリウレタンの合成に成功
“低環境負荷”な方法で高度データストレージの実現へ」2023年9月13日
73. Crystal Engineering
Yasutaka Suzuki,* Satoshi Koga, Kana Kitaura, Jun Kawamata, Keigo Yano, Norihisa Hoshino, Tomoyuki Akutagawa, Shotaro Hayashi*
Noninvasive Three-dimensional Assessment of Single Molecular Crystals using Multiphoton Microscopic Observation and Their Deformation-induced Emission Characteristics
Langmuir, Vol. 39, pp. 11646-11652, 2023.
プレスリリース「多光子顕微鏡技術を利用し結晶の非破壊な３次元観察を実現
―弾性結晶の機械的操作で内部発光が起こることを発見―」2023年9月6日
OPTRONICS 山口大ら，多光子顕微鏡で分子結晶内部を取得 2023年9月6日 15時24分
72. Crystal Engineering
Mahiro Nakabayashi, Takumi Matsuo,* Shotaro Hayashi*
Non-covalent Supramolecular 1D Alternating Copolymer in Crystal toward 2D Anisotropic Photon Transport
Chemistry-A European Journal, Vol. 29, pp. e202302351, 2023.
プレスリリース「二次元結晶中の超分子ポリマー配列が異方的な光輸送機能を実現!」2023年8月4日
71. Flexible Molecular Crystals
Takumi Matsuo,* Junpei Kuwabara, Takaki Kanbara, Shotaro Hayashi*
Flexible and Red-Emissive Organic Single Crystal Micro-Resonator for Efficient Active Waveguides
The Journal of Physical Chemistry Letters, Vol. 14, pp. 6577-6582, 2023.
org/10.1021/acs.jpclett.3c01495
70. Elastic Organic Crystals
Takumi Matsuo, Koki Ikeda, Shotaro Hayashi*
Flexible Förster Resonance Energy Transfer-assisted Optical Waveguide based on Elastic Mixed Molecular Crystals
Aggregate, Vol. 4, pp. e378, 2023.
10.1002/agt2.378
プレスリリース「1%のドーパントが弾性分子結晶の光輸送機能を15 倍以上に!」2023年6月29日
マイナビニュース 高知工科大、「弾性分子結晶」の光輸送機能を15倍に向上させる手法を開発 2023年7月6日 14時41分
69. Polymer Materials
Yamato Yoshino, Mahiro Nakabayashi, Shotaro Hayashi*
BF3-Assisted Insolubilization Switching toward Bilayer π-Conjugated Polymer Film
Reactive and Functional Polymers, Vol. 186, pp. 105554, 2023.
org/10.1016/j.reactfunctpolym.2023.105554
68. Photonics
Takumi Matsuo*, Shotaro Hayashi, Fumio Sasaki, Hisao Yanagi
Efficient Optical Waveguiding and Lasing in Needle Crystals of Thiophene/phenylene Co-oligomers Grown in Solution Phase
Japanese Journal of Applied Physics, Vol. 62, pp. 030903, 2023.
10.35848/1347-4065/acbf8f
67. Flexible Molecular Crystals
Yusuke Makino, Masaki Yoshida, Shotaro Hayashi, Toshiyuki Sasaki, Satoshi Takamizawa, Atsushi Kobayashi, Masako Kato*
Elastic and Bright Assembly-induced Luminescent Crystal of Platinum(II) Complexes with Near-unity Emission Quantum Yield
Dalton Transactions, Vol. 52, pp. 8864-8872, 2023.
Selected as Outside Front Cover of Dalton Transactions
66. Mechanochromic Materials
Hiroki Tanikubo ‡, Takumi Matsuo ‡, Shotaro Hayashi*
Alkyl-chain Bridged Acrylonitrile-appended Anthracene Chromophore toward Mechanically-induced Bathochromic Shift
Bulletin of the Chemical Society of Japan, Vol. 96, pp. 178-182, 2023.
10.1246/bcsj.20220322
‡ Authors with equal contribution.
