Shanghai Key Laboratory of Advanced Polymeric Materials, State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.
Macromol Rapid Commun. 2018 May;39(10):e1800080. doi: 10.1002/marc.201800080. Epub 2018 Apr 14.
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.
在这项工作中，报道了聚（γ-苄基-L-谷氨酸酯）-嵌段-聚（乙二醇）（PBLG-b-PEG）棒-胶束嵌段共聚物（BCPs）可以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 BCPs 的有机溶剂中，PBLG 棒段吸附在 CNT 表面上，BCPs 形成共形涂层。然后，通过引入水，即 PEG 段的选择性溶剂，涂层中的 BCPs 进一步自组装成各种表面纳米结构，如螺旋（左旋或右旋）、陀螺仪、球体和环。表面纳米结构的形态可以通过初始有机溶剂组成、制备温度、BCPs 与 CNTs 的进料比、PBLG 段的聚合度和 CNTs 的直径来调节。
