Photoinduced Charge Separation of 10-Phenyl-10H-phenothiazine-2-Phenylanthraquinone Dyad Bridged by Bicyclo[2.2.2]octane
Photoinduced Charge Separation of 10-Phenyl-10H-phenothiazine-2-Phenylanthraquinone Dyad Bridged by Bicyclo[2.2.2]octane
复制标题
DOI：
10.1246/cl.130062
复制
发表时间：
2013-08-05
影响因子：
1.6
通讯作者：
Okada, Keiji
中科院分区：
文献类型：
--
作者：
Karimata, Ayumu;Kawauchi, Hidetoshi;Okada, Keiji
利用皮秒和纳秒瞬态吸收和时间分辨ESR谱研究了含刚性双环[2.2.2]辛烷间隔基的吩噻嗪蒽醌二联体1的光诱导电荷分离。1中的蒽醌发色团的照射产生THE中的电荷分离（CS）态。CS态的形成和衰变的时间常数分别为1.3 ns和1.0 μ s。时间分辨ESR显示自旋极化的所有发射信号，由于通过三重态机制形成的CS状态。
Photoinduced charge separation of a phenothiazine anthraquinone 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 charge-separated (CS) state in THE. Time constants of the formation and the decay of the CS state were determined to be 1.3 ns and 1.0 mu s, respectively. Time-resolved ESR showed spin-polarized all-emission signals due to the formation of the CS state via the triplet mechanism.