Effect of viscosity on photoinduced electron transfer reaction: An observation of the Marcus inverted region in homogeneous solvents

被引：2
|
作者：
Saini, Rajesh Kumar [1 ]
Kuchlyan, Jagannath [1 ]
Sarkar, Nilmoni [1 ]
机构：
[1] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India
来源：
CHEMICAL PHYSICS LETTERS | 2016年 / 660卷
关键词：
DRIVING-FORCE DEPENDENCE; TRANSFER DYNAMICS; RATE CONSTANTS; COUMARIN DYES; IONIC LIQUID; ULTRAFAST; AMINES; SURFACTANT; CHEMISTRY; KINETICS;
D O I：
10.1016/j.cplett.2016.08.007
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：
The viscosity effect of homogeneous solvents on the dynamics of photoinduced electron transfer (PET) reaction among the coumarins and N,N-dimethylaniline (DMA) is investigated using steady-state and time-resolved fluorescence spectroscopy. A bell shape Marcus inversion in the ET rates has been detected in the plot of ET rate constant (k(q)) with free energy change (Delta G degrees) in viscous solvents decanol and EG, but it is not observed in DMSO like low viscous solvent. We have also reported that there is no complex formation between the coumarin dye and DMA molecule by using fluorescence correlation spectroscopy. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：81 / 86
页数：6
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