Photoinduced intermolecular electron transfer between Coumarin dyes and electron donating solvents in cetyltrimethylammonium bromide (CTAB) micelles: evidence for Marcus inverted region
Photoinduced intermolecular electron transfer between Coumarin dyes and electron donating solvents in cetyltrimethylammonium bromide (CTAB) micelles: evidence for Marcus inverted region
复制标题
DOI：
10.1016/j.cplett.2003.10.105
复制
发表时间：
2003-12-15
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;Chakrabarty, D;Sarkar, N
本文报道了在十六烷基三甲基溴化铵（CTAB）胶束溶液中不同香豆素染料和芳香胺之间的光致电子转移。通过时间分辨荧光各向异性测量，确定了染料分子在胶束中的位置。CTAB胶束溶液中K-q值随电子转移反应自由能变化（DeltaGdegrees）的变化曲线与Marcus理论预测的速率相反。利用二维电子传递模型解释了马库斯倒区。(C) 2003 Elsevier B.V.版权所有
The photoinduced electron transfer between different Coumarin dyes and aromatic amines in cetyltrimethylammonium bromide (CTAB) micellar solution has been reported using both steady state and time resolved fluorescence quenching measurement. The location of the dye molecules in micelles has been confirmed by the time resolved fluorescence anisotropy measurement. The plot of the observed K-q values in the CTAB micellar solution with the free energy change (DeltaGdegrees) for electron transfer reaction show an inversion in the observed rate as predicted by Marcus theory. The two-dimensional electron transfer model has been employed to interpret the Marcus inverted region. (C) 2003 Elsevier B.V. All rights reserved.