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Cheng-Yong Li, Feng-Xiang Ma, Zeng-Qiang Wu, Hong-Li Gao, Wen-Ting Shao, Kang Wang and Xing-Hua Xia Solution-pH-Modulated Rectification of Ionic Current in Highly Ordered Nanochannel Arrays Patterned with Chemical Functional Groups at Designed Positions Advanced Functional Materials 23

Version of Record online: 4 APR 2013 | DOI: 10.1002/adfm.201300315

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A new ionic current rectification device responsive to a broad range of pH stimuli is established using highly ordered nanochannels of porous anodic alumina membrane with abrupt surface charge discontinuity. Due to the protonation/deprotonation of the patterned amine and the remaining intrinsic hydroxyl groups, the nanochannel-array-based device is able to regulate ion transport selectivity and has ionic current rectification properties.

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