Ultrafast single and double proton transfer in photo-excited [2,2'-bipyridyl]-3,3'-diol

被引：87

作者：

Zhang, H

vanderMeulen, P

Glasbeek, M

机构：

[1] Laboratory for Physical Chemistry, University of Amsterdam, 1018 WS Amsterdam

来源：

CHEMICAL PHYSICS LETTERS | 1996年 / 253卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(96)00213-8

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：

We report on a subpicosecond fluorescence study of [2,2'-bipyridyl]-3,3'-diol using the fluorescent up-conversion technique with a time resolution of approximate to 300 fs. A new short-living fluorescence band, peaking at 568 nm, is observed, which is attributed to the emissive keto-enol tautomer. This tautomer is discussed to be formed in its excited singlet state in a stepwise proton transfer mechanism; eventually the keto-enol tautomer decays into the double-protonated di-keto product, which alternatively could also have been formed in a direct double proton transfer reaction.

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页码：97 / 102

页数：6

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