Faculty Members

Professor
HAYASHI Shotaro

Doctor of Engineering, Tokyo Institute of Technology, Japan, 2010

Year of birth: 1982
Gender: Male
Affiliation:

- School of Engineering Science
- School of Environmental Science and Engineering
- Chemistry, Department of Engineering, Graduate School of Enginering
- Research Center for Molecular Design, Research Institute
researchmap： https://researchmap.jp/shayashi_nda
Article from the "Cutting-edge Research and Social Contribution"：
https://www.kochi-tech.ac.jp/english/power/research/pursuing-super-energy-saving-photonics-employing-highly-diverse-organic-materials.html

Areas of specialization	Crystal Engineering, Polymer Science, Organic Synthesis, Organic Materials Chemistry
Laboratory/research office	Functional Polymer Chemistry In our laboratory, we aim to investigate “unique polymer materials” and “organic materials with higher performance than conventional polymers”. We create synthetic methods and supramolecular self-assembly approaches for polymer aggregates and crystal materials. In particular, we focus on the π- electron skeleton in organic molecules and contribute to next-generation optoelectronics and/or develop new ones.
Current research topics
Educational background	2008: Master, Tokyo Institute of Technology
Professional background	2022-: JST FOREST Researcher
Licenses
Academic societies

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Courses

* Courses provided in English are shown with (E) mark

Undergraduate school	Chemical Exercise Chemical Experiments Functional Materials Chemistry Polymer Science Graduation Thesis Organic Chemistry 1 Outline of Engineering
Graduate school	Seminar 1 Seminar 2 Seminar 3 Seminar 4 Advanced polymer chemistry Individual Work for Graduate Advanced Seminar 1 Advanced Seminar 2

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Research activities

Research papers	Authors: Shun-Fa Wang, Kuan-Chih Tseng, Mahiro Nakabayashi, HAYASHI Shotaro, Fumitaka Ishiwari, Teruki Sugiyama Title: Nanoscale Control of Aggregation-Induced Emission and Second Harmonic Generation in a Dicyano Distyrylbenzene-Appended Polymer Using Optical Trapping Journal: The Journal of Physical Chemistry B, ACS Year: 2025 Authors: Tomohiro Seki, Takumi Okada, Masahiro Ikeda, Kaisei Yamamoto, HAYASHI Shotaro, Yuko Kishida, Hidehiro Uekusa Title: Light-off Salient Effect: Thermal Phase Transitions of Molecular Crystals Controlled by Photoirradiation Journal: Journal of the American Chemical Society, ACS Year: 2025 Authors: Hinako Kato, Yoji Horii, Chiharu Watanabe, Toshiyuki Sasaki, Kouhei Ichiyanagi, Mariko Noguchi, Hiroki Fujimori, Taro Yamamoto, Hal Suzuki, Yuichi Hirai, Keigo Yano, HAYASHI Shotaro, Takashi Kajiwara Title: Molecular Thermal Engine based on a Highly Flexible Elastic Crystal Journal: Journal of the American Chemical Society, ACS Year: 2025 Authors: Mahiro Nakabayashi, MATSUO Takumi, HAYASHI Shotaro Title: Pyridyl/Phenyl-Appended Acrylonitrile π-Conjugated Molecules: Thermally Stable Organic Crystals for Amplified Spontaneous Emission Journal: Chemistry - A European Journal, Wiley Year: 2025 Authors: MATSUO Takumi, HAYASHI Shotaro Title: Polymorphism-Induced Multi-Functional Crystal Photonics Achieved by a Highly Luminescent Benzofuranyl Molecule having Tetrafluorophenylene Core Journal: Journal of Materials Chemistry C, RSC Year: 2025 Authors: Keigo Yano, MATSUO Takumi, HAYASHI Shotaro Title: 2D Elastic Fluorinated Donor–Accepter