65. Microphotonics
Yuto Hino, Takumi Matsuo, Shotaro Hayashi*
Unique 2D Face Topologies in Naphthyl-appended Naphtho[k]fluoranthene-based 3D Crystals for Optical Waveguide
Advanced Optical Materials, Vol. 12, pp. 2201810, 2023.
Selected as Outside Front Cover of Advanced Optical Materials
64. Microresonator
Shuai Zhao, Hiroshi Yamagishi, Yasuo Norikane, Shotaro Hayashi, Yohei Yamamoto*
Optical Control of Aggregation-Induced Emission Shift by Photoisomerizable Precipitant in a Liquid Droplet Microresonator
Advanced Optical Materials, Vol. 11, pp. 2202134, 2023.
2022
63. New Molecules
Yuto Hino, Shotaro Hayashi*
Mesityl-Appended 1,4-Bis(β-acrylonitrile)-2,5-dimethoxybenzene: Blue and Green Fluorescent Crystals from a Soluble Donor–Acceptor Molecular System
ChemistrySelect, Vol. 7, pp. e202201489, 2022.
Selected as Outside Front Cover of ChemistrySelect
62. Organic Synthesis
Mahiro Nakabayashi, Nagatoshi Nishiwaki, Akitaka Ito, Shotaro Hayashi,* Kento Iwai*
Efficient Synthesis of α-Nitro-β-Dialdimine Ligands via Equilibrium– Controlling Approach
Tetrahedron Letters, Vol. 102, pp. 153948, 2022.
org/10.1016/j.tetlet.2022.153948
61. Crystal Engineering
Shotaro Hayashi*
Elastic Molecular Crystals: Their Deformation-induced Reversible Unit Cell Changes with Specific Poisson Effect
Bulletin of the Chemical Society of Japan, Vol. 95, pp. 721-727, 2022.
10.1246/bcsj.20220040
Selected Paper of Bulletin of the Chemical Society of Japan
Highlighted in News and Topics @KUT
60. Fluorescent Polymers
Haruka Yamauchi ‡, Mahiro Nakabayashi ‡, Maiko Kawada, Yuto Hino, Syunya Inayama, Hiroki Tanikubo, Shotaro Hayashi*
Synthesis of Acrylonitrile Side Chain-appended π-Conjugated Polymers by a Suzuki Cross-coupling Polycondensation and a Knoevenagel Condensation, and Their Optical Properties
Materials Advances, Vol. 3, pp. 3835-3841, 2022.
ma/d2ma00113f
‡ Authors with equal contribution.
Selected as Outside Front Cover of Materials Advances
59. Networks
Haruka Yamauchi, Atsushi Asano, Shotaro Hayashi*
Synthesis of Covalent Boroxine Frameworks by Polycondensation of Tetrahydroxydiboron
HETEROCYCLES, Vol. 104, pp. 979-986, 2022.
58. Flexible Molecular Crystals
Shuai Zhao, Hiroshi Yamagishi, Osamu Oki, Yuta Ihara, Naoki Ichiji, Atsushi Kubo, Shotaro Hayashi,* Yohei Yamamoto*
Mechanically Flexible and Optically Tunable Organic Crystal Resonator
Advanced Optical Materials, Vol. 10, pp. 2101808, 2022.
2021
57. Crystal Engineering
Yuto Hino, Shotaro Hayashi*
Thermo-triggered Domino-like Single-Crystal-to-Single-Crystal Phase Transition from Face-to-edge to Face-to-face Packing of Anthracene
Chemistry-A European Journal, Vol. 27, pp. 17595-17600, 2021.
Selected as Inside Front Cover of Chemistry-A European Journal
プレスリリース「分子結晶でドミノの様な単結晶ー単結晶相転移の実現」2021年11月5日
Selected as Hot Paper of Chemistry - A European Journal
56. Sensing
Airong Qiagedeer, Hiroshi Yamagishi,* Shotaro Hayashi, Yohei Yamamoto*
Polymer Optical Microcavity Sensor for Volatile Organic Compounds with Distinct Selectivity toward Aromatic Hydrocarbons
ACS Omega, Vol. 6, pp. 21066-21070, 2021.
