末端含C_(60)单链窄分子量分布高分子在溶液中的自组装行为  

THE MORPHOLOGY INVESTIGATION OF HAMMER-LIKE C_(60) CONJUGATED POLYSTYRENE IN SOLUTION

作　　者：黎淳昭[1] 张炜程[1] 周鹏[1] 杜福胜[1] 李子臣[1] 李福绵[1] 

机构地区：[1]北京大学化学学院高分子材料和工程系,北京100871

出　　处：《高分子学报》2001年第4期557-560,共4页Acta Polymerica Sinica

摘　　要：A hammer like C 60 conjugated polystyrene was synthesized via atom transfer radical polymerization using bromine ended polystyrene as an initiator.The self assembly aggregating behavior of the hammer like polymer was investigated by DLS,GPC and TEM.Two narrow distributions with hydrodynamic radius 29 5 nm and 1 3 nm were observed in DLS,attributed respectively to the aggregates and single hammer like polymer molecules.In the eluograph of GPC,two distributions were also observed,attributed respectively to the aggregates and single hammer like polymer.In TEM,micelle particles with average diameter 65 nm were observed,agreed well with the results obtained by DLS.The diameter of aggregates of two hammer like C 60 conjugated polystyrene samples was compared and possible explanations were proposed.A hammer-like C-60 conjugated polystyrene was synthesized via atom transfer radical polymerization using bromine-ended polystyrene as an initiator. The self-assembly aggregating behavior of the hammer-like polymer was investigated by DLS, GPC and TEM. Two narrow distributions with hydrodynamic radius 29.5 nm and 1.3 nm were observed in DLS, attributed respectively to the aggregates and single hammer-like polymer molecules. In the eluograph of GPC, two distributions were also observed, attributed respectively to the aggregates and single hammerlike polymer. In TEM, micelle particles with average diameter 65 nm were observed, agreed well with the results obtained by DLS. The diameter of aggregates of two hammer-like C-60 conjugated polystyrene samples was compared and possible explanations were proposed.

关 键 词：原子转移自由基聚合 胶束 光散射 自组装 碳60 形态 透射电镜 高分子溶液 

分 类 号：O631[理学—高分子化学]