Premium
A Bioinspired Switchable and Tunable Carbonate‐Activated Nanofluidic Diode Based on a Single Nanochannel
Author(s) -
Xie Ganhua,
Xiao Kai,
Zhang Zhen,
Kong XiangYu,
Liu Qian,
Li Pei,
Wen Liping,
Jiang Lei
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201505269
Subject(s) - rectification , nanodevice , carbonate , diode , nanotechnology , ion , materials science , nanopore , gating , polyimide , nanofluidics , chemistry , optoelectronics , organic chemistry , voltage , layer (electronics) , physiology , physics , quantum mechanics , biology
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.