10.1021/acsomega.1c02749
55. New Molecules
Shotaro Hayashi*
Cyano-substituted Oligo(p-phenylene-vinylene)s having Linear and Branched Octyloxy Groups: Control of Aggregation and Emitting Properties via C8 Alkyl Chain Difference
Molecular Systems Design & Engineering, Vol. 6, pp. 503-507, 2021.
me/d1me00020a
54. Crystal Engineering
Shotaro Hayashi*
Curving Deformation-induced Photoluminescence Changes and Anisotropy Analysis in Elastic Organic Crystals
CrystEngComm, Vol. 23, pp. 5763-5767, 2021.
ce/d1ce00400j
2020
53. Crystalline Polymers
Shotaro Hayashi*
Highly Crystalline and Efficient Red-emissive π-Conjugated Polymer Film: Tuning of Macrostructure for Light-emitting Properties
Materials Advances, Vol. 1, pp. 632-638, 2020.
ma/d0ma00218f
Selected as Back Cover of Materials Advances
Highlighted in News and Topics @KUT
52. Elastic Organic Crystals
Shotaro Hayashi*, Fumitaka Ishiwari, Takanori Fukushima, Motomichi Tashiro, Yutaka Imamura, Michio Katouda
Anisotropic Poisson’s Effect and Deformation-induced Fluorescence Change of Elastic 9,10-Dibromoanthrathene Single Crystals
Angewandte Chemie International Edition, Vol. 59, pp. 16195-16201, 2020.
10.1002/anie.202006474
51. Polycondensation
Kaoru Uegaki, Kazuhiro Nakabayashi, Shin-ichi Yamamoto, Toshio Koizumi, Shotaro Hayashi*
Donor–acceptor Random Regioregular π-Conjugated Copolymers based on Poly(3-hexylthiophene) with Unsymmetrical Monothienoisoindigo Units
RSC Advances, Vol. 10, pp. 19034-19040, 2020.
d0ra03557b
50. New Molecules
Toshiki Fujii, Susumu Tanaka, Shotaro Hayashi*, Hiroaki Imoto*, Kensuke Naka*
Dipyridinoarsole: A New Class of Stable and Modifiable Heteroatom-bridged Bipyridines
Chemical Communications, Vol. 56, pp. 6035-6038, 2020.
10.1039/D0CC02389B
Selected as Inside Front Cover of Chemical Communications
Highlighted in News and Topics @KUT
2019
49. Crystal Engineering
Shotaro Hayashi*, Toshio Koizumi
Direction-specific Fluorescence of an Engineered Organic Crystal and Its Mechanically Induced Shaping-caused New Face Appearance
CrystEngComm, Vol. 21, pp. 5990-5994, 2019.
c9ce01002e
Selected as Back Cover of CrystEngComm
48. Network Polymer Sensors
Shotaro Hayashi*, Shin-ichi Yamamoto, Koji Nishi, Atsushi Asano, Toshio Koizumi
Synthesis of Network Polymer Emitters: Tunable Detection of Chemicals by the Geometric Design
Polymer Journal, Vol. 51, pp. 1055-1061, 2019.
s41428-019-0216-1
47. Polymer Synthesis
Toshio Koizumi*, Tsuyoshi Kameda, Hironori Saito, Ayumu Sato, Shotaro Hayashi
Facile Synthesis of ortho-Phenylene-based Conjugated Polymers through Transformation of Cross-conjugated Poly(2,3-diaryl[2]dendralene)s and their Optical Properties
Journal of Polymer Science, Part A: Polymer Chemistry, Vol.57, pp.827-832, 2019.
10.1002/pola.29333
46. Organic Synthesis
Shotaro Hayashi*, Minami Sakamoto, Fumitaka Ishiwari, Takanori Fukushima, Shin-ichi Yamamoto, Toshio Koizumi
A Versatile Scaffold for Facile Synthesis of Fluorescent Cyano-substituted Stilbenes
Tetrahedron, Vol.75, pp.1079-1084, 2019.
45. Fluorescent Materials
Shotaro Hayashi*, Toshio Koizumi, Natsumi Kamiya
2,5-Dimethoxybenzene-1,4-dicarboxaldehyde: An Emissive Organic Crystal and Highly Efficient Fluorescent Waveguide
ChemPlusChem, Vol. 84, pp.247-251, 2019.
