DIFFUSION EFFECTS ON PYRENE EXCIMER KINETICS - DETERMINATION OF THE EXCIMER FORMATION RATE COEFFICIENT TIME-DEPENDENCE

被引:25
作者
DUHAMEL, J
WINNIK, MA
BAROS, F
ANDRE, JC
MARTINHO, JMG
机构
[1] UNIV TORONTO,LASH MILLER CHEM LABS,TORONTO M5S 1A1,ONTARIO,CANADA
[2] UNIV TORONTO,ERINDALE COLL,MISSISSAUGA L5L 1C6,ONTARIO,CANADA
[3] INPL,ENSIC,F-54001 NANCY,FRANCE
[4] INST SUPER TECN,CTR QUIM FIS MOLEC,P-1096 LISBON,PORTUGAL
关键词
D O I
10.1021/j100203a042
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
A numerical method is presented to recover the excimer formation rate coefficient from the experimental monomer and excimer decay curves. This method was applied to study pyrene monomer-excimer kinetics in cyclohexanol from 25-degrees-C up to 85-degrees-C. We observed that the time evolution of the rate coefficient deviates from the Smoluchowski equation, showing a minimum at high temperatures and concentrations, when the reversibility effects are more pronounced.
引用
收藏
页码:9805 / 9810
页数:6
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