title: Preparation of semiconductor-enriched single-walled carbon nanotube dispersion using a neutral pH water soluble chitosan derivative.
abstract: 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.
authors.affiliation: Department of Molecular Science and Technology, Ajou University, Gyeonggi-do, Suwon 443-749, Republic of Korea.
authors.forename: Choolakadavil Khalid
authors.initials: CK
authors.lastname: Najeeb
authors.forename: Jingbo
authors.initials: J
authors.lastname: Chang
authors.forename: Jae-Hyeok
authors.initials: JH
authors.lastname: Lee
authors.forename: Minsu
authors.initials: M
authors.lastname: Lee
authors.forename: Jae-Ho
authors.initials: JH
authors.lastname: Kim