10.1002/cplu.201800597
Selected as Cover Feature of ChemPlusChem
2018
44. Flexible Organic Crystals
Shotaro Hayashi*, Shun-ya Yamamoto, Daisuke Takeuchi, Yutaka Ie, Koji Takagi*
Creating Elastic Organic Crystals of π‐Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide
Angewandte Chemie International Edition, Vol. 57, pp.17002-17008, 2018.
10.1002/anie.201810422
Selected as Infront Cover of Angewandte Chemie International Edition
Highlighted in π造形科学ニュース Vol. 52 （現代化学）
43. Polycondensation
Shotaro Hayashi*, Shin-ichi Yamamoto, Toshio Koizumi
Study on Direct Arylation of Bithiophene with Dibromoxanthene: Detection of Polymer, Oligomeric and Cyclic Byproducts and Easy Separation of the Polymer
Materials Today Communications, Vol.17, pp.259-265, 2018.
42. Electropolymerization
Hiroaki Imoto, Chieko Yamazawa, Shotaro Hayashi*, Masami Aono, Kensuke Naka*
Electropolymerization of Dithieno[3,2-b:2',3'-d]arsole
ChemElectroChem, Vol.5, pp.3357-3360, 2018.
Selected as Cover Feature of ChemElectroChem
41. Supramolecules
Shotaro Hayashi*, Atsushi Takigami, Toshio Koizumi
Solvent Control over Supramolecular Gel Formation and Fluorescence for a Highly Crystalline π-Conjugated Polymer
Chemistry - An Asian Journal, Vol.13, pp.2014-2018, 2018.
Selected as Cover Feature of Chemistry - An Asian Journal
40. Organic Synthesis
Shotaro Hayashi*, Ryosuke Hirai, Shin-ichi Yamamoto, Toshio Koizumi
A Simple Route to Unsymmetric Cyano-substituted Oligo(p-phenylene-vinylene)s
Chemistry Letters, Vol.47, pp.1003-1005, 2018.
39. Flexible Organic Crystals
Shotaro Hayashi*, Toshio Koizumi
Mechanically Induced Shaping of Organic Single Crystals: Facile Fabrication of Fluorescent and Elastic Crystal Fibers
Chemistry - A European Journal, Vol.24, pp.8507-8512, 2018.
Selected as Infront Species of Chemistry - A European Journal
2017
38. Flexible Organic Crystals
Shotaro Hayashi*, Toshio Koizumi, Katsumi Kamiya
Elastic Bending Flexibility of Fluorescent Organic Single Crystal: New Aspects of Commonly Used Building Block “4,7-Dibromo-2,1,3-benzothiadiazole”
Crystal Growth & Design, Vol.17, pp.6158-6162, 2017.
10.1021/acs.cgd.7b00992
新聞報道：日刊工業新聞 平成29年12月28日
曲がる結晶材、防衛大が開発 力かけると変色」
Web News：Yahoo! Japan News 平成29年12月31日
「防衛大、曲がる結晶材を開発 力かけると「転移」で屈曲」
Web News：Goo News 平成29年12月31日
「力かけると変色、曲がる結晶材とは？」
37. Network Polymer Sensors
Shotaro Hayashi*, Yuki Togawa, Shin-ichi Yamamoto, Toshio Koizumi*, Koji Nishi, Atsushi Asano
Synthesis of π-Conjugated Network Polymers Based on Fluoroarene and Fluorescent Units via Direct Arylation Polycondensation and Their Porosity and Fluorescent Properties
Journal of Polymer Science, Part A: Polymer Chemistry, Vol.55, pp.3862-3867, 2017.
36. Flexible Organic Crystals
Shotaro Hayashi*, Atsushi Asano, Natsumi Kamiya, Yoshinobu Yokomori, Takuto Maeda, Toshio Koizumi
Fluorescent Organic Single Crystals with Elastic Bending Flexibility: 1,4-Bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene Derivatives
Scientific Reports, Vol.7, p.9453, 2017.
10.1038/s41598-017-09848-0.