Type π-Conjugated Molecular Crystals and Its Optical Crystal-Polymer Hybrid Film Journal: Journal of Materials Chemistry C, RSC Year: 2025 Authors: Yuxuan Zhao, Norihisa Hoshino, Keigo Yano, HAYASHI Shotaro, Tomoyuki Akutagawa Title: Elastic Properties of Dichloro- and Dibromo-anthracene Crystals Journal: Crystal Growth & Design, ACS Year: 2025 Authors: Armando Navarro-Huerta, MATSUO Takumi, Alexander S. Mikherdov, Jan Blahut, Erika Bartůňková, Pingyu Jiang, Martin Dračínský, Simon Teat, Mingoo Jin, HAYASHI Shotaro, Braulio Rodríguez-Molina Title: Optical Waveguiding Charge-Transfer Cocrystals: Examining the Impact of Molecular Rotations on Their Photoluminescence Journal: Journal of the American Chemical Society, ACS Year: 2025 Authors: MATSUO Takumi, Soichiro Azuma, Mahiro Nakabayashi, Fumio Sasaki, HAYASHI Shotaro Title: Cyano-Substituted Distyrylbenzene Derivative for Laser Media: High Solid-State Luminescence and Processabilities by tert-Butyl Appending Design Journal: Advanced Optical Materials, Wiley Year: 2025 Authors: Saki Tanaka, MATSUO Takumi, HAYASHI Shotaro Title: Crystal Structures of Highly Electron-Accepting Naphtho[1,2-c:5,6-c]bis[1,2,5]chalcogendiazole Journal: Crystal Research and Technology, Wiley Year: 2024 Authors: Koki Ikeda, MATSUO Takumi, Keigo Yano, HAYASHI Shotaro Title: Luminescent Anthracene-based Elastic Mixed Molecular Crystals for Flexible and FRET-Assisted Optical Waveguides Journal: Bulletin of the Chemical Society of Japan Year: 2024 Authors: Shotaro HAYASHI, Keisuke Shimada, MATSUO Takumi Title: Highly and Deep Red-luminescent Bisphenylamine-appended Benzocarcogendiazole Fluorophores Journal: ChemPhysChem, Wiley Year: 2024 Authors: Tomohiro Seki, Shiori Kobayashi, Rintaro Ishikawa, Keigo Yano, MATSUO Takumi, HAYASHI Shotaro Title: Preparation of Intrinsically Fragile Bent Crystals Journal: Chemical Science, RSC Year: 2024 Authors: MATSUO Takumi, Hiroki Tanikubo, HAYASHI Shotaro Title: Facile Wet-Process to Free-Standing Whispering Gallery Mode Resonators Mixed with Spherical Silica Gel and π-Conjugated Molecules Journal: Advanced Optical Materials, Wiley Year: 2024 Authors: Shunya Inayama, HAYASHI Shotaro Title: Iterative Click-Addition Process for Urethane-based 1st-5th Dendrons Journal: ACS Applied Polymer Materials, ACS Year: 2024 Authors: MATSUO Takumi, HAYASHI Shotaro Title: Lasing in Low-Dimensional Crystals of a Fumaronitrile-Based Luminogen Journal: The Journal of Physical Chemistry Letters, Vol. 15, No. 14, pp. 3968-3974, American Chamical Society Year: 2024 Authors: Hiroki Tanikubo, MATSUO Takumi, HAYASHI Shotaro Title: Light-induced E-Z Isomerization of Anthracene-appended p-Methoxyphenyl Acrylonitrile giving Fluorescent Crystals Journal: Journal of Crystal Growth, Elsevior Year: 2024 Authors: Yuto Hino, HAYASHI Shotaro Title: Thiophenoanthracene-based Conjugated Polymers via Direct Arylation Polycondensation Journal: Journal of Polymer Science, Wiley Year: 2024 Authors: Satoshi Watanabe, Keigo Ono, Rinsuke Nakayama, Kaho Tajiri, Shun Inouchi, John Texter, Masashi Kunitake, HAYASHI Shotaro Title: Phase Diagrams of Anthracene Derivatives in Pyridinium Ion Liquids Journal: ChemPhysChem, Wiley Year: 2024 Authors: Masakazu Nakamura, Hirotaka Kojima, Ryo Abe, Yongyoon Cho, HAYASHI Shotaro, Masahiro Hiramoto Title: Giant Seebeck Effect over 0.1 V/K – Is this an Intrinsic Phenomenon in Organic Semiconductors? – Journal: Faraday Discussion Year: 2023 Authors: Haruka