棒状-线团型聚亚乙基亚胺-聚乙二醇-α-环糊精包合物自组装为中空球体和棒状颗粒。
Self-assembly of rod-coil polyethylenimine-poly(ethylene glycol)-α-cyclodextrin inclusion complexes into hollow spheres and rod-like particles.
机构信息
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
出版信息
Macromol Rapid Commun. 2011 Dec 15;32(24):1965-71. doi: 10.1002/marc.201100514. Epub 2011 Oct 18.
This paper describes the self-assembly of rod-coil inclusion complexes, polyethylenimine-poly(ethylene glycol)-α-cyclodextrin (PEI-PEG-α-CD). It is demonstrated that α-CDs should exclusively thread on the PEG block in PEI-PEG copolymers and the resulting complexes have both rigid block (PEG-α-CD) and coil block (protonated PEI). By varying the rigid block fraction, aggregates with hollow spheres or rod-like particles could be formed simply by self-assembly in aqueous solution.
本文描述了棒-环包合物的自组装，即聚乙烯亚胺-聚（乙二醇）-α-环糊精（PEI-PEG-α-CD）。实验证明，α-CD 应该只在 PEI-PEG 共聚物的 PEG 嵌段上缠绕，得到的复合物既有刚性嵌段（PEG-α-CD）又有螺旋嵌段（质子化的 PEI）。通过改变刚性嵌段的分数，可以在水溶液中简单地通过自组装形成具有中空球体或棒状颗粒的聚集物。
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