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由多组分刷状共聚物制备的结构明确的有机纳米管。

Well-defined organic nanotubes from multicomponent bottlebrush copolymers.

作者信息

Huang Kun, Rzayev Javid

机构信息

Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA.

出版信息

J Am Chem Soc. 2009 May 20;131(19):6880-5. doi: 10.1021/ja901936g.

Abstract

Bottlebrush copolymers are comblike macromolecules with densely grafted polymeric branches that adopt a cylindrical shape in solutions. We demonstrate a new method for the preparation of organic nanotubes by single molecule templating of core-shell bottlebrush copolymers. Multicomponent bottlebrush copolymers with well-defined structural parameters are synthesized by a combination of different living polymerization methods. Tubular structures can be prepared by cross-linking the shell layer and selectively etching out the core. The shape and size of original bottlebrush macromolecules are preserved during these transformations, which leads to the formation of well-defined organic nanotubes. The length and diameter of nanotubes are dictated by the length of the backbones and branches of the polymeric precursors, respectively. Water-soluble nanotubes with a hydrophobic interior can be prepared from bottlebrush copolymers with triblock copolymer branches. Herein, we outline molecular design strategies to fabricate nanotubes with controlled lengths, open pores, and different solubility characteristics.

摘要

瓶刷状共聚物是一种梳状大分子,具有密集接枝的聚合物支链,在溶液中呈圆柱形。我们展示了一种通过核壳瓶刷状共聚物的单分子模板法制备有机纳米管的新方法。通过不同活性聚合方法的组合合成了具有明确结构参数的多组分瓶刷状共聚物。通过交联壳层并选择性蚀刻掉核,可以制备管状结构。在这些转变过程中,原始瓶刷状大分子的形状和尺寸得以保留,这导致形成明确的有机纳米管。纳米管的长度和直径分别由聚合物前体的主链和支链的长度决定。具有疏水内部的水溶性纳米管可以由具有三嵌段共聚物支链的瓶刷状共聚物制备。在此,我们概述了制备具有可控长度、开孔和不同溶解特性的纳米管的分子设计策略。

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