35. Organic Synthesis
Shotaro Hayashi, Masayuki Kasuya, Junichi Machida, Toshio Koizumi*
From Propargylic Biscarbonate to Diaryl[n]dendralenes
Tetrahedron Letters, Vol. 58, pp. 2429-2432, 2017.
34. Polymer Electronics
Shotaro Hayashi*, Shin-ichi Yamamoto, Toshio Koizumi
Effects of Molecular Weight on the Optical and Electrochemical Properties of EDOT-based π-Conjugated Polymers
Scientific Reports, Vol. 7, p. 1027, 2017.
33. Polycondensation
Yoshihisa Kojima, Shotaro Hayashi*, Toshio Koizumi*
Palladium on Carbon (Pd/C)-Catalyzed Direct C-H Arylation Polycondensation of 3,4-Ethylenedioxythiophene with Various Dibromoarenes
Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 55, pp. 1183-1188, 2017.
32. Polycondensation
Shotaro Hayashi*, Yoshihisa Kojima, Toshio Koizumi*
Direct Arylation Polycondensation of β-Unprotected Chalcogen Heteroles under Phosphine-free Conditions
Polymer, Vol. 113, pp. 214-220, 2017.
31. Organic Synthesis
Shotaro Hayashi*, Shin-ichi Yamamoto, Toshio Koizumi
A Cyclic Compound based on Xanthene-linked π-Dimer via Direct Arylation
Chemistry Letters, Vol. 46, pp. 200-203, 2017.
2016
30. Polycondensation
Shotaro Hayashi*, Yuki Togawa, Yoshihisa Kojima, Toshio Koizumi*
Direct Arylation of Fluoroarenes toward Linear, Bent-shaped and Branched π-Conjugated Polymers: Polycondensation and Post-polymerization Approaches
Polymer Chemistry, Vol. 7, pp. 5671-5686, 2016.
Selected as 物質・デバイス共同研究拠点顕著業績 平成28年8月
29. Polycondensation
Shotaro Hayashi*, Atsushi Takigami, Toshio Koizumi
Palladium-immobilized on Thiol-modified Silica Gel for an Effective Direct C-H Arylation
ChemPlusChem, Vol. 81, pp. 930-934, 2016.
28. Polycondensation
Shotaro Hayashi*, Toshio Koizumi
Synthesis of Small Band Gap Poly[Bis-EDOT-Isoindigo] via Direct Arylation and Oxidative Electropolymerization, and Its Optoelectronic Properties
Electrochemistry, Vol. 84, pp. 570-573, 2016.
10.5796/electrochemistry.84.570
27. Flexible Organic Crystals
Shotaro Hayashi*, Toshio Koizumi
Elastic Organic Crystal of a Fluorescent π-Conjugated Molecule
Angewandte Chemie International Edition, Vol. 55, pp. 2701-2704, 2016.
Highlighted in atras of Science, 12 April 2016
新聞報道：日刊工業新聞 平成28年5月23日
「防衛大、柔らかさ高分子樹脂並みの半導体材料向け有機単結晶を開発」
テレビ出演：未来の起源（TBS）平成28年12月18日
Highlighted in 高分子“Hot Topics”平成29年4月号
Highlighted in π造形科学ニュース Vol. 39 （現代化学）
26. Polycondensation
Shotaro Hayashi*, Yuki Togawa, Jun Ashida, Koji Nishi, Atsushi Asano, Toshio Koizumi*
Synthesis of π-Conjugated Porous Polymers via Direct Arylation of Fluoroarenes with Three-arm Triazine
Polymer, Vol. 90, pp. 187-192, 2016.
2015
25. Polycondensation
Shotaro Hayashi*, Toshio Koizumi
Chloride-promoted Pd-Catalyzed Direct C-H Arylation for Highly Efficient Phosphine-free Synthesis of π-Conjugated Polymers
Polymer Chemistry, Vol. 6, pp 5036-5039, 2015.
24. Polycondensation
Shotaro Hayashi*, Yoshihisa Kojima, Toshio Koizumi*
Highly Regioselective Pd/C-Catalyzed Direct Arylation toward Thiophene-based π-Conjugated Polymers
Polymer Chemistry, Vol. 6. pp 881-885, 2015.
