通过两步反应合成了6种二芳基碘鎓盐,研究了4,4′-二乙酰胺基苯基碘六氟磷酸盐的合成,确定了最佳工艺条件:乙酰苯胺与碘酸钾的摩尔比为2.2∶1.0,15 m l乙酸在25℃反应24 h,产率为47.6%。通过应用实验,测试了6种产物的光引发剂性能,对碘...通过两步反应合成了6种二芳基碘鎓盐,研究了4,4′-二乙酰胺基苯基碘六氟磷酸盐的合成,确定了最佳工艺条件:乙酰苯胺与碘酸钾的摩尔比为2.2∶1.0,15 m l乙酸在25℃反应24 h,产率为47.6%。通过应用实验,测试了6种产物的光引发剂性能,对碘鎓盐光引发剂的构效关系进行了探讨。实验证明4种负离子为PF6-和BF4-的产物具有较好光引发性和抗氧阻能力。引入共轭基团的二芳基碘鎓盐其最大吸收波长明显增大,光引发性增强。展开更多
3-Chloro-2-（chloromethyl）-1-propene（CCMP） was synthesized and used to initiate atom transfer radical polymerization（ATRP） of styrene catalyzed by copper（Ⅰ） chloride/2,2′-bipyridine at 125℃.As a difunctional...3-Chloro-2-（chloromethyl）-1-propene（CCMP） was synthesized and used to initiate atom transfer radical polymerization（ATRP） of styrene catalyzed by copper（Ⅰ） chloride/2,2′-bipyridine at 125℃.As a difunctional initiator,CCMP can initiate ATRP of styrene with two living end sites at the same time.The structure of the obtained α,ω-chloropolystyrene was confirmed by（）1H-NMR spectra.The living character of the ATRP process is indicated by narrow molecular weight distributions of the obtained polystyrene（Mw/Mn<1.5）,a linear（ln（[M]0/[M]）） versus time profile and predictable molecular weights proportional to monomer conversion.展开更多
文摘通过两步反应合成了6种二芳基碘鎓盐,研究了4,4′-二乙酰胺基苯基碘六氟磷酸盐的合成,确定了最佳工艺条件:乙酰苯胺与碘酸钾的摩尔比为2.2∶1.0,15 m l乙酸在25℃反应24 h,产率为47.6%。通过应用实验,测试了6种产物的光引发剂性能,对碘鎓盐光引发剂的构效关系进行了探讨。实验证明4种负离子为PF6-和BF4-的产物具有较好光引发性和抗氧阻能力。引入共轭基团的二芳基碘鎓盐其最大吸收波长明显增大,光引发性增强。
文摘3-Chloro-2-（chloromethyl）-1-propene（CCMP） was synthesized and used to initiate atom transfer radical polymerization（ATRP） of styrene catalyzed by copper（Ⅰ） chloride/2,2′-bipyridine at 125℃.As a difunctional initiator,CCMP can initiate ATRP of styrene with two living end sites at the same time.The structure of the obtained α,ω-chloropolystyrene was confirmed by（）1H-NMR spectra.The living character of the ATRP process is indicated by narrow molecular weight distributions of the obtained polystyrene（Mw/Mn<1.5）,a linear（ln（[M]0/[M]）） versus time profile and predictable molecular weights proportional to monomer conversion.
