Ultrafast photoexcitation dynamics of π-conjugated bodipy-anthracene-radical triad system

Katsuichi Kanemoto; Atsushi Fukunaga; Motoaki Yasui; Daisuke Kosumi; Hideki Hashimoto; Hirotaka Tamekuni; Yuichi Kawahara; Yohei Takemoto; Jun Takeuchi; Yozo Miura; Yoshio Teki

doi:10.1039/C2RA20473H

Ultrafast photoexcitation dynamics of π-conjugated bodipy-anthracene-radical triad system†

Katsuichi Kanemoto,*^a Atsushi Fukunaga,^a Motoaki Yasui,^a Daisuke Kosumi,^a Hideki Hashimoto,^a Hirotaka Tamekuni,^b Yuichi Kawahara,^b Yohei Takemoto,^b Jun Takeuchi,^c Yozo Miura^c and Yoshio Teki*^b

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* Corresponding authors

^a CREST/JST and Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, Japan
E-mail: kkane@sci.osaka-cu.ac.jp

^b Division of Molecular Material Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, Japan
E-mail: teki@sci.osaka-cu.ac.jp

^c Department of Applied Chemistry, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, Japan

Abstract

Ultrafast photoexcitation dynamics of the bodipy-anthracene-radical triad of the photoexcited quartet state and its control compounds were investigated by fs-laser spectroscopy. The fs-spectroscopy successfully unveiled complicated dynamical processes consisting of electron-transfer, energy-transfer, and charge separated ion-pair generation. Based on the results, a pathway leading to the high-spin state generation is discussed.

RSC Advances

Ultrafast photoexcitation dynamics of π-conjugated bodipy-anthracene-radical triad system†

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Ultrafast photoexcitation dynamics of π-conjugated bodipy-anthracene-radical triad system

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