T1 POTENTIAL-ENERGY CURVES AND ONE-WAY PHOTO-ISOMERIZATION OF STYRYL AROMATICS

被引：9

作者：

ORLANDI, G ^{[1
]}

NEGRI, F ^{[1
]}

MAZZUCATO, U ^{[1
]}

BARTOCCI, G ^{[1
]}

机构：

[1] UNIV PERUGIA,DIPARTMENTO CHIM,I-06100 PERUGIA,ITALY

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1990年 / 55卷 / 01期

关键词：

D O I：

10.1016/1010-6030(90)80016-Q

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 "one-way" (cis --> trans but not trans --> cis) photo-isomerization on the lowest triplet state T1 of styryl aromatics containing polycyclic groups is discussed. The aim is to obtain information about the shape of the potential energy curve of T1 along the torsion coordinate. On the basis of a qualitative model and simple kinetic arguments it is shown that a sizable barrier at the twisted geometry is not only compatible with but also required by the "one-way" mechanism.

引用

页码：37 / 42

页数：6

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