Ionic rectification by electrostatically actuated tethers on single walled carbon nanotube membranes

Ji Wu; Xin Zhan; Bruce J. Hinds

doi:10.1039/C2CC33355D

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Chemical Communications

Issue 64, 2012

Urgent high quality communications from across the chemical sciences.

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Ionic rectification by electrostatically actuated tethers on single walled carbon nanotube membranes

Ji Wu, Xin Zhan and Bruce J. Hinds

Chem. Commun., 2012,48, 7979-7981

DOI: 10.1039/C2CC33355D
Received 09 May 2012, Accepted 21 Jun 2012
First published online 22 Jun 2012

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Abstract
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Large electrostatically actuating charged tethers ( [similar] 2.5 nm) at the tip entrances of single walled carbon nanotubes (i.d. 1.5 nm) can dramatically enhance ionic gating at the CNT core entrance. Significant rectification of small ions at physiological ionic strengths is observed and this system closely mimics the function of protein channels.