Evidence for dynamic heterogeneity near T-g from the time-resolved inhomogeneous broadening of optical line shapes

被引：103

作者：

Richert, R

机构：

[1] Max-Planck-Inst. F. Polymerforschung, 55128 Mainz

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 33期

关键词：

D O I：

10.1021/jp9713219

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：

The temporal evolution of inhomogeneous spectra emitted by dye molecules in the course of their solvation within a supercooled liquid is analyzed, where the average emission energy v(t) probes the dielectric relaxation. The observed increase in the optical line width, sigma(inh)(t), near the glass transition is compared to corresponding simulations under the conditions of spatially heterogeneous and homogeneous solvation dynamics. From this data on higher moments of the relaxing quantity, we conclude on the spatial variation of relaxation times.

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页码：6323 / 6326

页数：4

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