Novel perfluorocyclobutyl aryl ether‐based well‐defined amphiphilic block copolymer
Novel perfluorocyclobutyl aryl ether‐based well‐defined amphiphilic block copolymer
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DOI：
10.1002/pola.24884
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发表时间：
2011-10
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影响因子：
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通讯作者：
Wenqiang Yao;Yongjun Li;Sen Zhang;Hao Liu;Xiaoyu Huang
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文献类型：
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作者：
Wenqiang Yao;Yongjun Li;Sen Zhang;Hao Liu;Xiaoyu Huang
通过连续可逆加成断裂链转移（RAFT）聚合合成了一系列包含疏水性聚（对（2-（对甲苯氧基）全氟环丁氧基）苯基甲基丙烯酸酯）（PTPFCBPMA）和亲水性聚（2-（二乙氨基）甲基丙烯酸乙酯）（PDEAEMA）链段的含氟两亲性二嵌段共聚物。首先，以二硫代苯甲酸异丙苯酯为链转移剂，以2,2'-偶氮二异丁腈引发甲基丙烯酸对(2-(对甲苯氧基)全氟环丁氧基)苯基酯的RAFT均聚，结果表明，该过程以受控方式进行，数均分子量随单体转化率线性增加，而多分散指数保持在1.30以下。然后使用二硫代苯甲酸酯封端的 PTPFCHPMA 均聚物作为大分子 RAFT 试剂介导甲基丙烯酸 2-(二乙氨基)乙酯的 RAFT 聚合，得到具有不同嵌段长度和窄分子量分布 (Mw/Mn ≤ 1.28) 的 PTPFCBPMA-b-PDEAEMA 两亲性二嵌段共聚物。使用N-苯基-1-萘胺作为探针，通过荧光光谱技术测定所获得的两亲性二嵌段共聚物的临界胶束浓度。分别通过透射电子显微镜和动态光散射研究了形成的胶束的形态和尺寸。 © 2011 Wiley periodicals, Inc. J Polym Sci 第 A 部分：Polym Chem，2011
A series of fluorine-containing amphiphilic diblock copolymers comprising hydrophobic poly(p-(2-(p-tolyloxy)perfluorocyclobutoxy)phenyl methacrylate) (PTPFCBPMA) and hydrophilic poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) segments were synthesized via successive reversible addition fragmentation chain transfer (RAFT) polymerizations. RAFT homopolymerization of p-(2-(p-tolyloxy)perfluorocyclobutoxy)phenyl methacrylate was first initiated by 2,2′-azobisisobutyronitrile using cumyl dithiobenzoate as chain transfer agent, and the results show that the procedure was conducted in a controlled way as confirmed by the fact that the number-average molecular weights increased linearly with the conversions of the monomer while the polydispersity indices kept below 1.30. Dithiobenzoate-capped PTPFCHPMA homopolymer was then used as macro-RAFT agent to mediate RAFT polymerization of 2-(diethylamino)ethyl methacrylate, which afforded PTPFCBPMA-b-PDEAEMA amphiphilic diblock copolymers with different block lengths and narrow molecular weight distributions (Mw/Mn ≤ 1.28). The critical micelle concentrations of the obtained amphiphilic diblock copolymers were determined by fluorescence spectroscopy technique using N-phenyl-1-naphthylamine as probe. The morphology and size of the formed micelles were investigated by transmission electron microscopy and dynamic light scattering, respectively. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011