Yamauchi, Shunya Inayama, Mahiro Nakabayashi, HAYASHI Shotaro Title: Systematic Order-made Synthesis of Sequence-defined Polyurethanes with Length, Types, and Topologies Journal: ACS Macro Letters, American Chemical Society Year: 2023 Authors: Yasutaka Suzuki, Satoshi Koga, Kana Kitaura, Jun Kawamata, Keigo Yano, Norihisa Hoshino, Tomoyuki Akutagawa, HAYASHI Shotaro Title: Noninvasive Three-dimensional Assessment of Single Molecular Crystals using Multiphoton Microscopic Observation and Their Deformation-induced Emission Characteristics Journal: Langmuir, ACS Year: 2023 Authors: Mahiro Nakabayashi, MATSUO Takumi, HAYASHI Shotaro Title: Non-covalent Supramolecular 1D Alternating Copolymer in Crystal toward 2D Anisotropic Photon Transport Journal: Chemistry-A European Journal, Wiley Year: 2023 Authors: MATSUO Takumi, Junpei Kuwabara, Takaki Kanbara, HAYASHI Shotaro Title: Flexible and Red-Emissive Organic Single Crystal Micro-Resonator for Efficient Active Waveguides Journal: The Journal of Physical Chemistry Letters Year: 2023 Authors: MATSUO Takumi, Koki Ikeda, HAYASHI Shotaro Title: Flexible Förster Resonance Energy Transfer-assisted Optical Waveguide based on Elastic Mixed Molecular Crystals Journal: Aggregate Year: 2023 Authors: Yamato Yoshino, Mahiro Nakabayashi, HAYASHI Shotaro Title: BF3-Assisted Insolubilization Switching toward Bilayer π-Conjugated Polymer Film Journal: Reactive and Functional Polymers, Vol. 186, p. 105554 Year: 2023 Authors: Yusuke Makino, Masaki Yoshida, HAYASHI Shotaro, Toshiyuki Sasaki, Satoshi Takamizawa, Atsushi Kobayashi, Masako Kato Title: Elastic and Bright Assembly-induced Luminescent Crystal of Platinum(II) Complexes with Near-unity Emission Quantum Yield Journal: Dalton Transactions, RSC Year: 2023 Authors: MATSUO Takumi, HAYASHI Shotaro, Fumio Sasaki, Hisao Yanagi Title: Efficient Optical Waveguiding and Lasing in Needle Crystals of Thiophene/phenylene Co-oligomers Grown in Solution Phase Journal: Japanese Journal of Applied Physics, Vol. 62, p. 030903 Year: 2023 Authors: Hiroki Tanikubo, MATSUO Takumi, HAYASHI Shotaro Title: Alkyl-chain Bridged Acrylonitrile-appended Anthracene Chromophore toward Mechanically-induced Bathochromic Shift Journal: Bulletin of the Chemical Society of Japan, CSJ Year: 2023 Authors: Yuto Hino, MATSUO Takumi, HAYASHI Shotaro Title: Unique 2D Face Topologies in Naphthyl-appended Naphtho[k]fluoranthene-based 3D Crystals for Optical Waveguide Journal: Advanced Optical Materials, Wiley Year: 2022 Authors: Shuai Zhao, Hiroshi Yamagishi, Yasuo Norikane, HAYASHI Shotaro, Yohei Yamamoto Title: Optical Control of Aggregation Induced Emission Shift by Photoisomerizable Precipitant in a Liquid Droplet Microresonator Journal: Advanced Optical Materials, Wiley Year: 2022 Authors: Yuto Hino, HAYASHI Shotaro Title: Mesityl-appended 1,4-bis(β-acrylonitrile)-2,5-dimethoxybenzene: blue and green fluorescent crystals from a soluble donor–acceptor molecular system Journal: ChemistrySelect, Wiley Year: 2022 Authors: Mahiro Nakabayashi, NISHIWAKI Nagatoshi, Akitaka Ito, HAYASHI Shotaro, IWAI Kento Title: Efficient Synthetic Method for α-Nitro-β-Dialdimine Ligands Bearing Electron-Deficient Aryl Groups Journal: Tetrahedron Letters, Vol. 102, pp. 153948-4 pages Year: 2022 Authors: Haruka Yamauchi, Atsushi Asano, HAYASHI Shotaro Title: Synthesis of Covalent Boroxine Frameworks by Polycondensation of Tetrahydroxydiboron Journal: HETEROCYCLES, Vol. 104, pp. 979-986 Year: 