Skip to main content
padlock icon - secure page this page is secure

Single-Wall Carbon Nanotube Dispersions Stabilised with N-Trimethyl-Chitosan

Buy Article:

Your trusted access to this article has expired.

$105.00 + tax (Refund Policy)

We report the noncovalent complexation of a biocompatible low substituted N-trimethyl chitosan (TMC), a cationic chitosan derivative, onto the graphitic surface of single-walled carbon nanotubes (SWCNTs). TMC was synthesized and characterized by 1H-NMR. A yield between the range of 34% and 56% was obtained with a degree of substitution of 19.7%. SWCNTs dispersed in TMC resulted in stable dispersions, which were further characterized by Atomic Force Microscopy (AFM) Raman Spectroscopy and -potential. AFM and Raman spectroscopy studies confirmed that smaller diameter SWCNTs are preferentially dispersed by TMC molecules resulting in stable dispersions. In addition TMC coated CNTs have a high -potential over a wide range of pH (2–12) exceeding values from 35 mV (pH 2) up to 10 mV (pH 12) respectively. The presence of TMC induces electrostatic repulsions which stabilize the CNTs against van der Waals attractions resulting in stable dispersions. Such complexes may have potential applications in nanomedicine.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: ATOMIC FORCE MICROSCOPY (AFM); N-TRIMETHYL CHITOSAN; NANOTECHNOLOGY; RAMAN SPECTROSCOPY; SINGLE-WALL CARBON NANOTUBES (SWCNTS)

Document Type: Research Article

Publication date: 01 March 2008

More about this publication?
  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more