VISIBLE LASER LIGHTS IN PHOTOINDUCED POLYMERIZATION .6. THIOXANTHONES AND KETOCOUMARINS AS PHOTOINITIATORS

被引:56
作者
FOUASSIER, JP
WU, SK
机构
[1] Laboratoire de Photochimie Générale, Unité de Recherche Associée au CNRS, Ecole Nationale Supérieure de Chimie de Mulhouse, Mulhouse, 68093
[2] Institute of Photographic Chemistry, Academia Sinica, Beijing
关键词
D O I
10.1002/app.1992.070441010
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The efficiency of thioxanthones and ketocoumarins as photoinitiators has been checked in visible laser light-induced polymerization reactions and discussed in terms of excited-state reactivity (as revealed by time-resolved laser spectroscopy). These compounds undergo fast electron transfer reactions in the presence of amines and onium salts. Transient absorption spectra and rate constants of the processes involved have been determined. The combination photoinitiator-amine-onium salt appears as very promising for the design of efficient photosensitive systems.
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页码:1779 / 1786
页数:8
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