Water-Soluble Multi-Walled Nanotube and its Film Characteristics
FENG Wei1, ZHOU Feng1, WANG Xiao-Gong1, WAN Mei-Xiang2, FUJII Akihiko3, YOSHINO Katsumi3
1Institute of Polymer Science and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084
2Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
3Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
Water-Soluble Multi-Walled Nanotube and its Film Characteristics
1Institute of Polymer Science and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084
2Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
3Department of Electronic Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
Abstract： Covalent modification of multi-walled-nanotube (MWNT) surface enhanced solubility in water yields a thin transparent shining dark-colored film of soluble MWNT (s-MWNT) with a conductivity of 1.25 S/cm. Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV-vis absorption spectroscopy were used for the film characterization. The result shows that enhanced interactions between s-MWNT and water and between s-MWNTs play an important role in the increase of the solubility of the nanotubes in water and in the formation of uniform thin films.
2003, Vol. 20 
