Kochi University of Technology ~ Chemistry ~
高知県公立大学法人 高知工科大学 環境理工学群 化学専攻
Functional Polymer Chemistry
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, 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.
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.
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
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
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
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
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.
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.
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”
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
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
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.
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.
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.