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.
Document Type
Article
Publication Date
6-10-2013
Digital Object Identifier (DOI)
http://dx.doi.org/10.1186/1556-276X-8-279
Repository Citation
Zhan, Xin; Wu, Ji; Chen, Zhiqiang; and Hinds, Bruce J., "Single-step electrochemical functionalization of double-walled carbon nanotube (DWCNT) membranes and the demonstration of ionic rectification" (2013). Chemistry Faculty Publications. 7.
https://uknowledge.uky.edu/chemistry_facpub/7
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1556-276x-8-279-s3.pdf (121 kB)
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1556-276x-8-279-s4.pdf (163 kB)
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Notes/Citation Information
Published in Nanoscale Research Letters, v. 8, no. 279.
© 2013 Zhan et al.; licensee Springer.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.