Affordable Access

deepdyve-link
Publisher Website

Single-step electrochemical functionalization of double-walled carbon nanotube (DWCNT) membranes and the demonstration of ionic rectification.

Authors
  • Zhan, Xin1
  • Wu, Ji
  • Chen, Zhiqiang
  • Hinds, Bruce J
  • 1 Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA. [email protected]
Type
Published Article
Journal
Nanoscale Research Letters
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Jun 10, 2013
Volume
8
Issue
1
Pages
279–279
Identifiers
DOI: 10.1186/1556-276X-8-279
PMID: 23758999
Source
Medline
License
Unknown

Abstract

Carbon nanotube (CNT) membranes allow the mimicking of natural ion channels for applications in drug delivery and chemical separation. Double-walled carbon nanotube membranes were simply functionalized with dye in a single step instead of the previous two-step functionalization. Non-faradic electrochemical impedance spectra indicated that the functionalized gatekeeper by single-step modification can be actuated to mimic the protein channel under bias. This functional chemistry was proven by a highly efficient ion rectification, wherein the highest experimental rectification factor of ferricyanide was up to 14.4. One-step functionalization by electrooxidation of amine provides a simple and promising functionalization chemistry for the application of CNT membranes.

Report this publication

Statistics

Seen <100 times