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芳香叔胺引发丙烯腈(AN)光聚合是通过形成激基复合物(exciPlex)进行的。紫外光谱和荧光光谱表明,芳香叔胺在基态可以和AN形成电荷转移复合物(CTC),而在激发态可和AN形成exciplc(称定域激发)。CTC经光照亦可激发(称CTC激发)。 定域激发引起光聚合速率为CH_3C_6H_4N(CH_3)_2>C_6H_5N(CH_3)_2>HOCH_2·C_6H_4N(CH_3)_2>CH_3C_6H_4N(CH_2CH_2OH)_2,与芳胺荧光被AN淬灭的Stern-Vo-lmer常数顺序一致。CTC激发引起的光聚合顺序为:CH_3C_6H_4N(CH_3)_2>CH_3C_6H_4N(CH_2CH_2OH)_2>HOCH_2C_6H_4N(CH_3)_2>C_6H_5N(CH_3)_2,与芳胺上取代基推电子能力一致。端基分析表明聚合物有芳胺端基。
Aromatic tertiary amine initiated acrylonitrile (AN) photopolymerization is performed by forming an exciPlex. UV and fluorescence spectra show that aromatic tertiary amines can form charge-transfer complexes (CTCs) with AN in the ground state and exciplc (known as localized excitation) with AN in the excited state. CTC can also be excited by the light (called CTC excitation). The rate of photopolymerization induced by localized excitation was the order of Stern-Vo-lmer constants which were quenched by AN with respect to the fluorescence of aromatic amine by CH_3C_6H_4N (CH_3) _2> C_6H_5N (CH_3) _2> HOCH_2C_6H_4N (CH_3) _2> CH_3C_6H_4N (CH_2CH_2OH) _2 Consistent. The sequence of photopolymerization induced by CTC excitation is: CH_3C_6H_4N (CH_3) _2> CH_3C_6H_4N (CH_2CH_2OH) _2> HOCH_2C_6H_4N (CH_3) _2> C_6H_5N (CH_3) _2. End group analysis shows that the polymer has aromatic amine end groups.