影像科学与光化学 ›› 2006, Vol. 24 ›› Issue (4): 245-253.DOI: 10.7517/j.issn.1674-0475.2006.04.245

• 研究论文 • 上一篇    下一篇

香豆素染料与羟基苯基碘鎓盐光敏引发体系的研究

李雪1,2, 吴飞鹏1, 施盟泉1   

  1. 1. 中国科学院, 理化技术研究所, 北京, 100080;
    2. 中国科学院, 研究生院, 北京, 100049
  • 收稿日期:2005-12-27 修回日期:2006-03-07 出版日期:2006-07-23 发布日期:2006-07-23
  • 通讯作者: 飞鹏, 电话:82543569.
  • 基金资助:
    国家自然科学基金资助项目(50173031;50403030).

Study on the Photosensitive System of Coumarin and [Hydroxy(toxyloxy)iodo] benzene

LI Xue1,2, WU Fei-peng1, SHI Meng-quan1   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P.R. China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R. China
  • Received:2005-12-27 Revised:2006-03-07 Online:2006-07-23 Published:2006-07-23

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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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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盐的光敏体系提供了有价值的信息.

关键词: 香豆素1, 羟基苯基碘鎓盐(HTIB), 电子转移光敏化, 溶剂效应

Abstract: 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 iodonium.

Key words: coumarin 1, [hydroxy(toxyloxy)iodo]benzene, electron transfer photosensitization, solvent effects

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