在分子设计的基础上,合成了分别以CHO、OH和Br为端基的PPV低聚体,并以后者作为大分子引发剂引发苯乙烯的原子转移自由基聚合, 成功合成了一种新的结构明确的PPV-b-PS二嵌段共聚物.采用IR、UV-VIS、1H-NMR和GPC等手段表征了其结构,并研究了其在CS2溶液中的自组装行为.SEM观察证明,在温度、氩气流速和湿度分别为19.2 ℃,0.8 m3/h和67.8%RH的条件下, PPV-b-PS在质量分数0.2%的CS2溶液中能够自组装成高度有序的六角蜂窝状结构薄膜,其空穴的平均直径为1.15 μm.
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