Self-assembly of rod-coil block copolymers on carbon nanotubes: A route toward diverse surface nanostructures
Self-assembly of rod-coil block copolymers on carbon nanotubes: A route toward diverse surface nanostructures
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碳纳米管上棒-线圈嵌段共聚物的自组装：通往多样化表面纳米结构的途径
DOI：
10.1002/marc.201800080
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发表时间：
2018
影响因子：
4.6
通讯作者：
Rui Hu
中科院分区：
文献类型：
--
作者：
Yang Han;Chunhua Cai;Jiaping Lin;Shuting Gong;Wenheng Xu;Rui Hu
本文报道了聚谷氨酸苄酯-嵌段-聚乙二醇（PBLG-B-PEG）棒-卷嵌段共聚物（BCP）在溶液中分散碳纳米管（CNTs），并通过溶液自组装在CNTs上形成各种表面纳米结构。在溶解BCP的有机溶剂中，PBLG棒块吸附在CNT表面上，BCP形成保形涂层。然后，通过引入水（PEG嵌段的选择性溶剂），涂层中的BCP进一步自组装成各种表面纳米结构，如螺旋（左手或右手），陀螺，球体和环。表面纳米结构的形态可以通过初始有机溶剂组合物、制备温度、BCP与CNT的进料比、PBLG嵌段的聚合度和CNT的直径来定制。
In this work, it is reported that poly(γ‐benzyl‐l‐glutamate)‐block‐poly(ethylene glycol) (PBLG‐b‐PEG) rod‐coil block copolymers (BCPs) can disperse carbon nanotubes (CNTs) in solution and form various surface nanostructures on the CNTs via solution self‐assembly. In an organic solvent that dissolves the BCPs, the PBLG rod blocks adsorb on CNT surfaces, and the BCPs form conformal coatings. Then, by the introduction of water, a selective solvent for PEG blocks, the BCPs in the coatings further self‐assemble into diverse surface nanostructures, such as helices (left‐handed or right‐handed), gyros, spheres, and rings. The morphology of the surface nanostructure can be tailored by initial organic solvent composition, preparation temperature, feeding ratio of BCPs to CNTs, degree of polymerization of PBLG blocks, and diameter of the CNTs.