MOLECULAR PROBING OF DIELECTRIC-RELAXATION IN THE GLASS-TRANSITION REGION

被引：45

作者：

RICHERT, R

机构：

[1] Fachbereich Physikalische Chemie, Philipps-Universität, W-3550 Marburg, Hans-Meerwein Strasse

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 199卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(92)80131-T

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：

Conventional dielectric epsilon*(omega) data and solvation dynamic C(t) data are recorded simultaneously, assuring perfect coincidence of experimental conditions for the two relaxation phenomena in the glass-former 2-MTHF doped with quinoxaline. The dynamic MSA theory for dipolar solvation turns out to relate the observed Stokes-shift dynamics to the dielectric data in a quantitative fashion. The agreement between theory and experiment facilitates access to "microscopic" dielectric relaxation via spectroscopy of appropriate molecular probes in supercooled liquids.

引用

页码：355 / 359

页数：5

共 22 条

[1] RELAXATION IN LIQUIDS, POLYMERS AND PLASTIC CRYSTALS - STRONG FRAGILE PATTERNS AND PROBLEMS [J].