中文摘要：

本文通过吸收光谱、荧光猝灭、光聚合方法对羟基苯基碘镛盐（HTIB）的光敏引发体系进行了研究，发现具有给电子性的光敏剂香豆素1可以将引发剂羟基苯基碘镛盐的光响应移到长波区，而引发聚合效率与溶剂的性质有很大的关系．在一般极性溶剂中如DMSO中能有效地引发甲基丙烯酸甲酯（MMA）光聚合，而在电子受体性质的极性溶剂如乙腈中，光聚合反应受阻，这归结于香豆素1与羟基苯基碘镛盐形成络合物，使得光反应后生成不具活性的产物．该结果对研究其它单苯基碘镛盐的光敏体系提供了有价值的信息．

英文摘要：

The photosensitive system of [ hydroxy（toxyloxy） iodo ] benzene （HTIB） was studied by absorption spectra, fluorescence quenching and photopolymerization. The photosensitizer coumarin 1 with electron-donating property could extend the absorption of HTIB to near UV. The initiation efficiency of coumarin 1/HTIB system depended on the solvents largely. In DMSO, the polymerization of methyl methacrylate （MMA） could be carried out efficiently. However the photopolymerization was inhibited in acetonitrile. It was ascribed to the complex formed between coumarin 1 and HTIB photolyzed to unreactive species after irradiation in acetonitrile. The results obtained here can afford valuable information for the study of other photosensitive system contained monoaryl iodonuim.