title: The preparation of highly water-soluble multi-walled carbon nanotubes by irreversible noncovalent functionalization with a pyrene-carrying polymer.
abstract: Multi-walled carbon nanotubes (MWNTs) have been solubilized in water via a noncovalent method of exfoliation and centrifugation cycles with the assistance of hydrolyzed poly(styrene-co-maleic anhydride) carrying pyrene (HPSMAP). After the obtained solution was micro-filtered and dried, a water-soluble complex of HPSMAP-MWNTs was obtained. The solubility of HPSMAP-MWNTs was measured to be 46.2 mg ml(-1) with a net MWNT concentration of 7.4 mg ml(-1) in water. Thermal gravimetric analyses showed that there was a large amount of polymer remaining on the surface of MWNTs irreversibly after thoroughly removing the free polymer. Other characterizations using transmission electron microscopy, Fourier transform infrared (FTIR) spectroscopy, fluorescence spectra, and fluorescence decay were conducted.
authors: Department of Polymer Science and Engineering, State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China. Key Laboratory of Macromolecule Synthesis and Functionalization (Zhejiang University), Ministry of Education, Hangzhou 310027, People's Republic of China.
authors: Chao-Hua
authors: CH
authors: Xue
authors: Ren-Jia
authors: RJ
authors: Zhou
authors: Min-Min
authors: MM
authors: Shi
authors: Yan
authors: Y
authors: Gao
authors: Gang
authors: G
authors: Wu
authors: Xiao-Bin
authors: XB
authors: Zhang
authors: Hong-Zheng
authors: HZ
authors: Chen
authors: Mang
authors: M
authors: Wang