2022 Authors: HAYASHI Shotaro Title: Elastic Molecular Crystals: Their Deformation-induced Reversible Unit Cell Changes with Specific Poisson Effect Journal: Bulletin of the Chemical Society of Japan, Vol. 95, pp. 721-727 Year: 2022 Authors: Haruka Yamauchi, Mahiro Nakabayashi, Maiko Kawada, Yuuto Hino, Syunya Inayama, Hiroki Tanikubo, HAYASHI Shotaro Title: Synthesis of Acrylonitrile Side Chain-appended π-Conjugated Polymers by a Suzuki Cross-coupling Polycondensation and a Knoevenagel Condensation, and Their Optical Properties Journal: Materials Advances, Vol. 3, pp. 3835-3841, RSC Year: 2022 Authors: Shuai Zhao, Hiroshi Yamagishi, Osamu Oki, Yuta Ihara, Naoki Ichiji, Atsushi Kubo, HAYASHI Shotaro, Yohei Yamamoto Title: Mechanically Flexible and Optically Tunable Organic Crystal Resonator Journal: Advanced Optical Materials, Wiley Year: 2021 Authors: Yuto Hino, HAYASHI Shotaro Title: Thermo-triggered Domino-like Single-Crystal-to-Single-Crystal Phase Transition from Face-to-edge to Face-to-face Packing of Anthracene Journal: Chemistry-A European Journal, Wiley Year: 2021 Authors: QIAGEDEER Airong, YAMAGISHI Hiroshi, HAYASHI Shotaro, YAMAMOTO Yohei Title: Polymer Optical Microcavity Sensor for Volatile Organic Compounds with Distinct Selectivity toward Aromatic Hydrocarbons Journal: ACS Omega, Vol. 6, pp. 21066-21070, ACS Year: 2021 Authors: HAYASHI Shotaro Title: Cyano-substituted Oligo(p-phenylene-vinylene)s having Linear and Branched Octyloxy Groups: Control of Aggregation and Emitting Properties via C8 Alkyl Chain Difference Journal: Molecular Systems Design & Engineering, Vol. 6, pp. 503-507, RSC Year: 2021 Authors: HAYASHI Shotaro Title: Curving Deformation-induced Photoluminescence Changes and Anisotropy Analysis in Elastic Organic Crystals Journal: CrystEngComm, Vol. 23, pp. 5763-5767, RSC Year: 2021 Authors: HAYASHI Shotaro Title: Highly Crystalline and Efficient Red-emissive π-Conjugated Polymer Film: Tuning of Macrostructure for Light-emitting Properties Journal: Materials Advances, Vol. 1, pp. 632-638, RSC Year: 2020 Authors: HAYASHI Shotaro, ISHIWARI Fumitaka, FUKUSHIMA Takanori, TASHIRO Motomichi, SHOUHEI Mikage, IMAMURA Yutaka, KATOUDA Michio Title: Anisotropic Poisson’s Effect and Deformation-induced Fluorescence Change of Elastic 9,10-Dibromoanthrathene Single Crystals Journal: Angewandte Chemie International Edition, Vol. 59, pp. 16195-16201, Wiley Year: 2020 Authors: UEGAKI Kaoru, NAKABAYASHI Kazuhiro, YAMAMOTO Shin-ichi, KOIZUMI Toshio, HAYASHI Shotaro Title: Donor–acceptor Random Regioregular π-Conjugated Copolymers based on Poly(3-hexylthiophene) with Unsymmetrical Monothienoisoindigo Units Journal: RSC Advances, Vol. 10, pp. 19034-19040, RSC Year: 2020 Authors: FUJII Toshiki, TANAKA Susumu, HAYASHI Shotaro, IMOTO Hiroaki, NAKA Kensuke Title: Dipyridinoarsole: A New Class of Stable and Modifiable Heteroatom-bridged Bipyridines Journal: Chemical Communications, Vol. 56, pp. 6035-6038, RSC Year: 2020 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Direction-specific Fluorescence of an Engineered Organic Crystal and Its Mechanically Induced Shaping-caused New Face Appearance Journal: CrystEngComm, Vol. 21, pp. 5990-5994, RSC Year: 2019 Authors: HAYASHI Shotaro, YAMAMOTO Shin-ichi, NISHI Koji, ASANO Atsushi, KOIZUMI Toshio Title: Synthesis of Network Polymer Emitters: Tunable Detection of Chemicals by the Geometric Design Journal: Polymer Journal, Vol. 51, pp. 1055-1061, NPG Year: 2019 