ELECTROLYTE EFFECTS ON MOLECULAR RADIATIONLESS DECAY - THE PHOTOPHYSICS OF 3-AMINOFLUORENONE IN ACETONITRILE-SALT SOLUTIONS

被引：22
作者：
THOMPSON, PA
SIMON, JD
机构：
[1] Department of Chemistry, University of California, San Diego, San Diego, CA 92093-0341
来源：
JOURNAL OF CHEMICAL PHYSICS | 1992年 / 97卷 / 07期
关键词：
D O I：
10.1063/1.463879
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：
Salt effects on the photophysics of 3-aminofluoren-9-one (3-AF) are examined in acetonitrile solution. Infrared spectroscopy reveals no specific interactions between 3-AF and the dissolved ions. Combined steady state and time-resolved studies are used to determine the S0 <-- S1 nonradiative and radiative rate constants. Added salt has a small effect on the radiative rate, which can be quantitatively accounted for by the Strickler-Berg equation. In contrast, electrolytes strongly influence the nonradiative decay rate which are quantitatively accounted for in terms of the energy gap law. No correlation is observed between the energy gap and the ionic strength of the solution. The results are compared to theoretical models for molecular solvation in ionic solutions.
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页码：4792 / 4799
页数：8
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