Kinetics of Pyrene Fluorescence Quenching in the Presence of N,N-Dimethylaniline on the Surface of Titania Silica Colloids

被引：0
|
作者：
G. N. Starukh
N. P. Smirnova
A. M. Eremenko
A. A. Chuiko
V. Ya. Zabuga
机构：
[1] National Academy of Sciences of Ukraine,Institute of Surface Chemistry
[2] Taras Shevchenko National University,undefined
来源：
Theoretical and Experimental Chemistry | 2003年 / 39卷 / 2期
关键词：
titania–silicas; fluorescence quenching; formal kinetic analysis;
D O I：
10.1023/A:1024029809746
中图分类号：
学科分类号：
摘要：
A study was carried out on pyrene (Py) fluorescence quenching in the presence of N,N-dimethylaniline (DMA) on the surface of titania–silica colloids. Py fluorescence quenching is a function of the TiO2 content in the binary colloids. The coadsorption of DMA molecules is accompanied by an increase in the Py fluorescence intensity due to the competitive adsorption of amine on the surface. Calculation of the formal kinetics of Py fluorescence quenching indicates the existence of two groups of sites differing in adsorption activity within each group.
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页码：109 / 114
页数：5
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