Authors: KOIZUMI Toshio, KAMEDA Tsuyoshi, SAITO Hironori, SATO Ayumu, HAYASHI Shotaro Title: 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: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 57, pp. 827-832, Wiley Year: 2019 Authors: HAYASHI Shotaro, SAKAMOTO Minami, ISHIWARI Fumitaka, FUKUSHIMA Takanori, YAMAMOTO Shin-ichi, KOIZUMI Toshio Title: A Versatile Scaffold for Facile Synthesis of Fluorescent Cyano-substituted Stilbenes Journal: Tetrahedron, Vol. 75, pp. 1079-1084 Year: 2019 Authors: HAYASHI Shotaro, KOIZUMI Toshio, KAMIYA Natumi Title: 2,5-Dimethoxybenzene-1,4-dicarboxaldehyde: An Emissive Organic Crystal and Highly Efficient Fluorescent Waveguide Journal: ChemPlusChem, Vol. 84, pp. 247-251, Wiley Year: 2019 Authors: HAYASHI Shotaro, YAMAMOTO Shin-ya, TAKEUCHI Daisuke, IE Yutaka, TAKAGI Koji Title: Creating Elastic Organic Crystals of π‐Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide Journal: Angewandte Chemie International Edition, Vol. 57, pp. 17002-17008, Wiley Year: 2018 Authors: IMOTO Hiroki, YAMAZAWA Chieko, HAYASHI Shotaro, AONO Masami, NAKA Kensuke Title: Electropolymerization of Dithieno[3,2-b:2',3'-d]arsole Journal: ChemElectroChem, Vol. 5, pp. 3357-3360, Wiley Year: 2018 Authors: HAYASHI Shotaro, YAMAMOTO Shin-ichi, KOIZUMI Toshio Title: Study on Direct Arylation of Bithiophene with Dibromoxanthene: Detection of Polymer, Oligomeric and Cyclic Byproducts and Easy Separation of the Polymer Journal: Materials Today Communications, Vol. 17, pp. 259-265 Year: 2018 Authors: HAYASHI Shotaro, TAKIGAMI Atsushi, KOIZUMI Toshio Title: Solvent Control over Supramolecular Gel Formation and Fluorescence for a Highly Crystalline π-Conjugated Polymer Journal: Chemistry - An Asian Journal, Vol. 13, pp. 2014-2018, Wiley Year: 2018 Authors: HAYASHI Shotaro, HIRAI Ryosuke, YAMAMOTO Shin-ichi, KOIZUMI Toshio Title: A Simple Route to Unsymmetric Cyano-substituted Oligo(p-phenylene-vinylene)s Journal: Chemistry Letters, Vol. 47, pp. 1003-1005, CSJ Year: 2018 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Mechanically Induced Shaping of Organic Single Crystals: Facile Fabrication of Fluorescent and Elastic Crystal Fibers Journal: Chemistry - A European Journal, Vol. 24, pp. 8507-8512, Wiley Year: 2018 Authors: HAYASHI Shotaro, KOIZUMI Toshio, KAMIYA Natsumi Title: Elastic Bending Flexibility of Fluorescent Organic Single Crystal: New Aspects of Commonly Used Building Block “4,7-Dibromo-2,1,3-benzothiadiazole” Journal: Crystal Growth & Design, Vol. 17, pp. 6158-6162, ACS Year: 2017 Authors: HAYASHI Shotaro, YAMAMOTO Shin-ichi, KOIZUMI Toshio Title: A Cyclic Compound based on Xanthene-linked π-Dimer via Direct Arylation Journal: Chemistry Letters, Vol. 46, pp. 200-203, CSJ Year: 2017 Authors: HAYASHI Shotaro, TOGAWA Yuki, YAMAMOTO Shin-ichi, KOIZUMI Toshio, ASANO Atsushi Title: Synthesis of π-Conjugated Network Polymers Based on Fluoroarene and Fluorescent Units via Direct Arylation Polycondensation and Their Porosity and Fluorescent Properties Journal: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 55, pp. 3862-3867, Wiley Year: 2017 Authors: HAYASHI Shotaro, ASANO Atsushi, KAMIYA Natsumi, YOKOMORI Yoshinobu, MAEDA Takuto, KOIZUMI Toshio Title: Fluorescent Organic Single Crystals with Elastic Bending Flexibility: 1,4-Bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene Derivatives Journal: Scientific Reports, Vol. 7, p. 9453 Year: 2017 Authors: HAYASHI Shotaro, KASUYA Masayuki, MACHIDA