Selected as Back Cover of Polymer Chemistry Issue 6
Highlighted in Polymer Chemistry Blog “Paper of the week”
2014
23. Polymer Materials
Shotaro Hayashi*, Toshio Koizumi
Solubility Switching of Fluorescent Polymer Films via Lewis Acid-Base Vapor Treatments
Journal of Polymer Science Part A; Polymer Chemistry, Vol. 52. pp 3142-3145, 2014.
22. Polymer Synthesis
Shinsuke Inagi*, Noriyuki Kaihatsu, Shotaro Hayashi, Toshio Fuchigami
Facile Synthesis of a Variety of Triarylamine-based Conjugated Polymers and Tuning of Their Optoelectronic Properties
Synthetic Metals, Vol. 187, pp. 81-85, 2014.
10.1016/j.synthmet.2013.10.024
2013
21. Polymer Materials
Shotaro Hayashi*, Atsushi Asano, Toshio Koizumi
Trifluoroborate-Modification of Both Pyridine and N-Alkyldiarylamine-Based π-Conjugated Polymer Films: Tuning the Electronic Communication and the Mean Conjugated Length Based on Two Types of Nitrogen in the Conjugated Main Segments
RSC Advances, Vol. 3, pp. 7375-7380, 2013.
20. Electropolymerization
Shotaro Hayashi*, Toshio Koizumi
From Thiopheneboroles to Boron-containing Conjugated Macromolecules via Electropolymerization
Electrochemistry, Vol. 81, No.5, pp. 340-342, 2013.
10.5796/electrochemistry.81.340
2012
19. Electropolymerization
Shotaro Hayashi*, Toshio Koizumi
Two Synthetic Approaches from Di(thien-2-yl)-2,5-pyridine to a BF3-Modified Polymer Film
Chemistry Letters, Vol. 41, No.9, pp. 979-981, 2012.
10.1246/cl.2012.979
18. Polycondensation
Shotaro Hayashi*, Noriyuki Nishioka, Hironari Nishiyama, Toshio Koizumi
π-Conjugated Alternating Copolymer Based on the 3,5-Dinitro-9-fluorenone for Electron-Acceptor Type Materials
Synthetic Metals, Vol. 162, pp. 1485-1489, 2012.
10.1016/j.synthmet.2012.06.029
17. Polycondensation
Noriyuki Nishioka, Shotaro Hayashi, Toshio Koizumi*
Pd(0)-Catalyzed Synthesis of Cross-Conjugated Polymers and Their Transformation to Linear-Conjugated Polymers by Diels-Alder Reaction
Angewandte Chemie International Edition, Vol. 51. pp 3682-3685, 2012.
Highlighted in Organometallic Chemistry News, 10 June 2012
16. Electropolymerization
Shotaro Hayashi*, Toshio Koizumi
From Benzodiazaborole-based Compound to Donor-Acceptor Polymer via Electropolymerization
Polymer Chemistry, Vol. 3, pp. 613-616, 2012.
2011
15. Polymer Materials
Shotaro Hayashi*, Atsushi Asano, Toshio Koizumi
Modification of Pyridine-based Conjugated Polymer Films via Lewis Acid: Halochromism, Characterization, and Macroscopic Gradation Patterning
Polymer Chemistry, Vol. 2, pp. 2764-2766, 2011.
Selected as Front Cover of Polymer Chemistry Issue 12
14. Electroorganic Synthesis
Axel Kirste, Shotaro Hayashi, Gregor Schnakenburg, Itamar M. Malkowsky, Florian Stecker, Andreas Fischer, Toshio Fuchigami, Siegfrid R. Waldvogel*
Highly Selective Electrosynthesis of Biphenoles on Graphite Electrodes in Fluorinated Media
Chemistry: A European Journal, Vol. 17, pp. 14164-14169, 2011.
13. Electrochemical Polymer Reaction
Shotaro Hayashi, Shinsuke Inagi*, Toshio Fuchigami*
Efficient Electrochemical Polymer Halogenation using Thin Layered Cell
Polymer Chemistry, Vol. 2, pp. 1632-1637, 2011.
