Zhang Qi, Zhu Shiping
Department of Chemical Engineering, McMaster University, Hamilton, Ontario Canada L8S 4L7.
ACS Macro Lett. 2015 Jul 21;4(7):755-758. doi: 10.1021/acsmacrolett.5b00360. Epub 2015 Jul 2.
This work reports the development of a new polymerization-induced self-assembly (PISA) system through reversible addition-fragmentation chain transfer (RAFT)-mediated dispersion polymerization in ionic liquids. Three representative monomers (styrene, -butyl methacrylate, and 2-hydroxyethyl methacrylate) were polymerized through chain extension from a trithiocarbonate-terminated poly(ethylene glycol) (PEG) macro-RAFT agent, in a model ionic liquid [bmim][PF]. The block copolymers thus prepared could spontaneously form aggregates with vesicular morphologies. Moreover, by regulating the formulation, nanoaggregates with multiple morphologies were generated in ionic liquid via PISA.
本工作报道了一种通过离子液体中可逆加成-断裂链转移（RAFT）介导的分散聚合开发新型聚合诱导自组装（PISA）体系的方法。三种代表性单体（苯乙烯、甲基丙烯酸丁酯和甲基丙烯酸2-羟乙酯）通过从三硫代碳酸酯封端的聚乙二醇（PEG）大分子RAFT试剂进行链增长聚合，反应在模型离子液体[bmim][PF]中进行。由此制备的嵌段共聚物可自发形成具有囊泡形态的聚集体。此外，通过调节配方，通过PISA在离子液体中生成了具有多种形态的纳米聚集体。
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