Diameter-selective dispersion of single-walled carbon nanotubes using a water-soluble, biocompatible polymer

Abstract

One-step diameter-selective dispersion of HiPco single-walled carbon nanotubes has been accomplished through noncovalent complexation of the nanotubes with a water-soluble, biocompatible polymer chitosan at room temperature.

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

“…However chitosan has been used for various functional materials, including biomaterials, its applications are limited because of insolubility in water, it can only be dissolved in acidic medium [31,32]. The chitosan has demonstrated capability for dispersing SWNTs in acidic medium and it also has shown tendency to preferentially disperse smaller diameter nanotubes [33,34] individual or thin bundles of semiconductor-enriched SWNTs using a neutral pH water soluble chitosan derivative, N-acetylated chitosan (NACHI), which is synthesized by a simple functionalization process reported in literature [31]. The lone pair of electrons on the electron rich N-groups such as amine and amide groups of NACHI plays a vital role in the isolation of SWNTs into thinner bundle or individual tubes as well as selective dispersion of semiconducting nanotubes [24,36].…”

Selective and sensitive molecularly imprinted sol–gel film-based electrochemical sensor combining mercaptoacetic acid-modified PbS nanoparticles with Fe3O4@Au–multi-walled carbon nanotubes–chitosan

“…CTS-dispersed Fe 3 O 4 @Au-MWNTs were prepared by the method similar to that described by Yang et al [25] and Jiang et al [22]. In short, 0.5 wt.% of CTS solution was first prepared by dissolving CTS power in 1% (v/v) acetic acid solution with stirring for 1 h at room temperature until completely dispersed.…”

Carbon‐Nanotube Biofibers

“…[35,36] It is interesting to note that the biomolecules alter the RBM features to differing degrees, indicating a different interaction mode for each biomolecule and/or SWNT diameter selection. [37] Characterization of the fibers using field-emission scanning electron microscopy (FESEM) shows remarkable differences in the surface morphology of each fiber (Fig. 3).…”