~2010
12. Electrochemical Polymer Reaction
Shinsuke Inagi*, Kazuya Koseki, Shotaro Hayashi, Toshio Fuchigami*
Electrochemical Tuning of the Optoelectronic Properties of a Fluorene-Based Conjugated Polymer
Langmuir, Vol. 26 (24), pp. 18631-18633, 2010.
10.1021/la104099q
11. Supramolecules
Shotaro Hayashi, Shinsuke Inagi*, Toshio Fuchigami*
Macrostructural Order and Optical Properties of Polyfluorene-Based Polymer Film
Polymer Journal, Vol. 42, pp. 772-775, 2010.
pj201058
10. Electropolymerization
Shinsuke Inagi, Takahiro Yamaguchi, Shotaro Hayashi, Kazuya Koseki, Toshio Fuchigami*
Electropolymerization of 9,9-Difluorofluorene in BF3-OEt2 toward a Photostable n-Type Material
Electrochemistry Communications, Vol. 12 (5), pp. 661-663, 2010.
9. Electrochemical Polymer Reaction
Shinsuke Inagi, Kenta Hosaka, Shotaro Hayashi, Toshio Fuchigami*
Solid-Phase Halogenation of a Conducting Polymer Film via Electrochemical Polymer Reaction
Journal of the Electrochemical Society, Vol. 157 (5), pp. E88-E91, 2010.
8. Electrochemical Polymer Reaction
Shotaro Hayashi, Shinsuke Inagi, Toshio Fuchigami*
Electrochemical Modification of a Fluorene-Carbazole Alternating Copolymer toward a Novel Donor-Acceptor Type Conjugated Polymer
Electrochemistry, Vol. 78 (2), pp. 114-117, 2010.
10.5796/electrochemistry.78.114
7. Electrochemical Polymer Reaction
Shotaro Hayashi, Shinsuke Inagi, Kenta Hosaka, Toshio Fuchigami*
Post-Functionalization of Poly(3-hexylthiophene) via Anodic Chlorination
Synthetic Metals, Vol. 159, pp. 1792-1795, 2009.
10.1016/j.synthmet.2009.05.028
6. Electrochemical Polymer Reaction
Shinsuke Inagi, Shotaro Hayashi, Kenta Hosaka, Toshio Fuchigami*
Facile Functionalization of a Thiophene-Fluorene Alternating Copolymer via Electrochemical Polymer Reaction
Macromolecules, Vol. 42 (12), pp. 3881-3883, 2009.
5. Electrochemical Polymer Reaction
Shotaro Hayashi, Shinsuke Inagi, Toshio Fuchigami*
Synthesis of 9-Substituted Fluorene Copolymers via Chemical and Electrochemical Polymer Reaction and Their Optoelectronic Properties
Macromolecules, Vol. 42 (12), pp. 3755-3760, 2009.
Highlighted in Synfacts 2009, 11, 1214.
4. Electrochemical Polymer Reaction
Shinsuke Inagi, Shotaro Hayashi, Toshio Fuchigami*
Electrochemical Polymer Reaction: Selective Fluorination of Poly(fluorene) Derivative
Chemical Communications, No. 13, pp. 1718-1720, 2009.
3. Polymer Synthesis
Kaoru Adachi, Satoshi Honda, Shotaro Hayashi, Yasuyuki Tezuka*
ATRP-RCM Synthesis of Cyclic Diblock Copolymers
Macromolecules, Vol. 41 (21), pp. 7898-7903, 2008.
2. Polymer Synthesis
Shotaro Hayashi, Kaoru Adachi, Yasuyuki Tezuka*
ATRP-RCM Synthesis of 8-Shaped Poly(methyl acrylate) via 4-Armed Star Telechelics
Polymer Journal, Vol. 40 (6), pp. 572-576, 2008.
pj200892
1. Polymer Synthesis
Shotaro Hayashi, Kaoru Adachi, Yasuyuki Tezuka*
An Efficient Route to Cyclic Polymers by ATRP–RCM Process
Chemistry Letters, Vol. 36 (8), pp. 982-983, 2007.