Increased Solubility, Liquid-Crystalline Phase, and Selective Functionalization of Single-Walled Carbon Nanotube Polyelectrolyte Dispersions

• DOI: 10.1021/nn4011544
• Publication Date: 2013-04-16T13:10:38Z
• Authors: Chengmin Jiang; Avishek Saha; Changsheng Xiang; Colin C. Young; James M. Tour; Matteo Pasquali; Angel A. Martí
• Keywords: Surface Modification; Chemical modification

The solubility of single-walled carbon nanotube (SWCNT) polyelectrolytes [K(THF)]nSWCNT in dimethyl sulfoxide (DMSO) was determined by a combination centrifugation, UV-vis spectral properties, and solution extraction. SWCNT formed liquid crystal at concentration above 3.8 mg/mL. Also, crown ether 18-crown-6 found to increase the DMSO. Raman spectroscopy near-infrared (NIR) fluorescence analyses were applied study functionalization SWCNTs. Small-diameter SWCNTs be preferentially functionalized when dispersed