THE INFLUENCE OF SOLVENT POLARITY ON THE NONRADIATIVE DECAY OF EXCIPLEXES

被引：81

作者：

VANHAVER, P ^{[1
]}

HELSEN, N ^{[1
]}

DEPAEMELAERE, S ^{[1
]}

VANDERAUWERAER, M ^{[1
]}

DESCHRYVER, FC ^{[1
]}

机构：

[1] KATHOLIEKE UNIV LEUVEN,DEPT CHEM,CELESTIJNENLAAN 200F,B-3001 LOUVAIN,BELGIUM

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1991年 / 113卷 / 18期

关键词：

D O I：

10.1021/ja00018a021

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The efficiency with which the intramolecular exciplex between pyrene and indole or between pyrene and a tertiary amine decays to the locally excited triplet state of pyrene is determined using laser-induced optoacoustic spectroscopy. Upon increasing the solvent polarity, the relative efficiency of this intersystem crossing process decreases compared to the efficiency of the internal conversion process to the singlet ground state. These results can be rationalized in the framework of the Marcus theory. The results obtained by laser-induced optoacoustic spectroscopy are confirmed by transient absorption spectroscopy of the pyrene triplet in the case of the intramolecular exciplex of 1-(1-pyrenyl)3-N,N-dimethylaminopropane.

引用

页码：6849 / 6857

页数：9

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