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.
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.