Junichi, KOIZUMI Toshio Title: From Propargylic Biscarbonate to Diaryl[n]dendralenes Journal: Tetrahedron Letters, Vol. 8, pp. 2429-2432 Year: 2017 Authors: HAYASHI Shotaro, YAMAMOTO Shin-ichi, KOIZUMI Toshio Title: Effects of Molecular Weight on the Optical and Electrochemical Properties of EDOT-based π-Conjugated Polymers Journal: Scientific Reports, Vol. 7, p. 1078, NPG Year: 2017 Authors: HAYASHI Shotaro, KOJIMA Yoshihisa, KOIZUMI Toshio Title: Direct Arylation Polycondensation of β-Unprotected Chalcogen Heteroles under Phosphine-free Conditions Journal: Polymer, Vol. 113, pp. 214-220 Year: 2017 Authors: KOJIMA Yoshihisa, HAYASHI Shotaro, KOIZUMI Toshio Title: Palladium on Carbon (Pd/C)-Catalyzed Direct C-H Arylation Polycondensation of 3,4-Ethylenedioxythiophene with Various Dibromoarenes Journal: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 55, pp. 1183-1188, Wiley Year: 2017 Authors: HAYASHI Shotaro, TOGAWA Yuki, KOJIMA Yoshihisa, KOIZUMI Toshio Title: Direct Arylation of Fluoroarenes toward Linear, Bent-shaped and Branched π-Conjugated Polymers: Polycondensation and Post-polymerization Approaches Journal: Polymer Chemistry, Vol. 7, pp. 5671-5686, RSC Year: 2016 Authors: HAYASHI Shotaro, TAKIGAMI Atsushi, KOIZUMI Toshio Title: Palladium-immobilized on Thiol-modified Silica Gel for an Effective Direct C-H Arylation Journal: ChemPlusChem, Vol. 81, pp. 930-934, Wiley Year: 2016 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Synthesis of Small Band Gap Poly[Bis-EDOT-Isoindigo] via Direct Arylation and Oxidative Electropolymerization, and Its Optoelectronic Properties Journal: Electrochemistry, Vol. 84, pp. 570-573 Year: 2016 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Elastic Organic Crystal of a Fluorescent π-Conjugated Molecule Journal: Angewandte Chemie International Edition, Vol. 55, pp. 2701-2704, Wiley Year: 2016 Authors: HAYASHI Shotaro, TOGAWA Yuki, ASHIDA Jun, NISHI Koji, ASANO Atsushi, KOIZUMI Toshio Title: Synthesis of π-Conjugated Porous Polymers via Direct Arylation of Fluoroarenes with Three-arm Triazine Journal: Polymer, Vol. 90, pp. 187-192 Year: 2016 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Chloride-promoted Pd-Catalyzed Direct C-H Arylation for Highly Efficient Phosphine-free Synthesis of π-Conjugated Polymers Journal: Polymer Chemistry, Vol. 6, pp. 536-539, RSC Year: 2015 Authors: HAYASHI Shotaro, KOJIMA Yoshihisa, KOIZUMI Toshio Title: Highly Regioselective Pd/C-Catalyzed Direct Arylation toward Thiophene-based π-Conjugated Polymers Journal: Polymer Chemistry, Vol. 6, pp. 881-885, RSC Year: 2015 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Solubility Switching of Fluorescent Polymer Films via Lewis Acid-Base Vapor Treatments Journal: Journal of Polymer Science Part A; Polymer Chemistry, Vol. 52, pp. 3142-3145, Wiley Year: 2014 Authors: INAGI Shinsuke, KAIHATSU Noriyukki, HAYASHI Shotaro, FUCHIGAMI Toshio Title: Facile Synthesis of a Variety of Triarylamine-based Conjugated Polymers and Tuning of Their Optoelectronic Properties Journal: Synthetic Metals, Vol. 187, pp. 81-85 Year: 2014 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: From Thiopheneboroles to Boron-containing Conjugated Macromolecules via Electropolymerization Journal: Electrochemistry, Vol. 81, pp. 340-342, 電気化学会 Year: 2013 Authors: HAYASHI Shotaro, ASANO Atsushi, KOIZUMI Toshio Title: 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 Journal: RSC Advances, Vol. 