Basic Information

Faculty

• Faculty of Science

Email Address

• Email Address

  hayakawa.masahiro.2nkyoto-u.ac.jp

Professional Memberships

• From 2017, To Present

  日本化学会
• From 2017, To Present

  基礎有機化学会

Academic Degree

• 25 Mar. 2019

  名古屋大学修士（理学）
• 31 May 2022

  名古屋大学博士（理学）

Academic Resume (Graduate Schools)

• 名古屋大学, 大学院理学研究科博士後期課程物質物理学専攻（化学系）, 修了

Academic Resume (Undergraduate School/Majors)

• 名古屋大学, 理学部化学科, 卒業

Research History

• From Oct. 2022, To Present

  Kyoto University, Graduate School of Science Division of Chemistry, Assistant Professor
• From Jun. 2022, To Oct. 2022

  Kyoto University, Graduate School of Science Division of Chemistry, Program-Specific Researcher
• From Apr. 2022, To May 2022

  Kyoto University, Graduate School of Science Division of Chemistry, Research Associate
• From Jul. 2021, To Mar. 2022

  Kyoto University, Institute for Integrated Cell-Material Sciences, Designated Research Associate
• From Apr. 2019, To Mar. 2022

  Nagoya University, Graduate School of Science, Japan Society for the Promotion of Science Research Fellowship for Young Scientists (DC1)

ID,URL

• ORCID ID

  0000-0002-2405-9897

• J-Global ID

  202301002749532611

researchmap URL

• https://researchmap.jp/m.hayakawa

Research

Research Areas

• Nanotechnology/Materials, Structural/physical organic chemistry
• Nanotechnology/Materials, Synthetic organic chemistry

Papers

• Donor-only substituted benzene achieves thermally activated delayed fluorescence

  Masashi Mamada; Sawako Yada; Masahiro Hayakawa; Ryota Uchida; Hiroshi Katagiri; Takuji Hatakeyama; Chihaya Adachi

  Communications Chemistry, 18 Sep. 2024, Peer-reviewed

  
• “Core–Shell” Wave Function Modulation in Organic Narrowband Emitters

  Masahiro Hayakawa; Xun Tang; Yuta Ueda; Hayato Eguchi; Masakazu Kondo; Susumu Oda; Xiao-Chun Fan; Gerardus N. Iswara Lestanto; Chihaya Adachi; Takuji Hatakeyama

  Journal of the American Chemical Society, 10 Jul. 2024, Peer-reviewed, Lead author

  
• π-Extended 9b-Boraphenalenes: Synthesis, Structure, and Physical Properties

  Atsuhiro Ikeno; Masahiro Hayakawa; Mugiho Sakai; Yusuke Tsutsui; Soichiro Nakatsuka; Shu Seki; Takuji Hatakeyama

  Journal of the American Chemical Society, 26 Jun. 2024, Peer-reviewed

  
• Organoboron-based multiple-resonance emitters: synthesis, structure–property correlations, and prospects

  Masashi Mamada; Masahiro Hayakawa; Junki Ochi; Takuji Hatakeyama

  Chemical Society Reviews, 2024, Peer-reviewed

  
• Spiroborate‐Based Host Materials with High Triplet Energies and Ambipolar Charge‐Transport Properties

  Masahiro Hayakawa; Mayu Kameda; Ryosuke Kawasumi; Soichiro Nakatsuka; Nobuhiro Yasuda; Takuji Hatakeyama

  Angewandte Chemie, 27 Mar. 2023, Peer-reviewed, Lead author

  
• One-Shot Construction of BN-Embedded Heptadecacene Framework Exhibiting Ultra-narrowband Green Thermally Activated Delayed Fluorescence

  Yusuke Sano; Toshiki Shintani; Masahiro Hayakawa; Susumu Oda; Masakazu Kondo; Takeshi Matsushita; Takuji Hatakeyama

  Journal of the American Chemical Society, 16 May 2023, Peer-reviewed

  
• Flattened 1D fragments of fullerene C60 that exhibit robustness toward multi-electron reduction

  Masahiro Hayakawa; Naoyuki Sunayama; Shu I. Takagi; Yu Matsuo; Asuka Tamaki; Shigehiro Yamaguchi; Shu Seki; Aiko Fukazawa

  Nature Communications, 15 May 2023, Peer-reviewed, Lead author

  Access this paper :

  
• Stereoselective Synthesis and Characterization of Indenone Azine‐Based Electron‐Accepting π‐Conjugated Systems

  Shu I Takagi; Masahiro Hayakawa; Aiko Fukazawa

  Chemistry – A European Journal, 11 Mar. 2023, Peer-reviewed

  
• Spiroborate‐Based Host Materials with High Triplet Energies and Ambipolar Charge‐Transport Properties

  Masahiro Hayakawa; Mayu Kameda; Ryosuke Kawasumi; Soichiro Nakatsuka; Nobuhiro Yasuda; Takuji Hatakeyama

  Angewandte Chemie International Edition, 15 Feb. 2023, Peer-reviewed, Lead author

  
• Sequential Multiple Borylation Toward an Ultrapure Green Thermally Activated Delayed Fluorescence Material

