Photoinduced charge separation of 10-phenyl-10H-phenothiazine2- phenylanthraquinone dyad bridged by bicyclo[2.2.2]octane

Ayumu Karimata; Hidetoshi Kawauchi; Shuichi Suzuki; Masatoshi Kozaki; Noriaki Ikeda; Kazutoshi Keyaki; Koichi Nozaki; Kimio Akiyama; Keiji Okada

doi:10.1246/cl.130062

Photoinduced charge separation of 10-phenyl-10H-phenothiazine2- phenylanthraquinone dyad bridged by bicyclo[2.2.2]octane

Ayumu Karimata, Hidetoshi Kawauchi, Shuichi Suzuki, Masatoshi Kozaki, Noriaki Ikeda, Kazutoshi Keyaki, Koichi Nozaki, Kimio Akiyama, Keiji Okada

Division of Organic- and Biomaterials Research

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Photoinduced charge separation of a phenothiazineanthraquinone dyad 1 with a rigid bicyclo[2.2.2]octane spacer was investigated by means of picosecond and nanosecond transient absorption and time-resolved ESR spectroscopies. Irradiation of the anthraquinone chromophore in 1 produced the chargeseparated (CS) state in THF. Time constants of the formation and the decay of the CS state were determined to be 1.3 ns and 1.0 μs, respectively. Time-resolved ESR showed spin-polarized all-emission signals due to the formation of the CS state via the triplet mechanism.

Original language	English
Pages (from-to)	794-796
Number of pages	3
Journal	Chemistry Letters
Volume	42
Issue number	8
DOIs	https://doi.org/10.1246/cl.130062
Publication status	Published - 2013

ASJC Scopus subject areas

Chemistry(all)

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Photoinduced charge separation of 10-phenyl-10H-phenothiazine2- phenylanthraquinone dyad bridged by bicyclo[2.2.2]octane. / Karimata, Ayumu; Kawauchi, Hidetoshi; Suzuki, Shuichi; Kozaki, Masatoshi; Ikeda, Noriaki; Keyaki, Kazutoshi; Nozaki, Koichi; Akiyama, Kimio; Okada, Keiji.

In: Chemistry Letters, Vol. 42, No. 8, 2013, p. 794-796.

Research output: Contribution to journal › Article › peer-review

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abstract = "Photoinduced charge separation of a phenothiazineanthraquinone dyad 1 with a rigid bicyclo[2.2.2]octane spacer was investigated by means of picosecond and nanosecond transient absorption and time-resolved ESR spectroscopies. Irradiation of the anthraquinone chromophore in 1 produced the chargeseparated (CS) state in THF. Time constants of the formation and the decay of the CS state were determined to be 1.3 ns and 1.0 μs, respectively. Time-resolved ESR showed spin-polarized all-emission signals due to the formation of the CS state via the triplet mechanism.",

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AU - Suzuki, Shuichi

AU - Kozaki, Masatoshi

AU - Ikeda, Noriaki

AU - Keyaki, Kazutoshi

AU - Nozaki, Koichi

AU - Akiyama, Kimio

AU - Okada, Keiji

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