3, pp. 7375-7380, RSC Year: 2013 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: Two Synthetic Approaches from Di(thien-2-yl)-2,5-pyridine to a BF3-Modified Polymer Film Journal: Chemistry Letters, Vol. 41, pp. 979-981, CSJ Year: 2012 Authors: HAYASHI Shotaro, NISHIOKA Noriyuki, NISHIYAMA Hironari, KOIZUMI Toshio Title: π-Conjugated Alternating Copolymer Based on the 3,5-Dinitro-9-fluorenone for Electron-Acceptor Type Materials Journal: Synthetic Metals, Vol. 162, pp. 1485-1489 Year: 2012 Authors: NISHIOKA Noriyuki, HAYASHI Shotaro, KOIZUMI Toshio Title: Pd(0)-Catalyzed Synthesis of Cross-Conjugated Polymers and Their Transformation to Linear-Conjugated Polymers by Diels-Alder Reaction Journal: Angewandte Chemie International Edition, Vol. 51, pp. 3682-3685, Wiley Year: 2012 Authors: HAYASHI Shotaro, KOIZUMI Toshio Title: From Benzodiazaborole-based Compound to Donor-Acceptor Polymer via Electropolymerization Journal: Polymer Chemistry, Vol. 3, pp. 613-616, RSC Year: 2012 Authors: Axel Kirste, HAYASHI Shotaro, Gregor Schnakenburg, Itamar M. Malkowsky, Florian Stecker, Andreas Fischer, FUCHIGAMI Toshio, Siegfrid R. Waldvogel Title: Highly Selective Electrosynthesis of Biphenoles on Graphite Electrodes in Fluorinated Media Journal: Chemistry: A European Journal, Vol. 17, pp. 14164-14169, Wiley Year: 2011 Authors: HAYASHI Shotaro, ASANO Atsushi, KOIZUMI Toshio Title: Modification of Pyridine-based Conjugated Polymer Films via Lewis Acid: Halochromism, Characterization and Macroscopic Gradation Patterning Journal: Polymer Chemistry, Vol. 2, pp. 2764-2766, RSC Year: 2011 Authors: HAYASHI Shotaro, INAGI Shinsuke, FUCHIGAMI Toshio Title: Efficient Electrochemical Polymer Halogenation using Thin Layered Cell Journal: Polymer Chemistry, Vol. 2, pp. 1632-1637, RSC Year: 2011 Authors: INAGI Shinsuke, KOSEKI Kazuya, HAYASHI Shotaro, FUCHIGAMI Toshio Title: Electrochemical Tuning of the Optoelectronic Properties of a Fluorene-Based Conjugated Polymer Journal: Langmuir, Vol. 26, pp. 18631-18633, ACS Year: 2010 Authors: HAYASHI Shotaro, INAGI Shinsuke, FUCHIGAMI Toshio Title: Macrostructural Order and Optical Properties of Polyfluorene-Based Polymer Film Journal: Polymer Journal, Vol. 42, pp. 771-775, NPG Year: 2010 Authors: INAGI Shinsuke, HOSAKA Kenta, HAYASHI Shotaro, FUCHIGAMI Toshio Title: Solid-Phase Halogenation of a Conducting Polymer Film via Electrochemical Polymer Reaction Journal: Journal of the Electrochemical Society, Vol. 157, pp. E88-E91, ECS Year: 2010 Authors: INAGI Shinsuke, Yamaguchi Takahiro, HAYASHI Shotaro, KOSEKI Kazuya, FUCHIGAMI Toshio Title: Electropolymerization of 9,9-Difluorofluorene in BF3-OEt2 toward a Photostable n-Type Material Journal: Electrochemistry Communications, Vol. 12, pp. 661-663 Year: 2010 Authors: HAYASHI Shotaro, INAGI Shinsuke, FUCHIGAMI Toshio Title: Electrochemical Modification of a Fluorene-Carbazole Alternating Copolymer toward a Novel Donor-Acceptor Type Conjugated Polymer Journal: Electrochemistry, Vol. 78, pp. 114-117, 電気化学会 Year: 2010 Authors: HAYASHI Shotaro, INAGI Shinsuke, FUCHIGAMI Toshio Title: Post-Functionalization of Poly(3-hexylthiophene) via Anodic Chlorination Journal: Synthetic Metals, Vol. 159, pp. 1792-1795 Year: 2009 Authors: INAGI Shinsuke, HAYASHI Shotaro, HOSAKA Kenta, FUCHIGAMI Toshio Title: Facile Functionalization of a Thiophene-Fluorene Alternating Copolymer via Electrochemical Polymer Reaction Journal: Macromolecules, Vol. 42, pp. 3881-3883, ACS