活性自由基聚合法制备以C_(60)封端的聚苯乙烯

Preparation of C_( 60)-end-Capped Polystyrene with Living Free Radical Polymerization

通过活性自由基聚合的方法制备了以 2 ,2 ,6,6-四甲基 -4 -羟基哌啶氮氧自由基 (TEMPOL)封端的聚苯乙烯大分子 ,实验结果证明该反应体系是一个典型的活性自由基聚合体系 ,同时研究了TEMPOL/AIBN的比例及AIBN的含量对聚合反应的影响。用以TEMPOL封端的聚苯乙烯和C6 0 反应 ,制得了C6 0 的聚苯乙烯高分子衍生物 ,紫外和GPC结果均证明C6 0 已连接到聚苯乙烯的长链上 ,GPC的结果还证明 ,C6 0 均为单取代产物 ,即得到以C6 0 封端的聚苯乙烯高分子衍生物。

A series of TEMPOL(2,2,6,6-tetramethyl-4-hydropiperdine-1-oxyl)-end-capped polystyrene were prepared with controlled living free radical polymerization. The influences of TEMPOL/AIBN ratio and the AIBN content on the polymerization were also studied, the experimental results proved that this reaction was a typical living free radical polymerization. The C 60 -end-capped polystyrene was synthesized by the reaction of TEMPOL-end-capped polystyrene with C 60 . The experimental results of UV-Vis and GPC show that C 60 is chemically bonded to the polystyrene chain, and GPC results imply that all C 60 is monosubstituted, i.e. the polymer is C 60 -end-capped polystyrene.