Volume 62, Issue 21 e202302997
Research Article

Highly-Efficient Ion Gating through Self-Assembled Two-Dimensional Photothermal Metal-Organic Framework Membrane

Yuming Zhou

Yuming Zhou

College of Chemistry, Beijing Normal University, Beijing, 100875 China

Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074 China

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Tianyi Xiong

Tianyi Xiong

Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Jiahao Lu

Jiahao Lu

Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

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Prof. Ping Yu

Prof. Ping Yu

Beijing National Laboratory for Molecular Science, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Yanan Jiang

Corresponding Author

Dr. Yanan Jiang

College of Chemistry, Beijing Normal University, Beijing, 100875 China

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Prof. Fan Xia

Corresponding Author

Prof. Fan Xia

Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074 China

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Prof. Lanqun Mao

Corresponding Author

Prof. Lanqun Mao

College of Chemistry, Beijing Normal University, Beijing, 100875 China

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First published: 21 March 2023
Citations: 18

Graphical Abstract

A self-assembled 2D metal-organic framework (MOF) membrane is shown to be an excellent nanofluidic platform for the smart regulation of transverse ion transport. It exhibits extremely high ion gating ratios (up to 104) due to its good photothermal performance. This approach may lead to applications of MOF membranes which have a variety of stimuli responsive properties in ion sieving, biosensing, and energy conversion.

Abstract

Biological ion channels regulate the ion flow across cell membrane via opening or closing of the pores in response to various external stimuli. Replicating the function of high ion gating effects with artificial porous materials has been challenging. Herein, we report that the self-assembled two-dimensional metal-organic framework (MOF) membrane can serve as an excellent nanofluidic platform for smart regulation of ion transport. The MOF membrane with good photothermal performance exhibits extremely high ion gating ratio (up to 104), which is among the highest values in MOF membrane nanochannels for light-controlled ion gating reported so far. By repeatedly turning on and off the light, the nanofluidic device shows outstanding stability and reversibility that can be applied in the remote light-switching system. This work may spark promising applications of MOF membrane with variety of stimuli responsive properties in ion sieving, biosensing, and energy conversion.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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