SOLVATION DYNAMICS IN SUPERCOOLED LIQUIDS - THE QUINOXALINE TRIPLET-STATE IN 2-MTHF AT THE GLASS-TRANSITION

被引：31

作者：

RICHERT, R ^{[1
]}

机构：

[1] UNIV MARBURG,FACHBEREICH PHYS CHEM,W-3550 MARBURG,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 171卷 / 03期

关键词：

D O I：

10.1016/0009-2614(90)85230-A

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 phosphorescence of quinoxaline as dopant in 2-MTHF is investigated at temperatures near the glass transition of the host solution. Within the accessed time range from 500 μs to 1 s, the emission band is subject to a temporally resolved Stokes shift of ≈ 250 cm-1 monitoring the solvation dynamics of the excited probe molecule. The non-exponential Stokes-shift correlation functions indicate that microscopic aspects of the solvation process have to be considered for rationalizing the experimental data. The results are discussed in the context of solvations dynamics of singlet excitations and the dielectric behaviour of supercooled liquids. © 1990.

引用

页码：222 / 228

页数：7

共 19 条

[1] THEORY OF THE TIME DEVELOPMENT OF THE STOKES SHIFT IN POLAR MEDIA [J].