Self-assembly of amphiphilic random co-poly(ionic liquid)s: the effect of anions, molecular weight, and molecular weight distribution

被引:57
作者
Guo, Jiangna [1 ]
Zhou, Yinxia [1 ]
Qiu, Lihua [1 ]
Yuan, Chao [1 ]
Yan, Feng [1 ]
机构
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Dept Polymer Sci & Engn, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Suzhou 215123, Peoples R China
关键词
POLYMERIZED IONIC LIQUIDS; DIBLOCK COPOLYMERS; BLOCK-COPOLYMERS; MULTIPLE MORPHOLOGIES; AQUEOUS-SOLUTIONS; EXCHANGE; NANOPARTICLES; MICELLES; VESICLES; ACID);
D O I
10.1039/c3py00460k
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Self-assembly behavior of amphiphilic random co-poly(ionic liquid)s in aqueous solution was investigated in this work. An imidazolium-type homopolymer, poly(1-(4-vinylbenzyl)-3-methyl imidazolium chloride) (denoted as PIL-[Cl]),was synthesized via reversible addition fragmentation chain transfer (RAFT) polymerization of p-chloromethyl styrene, and followed by post-polymerization with methylimidazole (or vinylimidazole). Partial anion-exchange of PIL-[Cl] with PF6- anions yielded amphiphilic random copolymers, PIL-[Cl](x)[PF6](y) (suffixes x, y represent the relative molar ratio of Cl- and PF6- anions). Self-assembly morphologies of PIL-[Cl](x)[PF6](y) in aqueous solution as a function of copolymer composition (anions), molecular weight, and molecular weight distribution were investigated. The size of well-defined PIL-[Cl](x)[PF6](y) spherical micelles increased dramatically with increasing molecular weight distribution, while the anions and molecular weight show little effect on the micelle size. Furthermore, self-assembly of amphiphilic random ionic copolymers with the vinylimidazole groups yielded colloidosomes, which might be due to the polymerization of vinylimidazole groups.
引用
收藏
页码:4004 / 4009
页数:6
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