| PHOTOPOLYMERIZATION INITIATED BY DIMETHYLAMINOCHALCONE/DIPHENYLIODONIUM SALT COMBINATION SYSTEM SENSITIVE TO VISIBLE LIGHT |
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| 引用本文： | 李军,李妙贞,宋怀海,杨永源,王尔. PHOTOPOLYMERIZATION INITIATED BY DIMETHYLAMINOCHALCONE/DIPHENYLIODONIUM SALT COMBINATION SYSTEM SENSITIVE TO VISIBLE LIGHT[J]. 高分子科学, 1993, 0(2): 163-170 |
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| 作者姓名： | 李军 李妙贞 宋怀海 杨永源 王尔 |
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| 作者单位： | Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101 |
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| 摘 要： | Several dimethylamino-substituted chalcone (i .e. dimethylaminobenzal acetophenone) (DBA) derivatives with intramolecular charge transfer transition character were used as visible light sensitizers for radical photopolymerization initiated by iodonium salt (DPIO). Initiating radical species is produced from DBA sensitized photolysis of DPIO through the single electron transfer, accompanying the bleaching of DBA, The activity of DBA decreases as a function of substituent attached to phenyl ring in the order: DBA-2 (OCH_3) >DBA-1(H)> DBA-3 (Cl). The kinetic study on photopolymerization of MMA was carried out in CH_3CN solution at 30 ℃by dilatometry. The polymerization rate was determined to be proportional to the concentration with exponents of 0.42, 0.25 and 0.86 for DPIO, DBA-1 and MMA, respectively.
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| 收稿时间： | 1992-01-12 |
PHOTOPOLYMERIZATION INITIATED BY DIMETHYLAMINOCHALCONE/DIPHENYLIODONIUM SALT COMBINATION SYSTEM SENSITIVE TO VISIBLE LIGHT |
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| LI Jun,LI Miaozhen,SONG Huaihai,YANG Yongyuan,WANG Erjian. PHOTOPOLYMERIZATION INITIATED BY DIMETHYLAMINOCHALCONE/DIPHENYLIODONIUM SALT COMBINATION SYSTEM SENSITIVE TO VISIBLE LIGHT[J]. Chinese Journal of Polymer Science, 1993, 0(2): 163-170 |
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| Authors: | LI Jun LI Miaozhen SONG Huaihai YANG Yongyuan WANG Erjian |
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| Affiliation: | Institute of Photographic Chemistry; Academia Sinica; Beijing |
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| Abstract: | Several dimethylamino-substituted chalcone (i .e. dimethylaminobenzal acetophenone) (DBA) derivatives with intramolecular charge transfer transition character were used as visible light sensitizers for radical photopolymerization initiated by iodonium salt (DPIO). Initiating radical species is produced from DBA sensitized photolysis of DPIO through the single electron transfer, accompanying the bleaching of DBA, The activity of DBA decreases as a function of substituent attached to phenyl ring in the order:DBA-2(OCH3)>DBA-1(H)>DBA-3(C1).The kinetic study on photopolymerization of MMA was carried out in CH3CN solution at 30℃ by dilatometry.The polymerization rate was determined to be proportional to the concentration with exponents of 0.42,0.25 and 0.86 for SPIO,DBA-1 and MMA,respectively. |
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| Keywords: | Photopolymerization Visible light sensitizer Chalcone derivative Iodonium salt |
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