Novel Amphiphilic Multiarm, Starlike Coil鈥揜od Diblock Copolymers via a Combination of Click Chemistry with Living Polymerization

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• 作者：Xinchang Pang ; Lei Zhao ; Chaowei Feng ; Zhiqun Lin
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：September 27, 2011
• 年：2011
• 卷：44
• 期：18
• 页码：7176-7183
• 全文大小：886K
• 年卷期：v.44,no.18(September 27, 2011)
• ISSN：1520-5835

文摘

A series of novel amphiphilic 21-arm, starlike diblock copolymers, poly(acrylic acid)-b-poly(3-hexylthiophene) (PAA-b-P3HT), based on 尾-cyclodextrin (尾-CD) with well-defined molecular architectures and ratio of two chemically distinct blocks were prepared, for the first time, via a combination of quasi-living Grignard metathesis method (GRIM), click reaction, and atom transfer radical polymerization (ATRP). The starlike PAA-b-P3HT diblock copolymers consist of hydrophilic coil-like PAA cores and hydrophobic rodlike P3HT shells with narrow molecular weight distribution and well-defined molecular weight of each block. Owing to the compact structure, the amphiphilic starlike PAA-b-P3HT formed a unimolecular micelle. Emulsion based on these novel amphiphilic starlike, coil鈥搑od diblock copolymers were readily produced by cross-linking hydrophilic coil-like PAA cores with a bifunctional cross-linker, ethylenediamine.