PICOSECOND DYNAMICS OF STILBENE OLEFIN CONTACT AND SOLVENT-SEPARATED RADICAL ION-PAIRS - ROLE OF ELECTRON-TRANSFER AND RADICAL ION-PAIR DIFFUSION

被引：35

作者：

PETERS, KS

LEE, J

机构：

[1] Department of Chemistry and Biochemistry, University of Colorado, Boulder

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1993年 / 115卷 / 09期

关键词：

D O I：

10.1021/ja00062a031

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Picosecond absorption spectroscopy is used to examine electron transfer and radical ion pair diffusional separation for the contact radical ion pair and solvent-separated radical ion pair for trans-stilbene/fumaronitrile, trans-4-chlorostilbene/fumaronitrile, trans-stilbene/dimethyl fumarate, and trans-4-chlorostilbene/dimethyl furmarate in acetonitrile. The decay of the solvent-separated radical ion pair proceeds by long-range electron transfer to form ground-state reactants and diffusional separation to form free radical ions. The rate of radical ion pair diffusional separation for the contact radical ion pair is independent of the structure of the diffusing species. However, the rate for ion pair diffusion for the solvent-separated radical ion pair is dependent upon the structure of the diffusing species.

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页码：3643 / 3646

页数：4

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