  Shigetada Uemura; Susumu Oda; Masahiro Hayakawa; Ryosuke Kawasumi; Naoya Ikeda; Yi-Ting Lee; Chin-Yiu Chan; Youichi Tsuchiya; Chihaya Adachi; Takuji Hatakeyama

  Journal of the American Chemical Society, 22 Dec. 2022, Peer-reviewed

  
• One-dimensional fragments of fullerene C60 that exhibit robustness toward multi-electron reduction and pronounced light absorption

  Masahiro Hayakawa; Naoyuki Sunayama; Shu I. Takagi; Asuka Tamaki; Shigehiro Yamaguchi; Aiko Fukazawa

  16 Aug. 2022, Lead author

  
• Late-stage modification of π-electron systems based on asymmetric oxidation of a medium-sized sulfur-containing ring

  Masahiro Hayakawa; Satoshi Horike; Yuh Hijikata; Kosuke Yasui; Shigehiro Yamaguchi; Aiko Fukazawa

  Chemical Communications, Jan. 2022, Peer-reviewed, Lead author

  
• Extended π-Electron Delocalization in Quinoid-Based Conjugated Polymers Boosts Intrachain Charge Carrier Transport

  Tsubasa Mikie; Masahiro Hayakawa; Kenta Okamoto; Keitaro Iguchi; Shuhei Yashiro; Tomoyuki Koganezawa; Masatomo Sumiya; Hiroyuki Ishii; Shigehiro Yamaguchi; Aiko Fukazawa; Itaru Osaka

  Chemistry of Materials, 21 Oct. 2021, Peer-reviewed

  
• Dithieno[ a , e ]pentalenes: Highly Antiaromatic Yet Stable π‐Electron Systems without Bulky Substituents

  Junichi Usuba; Masahiro Hayakawa; Shigehiro Yamaguchi; Aiko Fukazawa

  Chemistry – A European Journal, 23 Nov. 2020, Peer-reviewed

  
• End‐Capping π‐Conjugated Systems with Medium‐Sized Sulfur‐Containing Rings: A Route Towards Solution‐Processable Air‐Stable Semiconductors

  Aiko Fukazawa; Yusuke Toda; Masahiro Hayakawa; Anna Sekioka; Hiroyuki Ishii; Toshihiro Okamoto; Jun Takeya; Yuh Hijikata; Shigehiro Yamaguchi

  Chemistry – A European Journal, 10 Jul. 2018, Peer-reviewed

  

External funds: Kakenhi

• 多重Friedel-Crafts反応を鍵とする新規π共役カチオン化合物の合成と物性調査

  Grant-in-Aid for Research Activity Start-up

  0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields

  Kyoto University

  早川 雅大

  From 31 Aug. 2023, To 31 Mar. 2025, Granted

  π共役;π共役カチオン;近赤外発光

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K19243/
• カルボカチオン導入反応に基づくカチオン性π共役化合物の合成と機能開拓

  Grant-in-Aid for Early-Career Scientists

  Basic Section 33010:Structural organic chemistry and physical organic chemistry-related

  Kyoto University

  早川 雅大

  From 01 Apr. 2024, To 31 Mar. 2026, Granted

  π共役;π共役カチオン;近赤外吸収・発光

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24K17668/

Education

Teaching subject(s)

• From 01 Apr. 2024, To 31 Mar. 2025

  Special study course II (Chemistry) 13

  5640, Year-long, Faculty of Science, 12
• From 01 Apr. 2024, To 31 Mar. 2025

  Advanced Organic Chemistry IC

  7182, Spring, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Advanced Organic Chemistry IB

  7181, Fall, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Advanced Organic Chemistry IA

  7180, Spring, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Advanced Organic Chemistry ID

  7183, Fall, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Seminar on Organic Chemistry IA

  7076, Spring, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Seminar on Organic Chemistry ID

  7079, Fall, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Seminar on Organic Chemistry IC

  7078, Spring, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Seminar on Organic Chemistry IB

  7077, Fall, Graduate School of Science, 1
• From 01 Apr. 2024, To 31 Mar. 2025

  Exercises in Organic Chemistry

  4611, Spring, Faculty of Science, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Chemical Laboratory B

  8635, Fall, Faculty of Science, 8
• From 01 Apr. 2023, To 31 Mar. 2024

  Fundamental Chemical Experiments

  N308, Spring, Institute for Liberal Arts and Sciences, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Organic Chemistry IA

  7076, Spring, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Advanced Organic Chemistry ID

  7183, Fall, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Organic Chemistry ID

  7079, Fall, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Organic Chemistry IC

  7078, Spring, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Seminar on Organic Chemistry IB

  7077, Fall, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Advanced Organic Chemistry IC

  7182, Spring, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Advanced Organic Chemistry IB

  7181, Fall, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Advanced Organic Chemistry IA

  7180, Spring, Graduate School of Science, 1
• From 01 Apr. 2023, To 31 Mar. 2024

  Special study course II (Chemistry) 13

  5640, Year-long, Faculty of Science, 12
• From 01 Apr. 2023, To 31 Mar. 2024

  Chemical Laboratory B

  8635, Fall, Faculty of Science, 8