Role of intermediate state in the excited state dynamics of highly efficient TADF molecules

Takuya Hosokai, Hiroyuki Matsuzaki, Akihiro Furube, Katsumi Tokumaru, Tetsuo Tsutsui, Hajime Nakanotani, Masayuki Yahiro, Chihaya Adachi

研究成果: 著書/レポートタイプへの貢献会議での発言

1 引用 (Scopus)

抄録

We hereby report the results of our direct investigation into the excited-state dynamics of thermally activated delayed fluorescence (TADF) molecules in solution using pump-probe transient absorption spectroscopy (TAS). We found that the charge-transfer (CT) state commonly stated for TADF molecules encompasses two forms: localized and delocalized CT states. A highly efficient TADF molecule, 4CzIPN [Uoyama et al., Nature, 492, 234-238 (2012)], showed both the localized and delocalized CT states, while an inefficient TADF molecule, 2CzPN, exhibited only a localized CT state. By analyzing the time profile of triplet species observed in TAS, we propose that the reverse intersystem crossing (RISC) of 4CzIPN occurs via a mutual interaction in multiple energy levels of localized neutral and CT states, and delocalized CT states.

元の言語英語
ホスト出版物のタイトルOrganic Light Emitting Materials and Devices XX
編集者Franky So, Chihaya Adachi, Jang-Joo Kim
出版者SPIE
ISBN(電子版)9781510602731
DOI
出版物ステータス出版済み - 1 1 2016
イベントOrganic Light Emitting Materials and Devices XX - San Diego, 米国
継続期間: 8 28 20168 30 2016

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
9941
ISSN(印刷物)0277-786X
ISSN(電子版)1996-756X

その他

その他Organic Light Emitting Materials and Devices XX
米国
San Diego
期間8/28/168/30/16

Fingerprint

Charge Transfer
Excited States
Excited states
Fluorescence
Charge transfer
charge transfer
Molecules
fluorescence
excitation
molecules
Absorption Spectroscopy
Absorption spectroscopy
absorption spectroscopy
Energy Levels
Electron energy levels
Pump
Reverse
Probe
energy levels
Pumps

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

これを引用

Hosokai, T., Matsuzaki, H., Furube, A., Tokumaru, K., Tsutsui, T., Nakanotani, H., ... Adachi, C. (2016). Role of intermediate state in the excited state dynamics of highly efficient TADF molecules. : F. So, C. Adachi, & J-J. Kim (版), Organic Light Emitting Materials and Devices XX [994107] (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 9941). SPIE. https://doi.org/10.1117/12.2236248

Role of intermediate state in the excited state dynamics of highly efficient TADF molecules. / Hosokai, Takuya; Matsuzaki, Hiroyuki; Furube, Akihiro; Tokumaru, Katsumi; Tsutsui, Tetsuo; Nakanotani, Hajime; Yahiro, Masayuki; Adachi, Chihaya.

Organic Light Emitting Materials and Devices XX. 版 / Franky So; Chihaya Adachi; Jang-Joo Kim. SPIE, 2016. 994107 (Proceedings of SPIE - The International Society for Optical Engineering; 巻 9941).

研究成果: 著書/レポートタイプへの貢献会議での発言

Hosokai, T, Matsuzaki, H, Furube, A, Tokumaru, K, Tsutsui, T, Nakanotani, H, Yahiro, M & Adachi, C 2016, Role of intermediate state in the excited state dynamics of highly efficient TADF molecules. : F So, C Adachi & J-J Kim (版), Organic Light Emitting Materials and Devices XX., 994107, Proceedings of SPIE - The International Society for Optical Engineering, 巻. 9941, SPIE, Organic Light Emitting Materials and Devices XX, San Diego, 米国, 8/28/16. https://doi.org/10.1117/12.2236248
Hosokai T, Matsuzaki H, Furube A, Tokumaru K, Tsutsui T, Nakanotani H その他. Role of intermediate state in the excited state dynamics of highly efficient TADF molecules. : So F, Adachi C, Kim J-J, 編集者, Organic Light Emitting Materials and Devices XX. SPIE. 2016. 994107. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2236248
Hosokai, Takuya ; Matsuzaki, Hiroyuki ; Furube, Akihiro ; Tokumaru, Katsumi ; Tsutsui, Tetsuo ; Nakanotani, Hajime ; Yahiro, Masayuki ; Adachi, Chihaya. / Role of intermediate state in the excited state dynamics of highly efficient TADF molecules. Organic Light Emitting Materials and Devices XX. 編集者 / Franky So ; Chihaya Adachi ; Jang-Joo Kim. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).
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