Stimuli-Responsive Bicomponent Polymer Janus Particles by "Grafting from"/"Grafting to" Approaches

被引：176

作者：

Berger, Sebastian ^{[1
]}

Synytska, Alla ^{[1
]}

Ionov, Leonid ^{[2
]}

Eichhorn, Klaus-Jochen ^{[1
]}

Stamm, Manfred ^{[1
]}

机构：

[1] Leibniz Inst Polymer Res Dresden eV, D-01069 Dresden, Germany

[2] Max Planck Inst Mol Cell Biol & Genet, D-01307 Dresden, Germany

来源：

MACROMOLECULES | 2008年 / 41卷 / 24期

关键词：

D O I：

10.1021/ma802089h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report preparation Of stimuli-responsive bicomponent polymeric Janus particles and investigation of their switching behavior. The first polymer was immobilized on one side of silica particles using the surface-initiated atom transfer radical polymerization, "grafting from" approach. The second polymer was immobilized using the "grafting to" method by reaction between reactive terminating groups of polymer chains and functional groups on the particle Surface. On the example of mixed oppositely charged polyelectrolyte Janus particles decorated with poly(acrylic acid) and poly(2-vinylpyridine) chains, we demonstrate stimuli-responsive aggregation/disaggregation behavior upon pH changes.

引用

页码：9669 / 9676

页数：8

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