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Voltage-Mediated Water Dynamics Enables On-Demand Transport of Sugar Molecules in Two-Dimensional Channels |
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| Authors: | Shanyi Zhu Dr Xiaoli Zhao Yayun Shi Yuchen Wu Bowen Zhang Dr Congcong Liu Prof Zhenghui Pan Prof Zhijun Zuo Prof Xiaowei Yang |
| Institution: | 1. School of Materials Science and Engineering, Tongji University, Shanghai, 201804 P. R. China
These authors contributed equally to this work.;2. School of Materials Science and Engineering, Tongji University, Shanghai, 201804 P. R. China;3. State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024 P. R. China These authors contributed equally to this work.;4. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240 P. R. China;5. State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, 030024 P. R. China |
| Abstract: | The constructing of artificial channels with gating functions is an important undertaking for gaining insight into biological process and achieving efficient bionic functions. Typically, controllable transport within such channels relies on either electrostatic or specific interactions between the transporting species and the channel. However, for molecules with weak interactions with the channel, achieving precise gating of the transport remains a significant challenge. In this regard, this study proposes a voltage gating membrane of two-dimensional channels that selectively transport of neutral molecules glucose with a dimension of 0.60 nm. The permeation of glucose is switched on/off by electrochemically manipulating the water dynamics in the nanochannel. Voltage driven-intercalation of ion into the two-dimensional channel causes water to stratify and move closer to the channel walls, thereby resulting in the channel center being emptier for glucose diffusion. Due to the sub-nanometer size dimension of the channel, selective permeation of glucose over sucrose is also achieved in this approach. |
| Keywords: | 2D Channel Nanofluidics Smart Transport Voltage-Mediation Water Dynamics |