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Advanced Materials

Light and pH Cooperative Nanofluidic Diode Using a Spiropyran-Functionalized Single Nanochannel

Authors

  • Minghui Zhang,

    1. Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of the Ministry of Education, School of Chemistry and the Environment, Beihang University, Beijing 100191, P. R. of China
    Current affiliation:
    1. M.H.Z and X.H. contribute equally to this work.
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  • Xu Hou,

    1. National Center for Nanoscience and Technology, No. 11, Beiyitiao Zhongguancun, Beijing 100190, P. R. of China
    Current affiliation:
    1. M.H.Z and X.H. contribute equally to this work.
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  • Jingtao Wang,

    1. Sino-French Engineer School, Beihang University, Beijing 100191, P. R. of China
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  • Ye Tian,

    1. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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  • Xia Fan,

    1. Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of the Ministry of Education, School of Chemistry and the Environment, Beihang University, Beijing 100191, P. R. of China
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  • Jin Zhai,

    Corresponding author
    1. Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of the Ministry of Education, School of Chemistry and the Environment, Beihang University, Beijing 100191, P. R. of China
    • Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of the Ministry of Education, School of Chemistry and the Environment, Beihang University, Beijing 100191, P. R. of China.
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  • Lei Jiang

    1. Key Laboratory of Bio-Inspired Smart Interfacial, Science and Technology of the Ministry of Education, School of Chemistry and the Environment, Beihang University, Beijing 100191, P. R. of China
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. of China
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Abstract

An artificial nanofluidic diode system is prepared (see figure), mimicking the light-gated and pH-tunable ion channels that play an important role in life sciences. When UV light is off, the nanochannel is in the closed state, analogous to a resistance. Under UV light irradiation and at pH 7, the current flows from the tip to the base, analogous to a diode; at pH 3, the situation (and the diode) is reversed.

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