EXCHANGE MODEL OF VIBRATIONAL DEPHASING IN S1 TRANS-STILBENE IN SOLUTION AND ITS POSSIBLE CORRELATION WITH THE ISOMERIZATION REACTION

被引：39

作者：

HAMAGUCHI, H

IWATA, K

机构：

[1] Molecular Spectroscopy Laboratory, Kanagawa Academy of Science and Technology, 213, KSP East 301

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 208卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(93)87174-2

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 changes of the peak position and bandwidth of the olefinic C=C stretch Raman band of S1 trans-stilbene in normal alkanes have been analyzed on the basis of an asymmetric exchange model in which the C=C stretch frequency hops to and fro between two discrete values belonging to two different electronic states. Both the time-dependent spectral changes in a single solvent and the solvent-dependent changes at a fixed delay time are successfully interpreted by this exchange model. A correlation has been found between the hopping rate and the rate of the trans to perpendicular isomerization, suggesting that the process of isomerization involves the same exchange mechanism. The proposed exchange model may be generalized and described as a time-domain expression of the solvent-induced polarization of the solute molecule.

引用

页码：465 / 470

页数：6

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