SPECTRAL-LUMINESCENT STUDY OF ORIENTATION STATES OF DYE MOLECULES ADSORBED ON A NONUNIFORM SURFACE

被引:0
|
作者
SECHKAREV, AV
BEGER, VN
机构
[1] Institute of Fine Mechanics and Optics, Technical University, St. Petersburg, 197101
关键词
DYE MOLECULES; QUANTUM EFFICIENCY OF FLUORESCENCE; EMISSION ANISOTROPY; STATISTICAL EQUILIBRIUM; MECHANICAL EQUILIBRIUM; MICROPOROUS GLASS; ORIENTATION STATES; LAW OF MASS ACTION;
D O I
10.1007/BF00700895
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Brownian reorientation motion of molecules results in an equilibrium of orientation states of adsorbed molecules. The character of the orientation equilibrium depends on the total concentration of adsorbed molecules. Since optical properties of molecules are sensitive to the intermolecular interaction with an adsorbent, each orientation state has an individual luminescence spectrum. A change in the equilibrium results in complicated concentration and temperature dependences of the spectra of adsorbed molecules. These dependences have been experimentally observed for several dyes adsorbed on microporous silicate glass. Equilibrium constants and fractal dimensions of the spatial distribution of dye molecules in porous matrices have been determined.
引用
收藏
页码:1237 / 1241
页数:5
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