Photoinduced electron transfer from dimethyl aniline to cournarin dyes in reverse micelles
Photoinduced electron transfer from dimethyl aniline to cournarin dyes in reverse micelles
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DOI：
10.1016/j.cplett.2005.01.099
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发表时间：
2005-03-31
影响因子：
2.8
通讯作者：
Sarkar, N
中科院分区：
文献类型：
--
作者：
Chakraborty, A;Seth, D;Sarkar, N
用稳态和时间分辨荧光光谱研究了不同香豆素染料与N，N-二甲基苯胺在ACT反胶束中的光致电子转移。我们观察到反胶束中的电子转移速率比纯溶剂中的慢。此外，在自由能变化与电子转移速率的关联中，我们还观察到电子转移速率的滞后。双分子电子转移中这种意想不到的结果被认为是由于反应物在非均相ACT系统中的不同扩散速度引起的。(C)2005 Elsevier B.V.保留所有权利。
Photoinduced electron transfer between different coumarin dyes and N,N-dimethyl aniline has been investigated in ACT reverse micelle using steady state and time resolved fluorescence spectroscopy. We have observed a slower electron transfer rate in reverse micelle in comparison to that in the neat solvent. Moreover, we have observed retardation in the electron transfer rate in the correlation of the free energy change with the electron transfer rate. This unexpected outcome in a bimolecular electron transfer is assumed to be arising from the different diffusional rate of the reactants in the inhomogeneous ACT system. (c) 2005 Elsevier B.V. All rights reserved.