On the formation of BHDC reversed micelles in benzene probed by the 1-methylpyrene-N,N-dimethylaniline exciplex

被引：6
|
作者：
Borsarelli, CD [1 ]
Previtali, CM [1 ]
Cosa, JJ [1 ]
机构：
[1] UNIV NACL RIO CUARTO,DEPT QUIM & FIS,RA-5800 RIO CUARTO,ARGENTINA
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1996年 / 179卷 / 01期
关键词：
reversed micelles; BHDC; exciplex quenching; 1-methylpyrene; N; N-dimethylaniline; aggregation;
D O I：
10.1006/jcis.1996.0185
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 fluorescence quenching of the 1-methylpyrene-N,N-dimethylaniline exciplex by quaternary ammonium salts is used to probe the formation of reversed micelles in BHDC-benzene-water solutions. The fluorescence of the exciplex is dependent on the BHDC concentration and the water content. A Stern-Volmer plot shows the existence of three regions for the fluorescence quenching. They are associated with the presence of BHDC ion pairs at very low concentrations, truly reversed micelles at concentrations higher than 0.02 M, and a transition region at intermediate concentrations. (C) 1996 Academic Press, Inc.
引用
收藏
页码：34 / 36
页数：3
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