A bio-inspired, sensitive, and selective ionic gate driven by silver (I) ions

Loujun Gao; Pei Li; Yuqi Zhang; Kai Xiao; Jie Ma; Ganhua Xie; Guanglei Hou; Zhen Zhang; Liping Wen; Lei Jiang

doi:10.1002/smll.201400658

A bio-inspired, sensitive, and selective ionic gate driven by silver (I) ions

Small. 2015 Feb 4;11(5):543-7. doi: 10.1002/smll.201400658. Epub 2014 Sep 10.

Authors

Loujun Gao¹, Pei Li, Yuqi Zhang, Kai Xiao, Jie Ma, Ganhua Xie, Guanglei Hou, Zhen Zhang, Liping Wen, Lei Jiang

Affiliation

¹ College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi Province, 716000, PR China.

PMID: 25207841
DOI: 10.1002/smll.201400658

Abstract

By grafting specific response DNA on the interior surface of ion track-etched conical nanochannels, a highly sensitive and selective ionic gate that can be driven by silver (I) ions is demonstrated. The switches between the OFF-state and the ON-state are mainly dependent on silver (I) ions and cysteine. Such a biomimetic nanodevice shows potential for application in sensing, pharmaceuticals, and sterilization.

Keywords: gating; ionic gates; nanochannels; silver ions.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomimetics / methods*
Electricity
Gold / chemistry
Ion Transport
Ions
Metal Nanoparticles / chemistry
Silver / chemistry*

Substances

Ions
Silver
Gold