期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 46, 页码 13664-13668出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201505269
关键词
carbonate ions; nanofluidic diodes; tunability; wettabilty
资金
- National Research Fund for Fundamental Key Projects [2011CB935703]
- National Natural Science Foundation [21171171, 21434003, 91427303, 21201170, 91127025, 21421061]
- Key Research Program of Chinese Academy of Sciences [KJZD-EW-M01, KJZD-EW-M03]
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.
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