A bioinspired switchable and tunable carbonate-activated nanofluidic diode based on a single nanochannel

Ganhua Xie, Kai Xiao, Zhen Zhang, Xiang-Yu Kong, Qian Liu, Pei Li, Liping Wen, Lei Jiang

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50 Citations (Scopus)

Abstract

A smart nanofluidic diode that exhibits both ion gating and ion current rectification has been developed using a 1-(4-amino-phenyl)-2,2,2-trifluoro-ethanone-functionalized, conical nanochannel in a polyimide (PI) membrane. The switch-like property can be tuned by controlling the wettability and charge distribution with carbonate ions. Such a nanodevice is advantageous for precisely controlling conductive states with an ultrahigh gating ratio of up to 5000, and a high rectification ratio of 27. By virtue of the high selectivity and sensitivity for carbonate ions, this nanofluidic diode may find applications in carbonate or carbon dioxide detection.

Original languageEnglish
Pages (from-to)13664-13668
Number of pages5
JournalAngewandte Chemie - International Edition
Volume54
Issue number46
DOIs
Publication statusPublished - 9 Nov 2015
Externally publishedYes

Keywords

  • carbonate ions
  • nanofluidic diodes
  • tunability
  • wettabilty

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