Preparation of semiconductor-enriched single-walled carbon nanotube dispersion using a neutral pH water soluble chitosan derivative

作者：Najeeb Choolakadavil Khalid; Chang Jingbo; Lee Jae Hyeok; Lee Minsu; Kim Jae Ho^*

来源：Journal of Colloid and Interface Science, 2011, 354(2): 461-466.

DOI：10.1016/j.jcis.2010.10.064

• Single-walled carbon nanotubes
• Debundling
• Semiconducting nanotubes
• Individual dispersion
• Chitosan derivative
• Biocompatible

Debundling and selective dispersion of semiconducting single-walled carbon nanotubes (SWNTs) has been demonstrated using a neutral pH water soluble chitosan derivative, N-acetylated chitosan (NACHI), which is synthesized by controlled N-acetylation of chitosan using acetic anhydride. The SWNT-NACHI supernatant solution demonstrated semiconductor-enriched property owing to the preferential adsorption of N-groups of the NACHI on semiconducting nanotubes with a fairly weak charge transfer. The dispersion of nearly individualized SWNTs achieved by surface modification of nanotubes with a biocompatible polymer can be utilized for electronic and biomedical applications such as field effect transistor, biosensor, cell culture medium and SWNT-biomacromolecule hybrid materials.

• 出版日期2011-2-15