期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 39, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201800080
关键词
aqueous dispersion; carbon nanotube; rod-coil block copolymer; self-assembly; surface nanostructure
资金
- National Natural Science Foundation of China [51573049, 21474029]
- Project of Shanghai Municipality [15QA1401400]
- Fundamental Research Funds for the Central Universities [222201717021]
In this work, it is reported that poly(-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.
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