Ultrafast spectroscopy of the solvent dependence of electron transfer in a perylenebisimide dimer

被引：72

作者：

Holman, MW

Yan, P

Adams, DM ^{[1
]}

Westenhoff, S

Silva, C

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2005年 / 109卷 / 38期

关键词：

D O I：

10.1021/jp0502050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate the photoinduced intramolecular electron-transfer (IET) behavior of a perylenebisimide dimer in a variety of solvents using femtosecond transient absorption spectroscopy. Overlapping photoinduced absorptions and stimulated emission give rise to complicated traces, but they are well fit with a simple kinetic model. IET rates were found to depend heavily on solvent dielectric constant. Good quantitative agreement with rates derived from fluorescence quantum yield and time-resolved fluorescence measurements was found for forward electron transfer and charge recombination rates.

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收藏

页码：8548 / 8552

页数：5

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