Year: 2009 Authors: HAYASHI Shotaro, INAGI Shinsuke, FUCHIGAMI Toshio Title: Synthesis of 9-Substituted Fluorene Copolymers via Chemical and Electrochemical Polymer Reaction and Their Optoelectronic Properties Journal: Macromolecules, Vol. 42, pp. 3755-3760, ACS Year: 2009 Authors: INAGI Shinsuke, HAYASHI Shotaro, FUCHIGAMI Toshio Title: Electrochemical Polymer Reaction: Selective Fluorination of Poly(fluorene) Derivative Journal: Chemical Communications, Vol. 13, pp. 1718-1720, RSC Year: 2009 Authors: ADACHI Kaoru, HONDA Satoshi, HAYASHI Shotaro, TEZUKA Yasuyuki Title: ATRP-RCM Synthesis of Cyclic Diblock Copolymers Journal: Macromolecules, Vol. 41, pp. 7898-7903, ACS Year: 2008 Authors: HAYASHI Shotaro, ADACHI Kaoru, TEZUKA Yasuyuki Title: ATRP-RCM Synthesis of 8-Shaped Poly(methyl acrylate) via 4-Armed Star Telechelics Journal: Polymer Journal, Vol. 40, pp. 572-576, NPG Year: 2008 Authors: HAYASHI Shotaro, ADACHI Kaoru, TEZUKA Yasuyuki Title: An Efficient Route to Cyclic Polymers by ATRP–RCM Process Journal: Chemistry Letters, Vol. 36, pp. 982-983, CSJ Year: 2007
Invited lectures	Flexible Molecular Crystal Photonics, 2024 Fluorescent Flexible Organic Crystals: Detailed Investigation of Their Deformation and Fluorescence Changes, The 2020 International Chemical Congress of Pacific Basin Societies, Pacifichem, Online, 2021 Elastic Organic Crystal based on Fluorescent Molecule, International Congress on Pure & Applied Chemistry (ICPAC) 2018, Cambodia, 2018
Awards	One of the Most Outstanding Referees for Angewandte Chemie, ACIE, 2023 The 65th Polymer Research Presentation (Kobe) Young Scientist Lecture Award, 2019 CSJ Presentation Award 2019 for Industries, 2019 Award for Encouragement of Research in Polymer Science; the Society of Polymer Science, Japan, 2018 JEMEA best poster award , 2018 Polymer Materials Forum best presentation award; the Society of Polymer Science, Japan, 2017 Yamazaki Award for Encouragement of Research, 2017 Fourth grade award, 2016 Award for Encouragement of Research, 2015 Nippon Shokubai Co., Ltd. Award; Synthetic Organic Chemistry, Japan, 2015 CSJ Presentation Award 2019 for Students, 2010
Grants-in-Aid for Scientific Research from the Japanese government	Project title: Creating Asymmetric Spaces of Elastic Crystals via Reversible Mechanical Deformation Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) Project number: 19H04604 Project period: 2019-2020 Total budget amount: 4,940,000 yen Keywords: Project title: Creating Mechanically Deformable Functional Soft Crystals and Their Analyses Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) Project number: 20H04684 Project period: 2020-2021 Total budget amount: 5,070,000 yen Keywords: Project title: Creatiing Viscoelastic Molecular Crystals and Their Thermoplastic and Hardening Processes Category: Grant-in-Aid for Scientific Research (B) Project number: 24K01574 Project period: 2024-2027 Total budget amount: 18,460,000 yen Keywords: Project title: Synthesis of Perfect Sequence-Defined Ring Polymers Category: Grant-in-Aid for Challenging Research (Exploratory) Project number: 25K22289 Project period: 2025-2027 Total budget amount: 6,500,000 yen Keywords:

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Published books	Advances in Organic Crystal Chemistry Chapter 5: Mechanical Properties in Organic Molecular Crystals Toward Photonic Applications., SPRINGER NATURE, 2025

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