Well-Defined Amphiphilic Poly(2-oxazoline) ABA-Triblock Copolymers and Their Aggregation Behavior in Aqueous Solution

被引：28

作者：

Krumm, Christian ^{[1
]}

Fik, Christoph P. ^{[1
]}

Meuris, Monika ^{[1
]}

Dropalla, Georg J. ^{[1
]}

Geltenpoth, Helma ^{[2
]}

Sickmann, Albert ^{[2
]}

Tiller, Joerg C. ^{[1
]}

机构：

[1] TU Dortmund, Dept Bio & Chem Engn, Chair Biomat & Polymer Sci, D-44227 Dortmund, Germany

[2] Leibniz Inst Analyt Wissensch ISAS eV, D-44227 Dortmund, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2012年 / 33卷 / 19期

关键词：

ABA-triblock copolymers; end groups; living polymerization; polymersomes; polyoxazoline; RING-OPENING POLYMERIZATION; VESICLES; 2-ETHYL-2-OXAZOLINE; NANOPARTICLES; INITIATORS; MICELLES;

D O I：

10.1002/marc.201200192

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-organization of block copolymers in solution is a way to obtain advanced functional superstructures. The synthesis of well-defined polymethyloxazoline-block-polyphenyloxazoline-block-polymethyloxazoline triblock copolymers is described and proven by 1H NMR spectroscopy, SEC, and ESIMS. The surprisingly water- soluble block copolymers do self-organize in aqueous solutions uniquely forming three coexisting well-defined structures: unimolecular micelles, micellar aggregates, and very form-stable polymersomes. This is the first example of a polymersome forming ABA-triblock copolymer with a glassy middle block. The spherical vesicles are analysed by scanning electron microscopy and transmission electron microscopy. It could be shown that these vesicles are indeed hollow spheres.

引用

页码：1677 / 1682

页数：6

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