VISIBLE LIGHT PHOTOPOLYMERIZATION OF METHYL METHACRYLATE COINITIATED WITH TITANOCENE AND KETOCOUMARIN DYE  

作　　者：高放 

机构地区：[1]Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101, China

出　　处：《Chinese Journal of Polymer Science》1999年第5期465-470,共6页高分子科学（英文版）

基　　金：This work was financially supported by the National Nature Science Foundation of China (Project number: 59773011).

摘　　要：The photosensitive system which can initiate methyl methacrylate with visible light was composed of compound 1 bis( eta-5-cyclopentadienyl)-bis[2,6-difluoro-3-(1-H-pyrrolyl)phenyl]titanium (titanocene) and compound 2 [(3,3'-carbonylbis(7-diethylamino coumarin)] (ketocoumarin dye). The high photosensitive initiating efficiency of this photosensitive system could be very promising for efficient system for laser (Ar+ 488 nm) to plate and photocuring for thick coating and ink. The variation of UV-visible spectrum of compound 2 during irradiation indicates that photolysis of compound 2 is through its triplet state and it can be quenched by O-2 The much quicker photobleaching of the photosensitive system suggests that there exists certain quick electron transfer reaction between compounds 1 and 2.The photosensitive system which can initiate methyl methacrylate with visible light was composed of compound 1 bis( eta-5-cyclopentadienyl)-bis[2,6-difluoro-3-(1-H-pyrrolyl)phenyl]titanium (titanocene) and compound 2 [(3,3'-carbonylbis(7-diethylamino coumarin)] (ketocoumarin dye). The high photosensitive initiating efficiency of this photosensitive system could be very promising for efficient system for laser (Ar+ 488 nm) to plate and photocuring for thick coating and ink. The variation of UV-visible spectrum of compound 2 during irradiation indicates that photolysis of compound 2 is through its triplet state and it can be quenched by O-2 The much quicker photobleaching of the photosensitive system suggests that there exists certain quick electron transfer reaction between compounds 1 and 2.

关 键 词：photosensitive system PHOTOPOLYMERIZATION photobleaching PHOTOLYSIS electron transfer 

分 类 号：O631.5[理学—高分子化学]