规整链球型含C_(60)聚苯乙烯的亲水化修饰及其在水中的自组装

C60作为碳的第三种同素异型体,一经发现就为当今科学研究所关注.其独特的光学,电学性能吸引了许多化学工作者的不懈努力,以探索其在化学、材料科学等领域的应用.精确的化学修饰不仅是改善其较差的溶解和加工性能的主要途径之一,而且更能提供规整的结构,以利于对其性能的深入研究.

HYDROPHILIC MODIFICATION OF WELL-DEFINED HAMMER-SHAPED C60-PS AND THE SELF-ASSEMBLY BEHAVIOR THEREFROM

To achieve well defined amphiphilic C 60 containing macromolecules,C 60 conjugated polystyrene(C 60 PS)was first synthesized via tandem atom transfer radical polymerization(ATRP).With the help of tetrabutylammonium bromide(TBAB),taurine(2 aminoethanesulfonic acid) can be carried from water phase into the phenyl chloride phase and then react with C 60 PS.The final product——taurine modified C 60 conjugated polystyrene—is a novel type of highly asymmetric amphiphilic diblock copolymers,which can form spherical crew cut type micelles by adding water in small amounts into its tetrahydrofuran solution.UV vis spectroscopy and trasmission electronic microscopy have been employed to monitor the aggregating process of these spherical micelles and observe their final morphology respectively.