THE EFFECT OF SPIN MULTIPLICITY ON THE PHOTOCHEMICAL-REACTION OF A 2-VINYLNAPHTHALENE-DICHLOROMALEIC ANHYDRIDE SYSTEM

被引：3

作者：

SATOH, SI

NAKAJIMA, T

SHIROTA, Y

机构：

[1] Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565, Yamadaoka

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 1995年 / 21卷 / 8-9期

关键词：

D O I：

10.1163/156856795X00585

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photochemical reaction of a 2-vinylnaphthalene-dichloromaleic anhydride system has been studied in order to elucidate the correlation between the spin multiplicity of an excited-state molecule and reaction pathways in electron donor - acceptor systems. Direct irradiation of the system resulted mostly in the recovery of the starting materials. By contrast, the triplet-sensitized reaction using benzophenone as a sensitizer produced a copolymer and two stereoisomeric cycloadducts of 2-vinylnaphthalene with dichloromaleic anhydride. It is suggested that electron transfer takes place both in the electronically excited singlet and triplet states, although a tripler-state reaction also proceeds simultaneously in the benzophenone-sensitized reaction, and that the reaction pathway of the radical-ion pair generated in the excited singlet state is greatly different from that generated in the excited triplet state.

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页码：939 / 949

页数：11

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