EFFECTS OF THE SOLID-LIQUID INTERFACE ON THE EXCIMER FORMATION OF PYRENE IN TOLUENE CONTAINING POLY(METHYL METHACRYLATE) - A TIME-RESOLVED TOTAL INTERNAL-REFLECTION FLUORESCENCE STUDY

被引：9
|
作者：
HAMAI, S
TAMAI, N
MASUHARA, H
机构：
[1] Microphotoconversion Project2 2 After the period of the Project (October 1988-September 1993), all correspondence should be addressed to Osaka University., ERATO, Sakyo-ku, Kyoto, 606, 15 Morimoto-cho, Shimogamo
来源：
CHEMICAL PHYSICS LETTERS | 1993年 / 213卷 / 3-4期
关键词：
D O I：
10.1016/0009-2614(93)85154-G
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：
By means of time-resolved total internal reflection (TIR) fluorescence measurements, rise and decay profiles of the pyrene excimer fluorescence were examined in toluene containing 3.3 x 10(-4) mol dm-3 of poly (methyl methacrylate) (PMMA, MW = 1 20000). In addition to a reduction of the fluorescence intensity of the pyrene excimer relative to the monomer, the rise and decay rates of the excimer fluorescence were decelerated in a sapphire/toluene interface layer of a thickness less than 60 nm. These findings were interpreted by an increase in the viscosity of the interface layer including PMMA adsorbed on a sapphire surface.
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页码：407 / 411
页数：5
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