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.
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收藏
页码：9669 / 9676
页数：8
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