Masahiro Hayakawa

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, Sep 18, 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, Jul 10, 2024 Peer-reviewedLead 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, Jun 26, 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

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, May 16, 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, 14(1), May 15, 2023 Peer-reviewedLead author

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, Mar 27, 2023 Peer-reviewedLead author

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

Shu I Takagi, Masahiro Hayakawa, Aiko Fukazawa

Chemistry – A European Journal, Mar 11, 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, 62 202217512, Feb 15, 2023 Peer-reviewedLead 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, 145(3) 1505-1511, Dec 22, 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

Aug 16, 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, 58(15) 2548-2551, Jan, 2022 Peer-reviewedLead 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 …

Chemistry of Materials, 33(21) 8183-8193, Oct 21, 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, 27(5) 1638-1647, Nov 23, 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, 24(44) 11503-11510, Jul 10, 2018 Peer-reviewed

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