Metal–Organic Framework Membrane Nanopores as Biomimetic Photoresponsive Ion Channels and Photodriven Ion Pumps
| Autor: | Jiahao Lu, Yifei Xue, Jun Gao, Wenjie Ma, Nannan Liu, Yanan Jiang, Ping Yu, Fei Wu, Yujuan Qiao, Lei Jiang, Lanqun Mao |
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| Přispěvatelé: | Physics of Complex Fluids |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Porphyrins Light Schottky barrier nanopores Metal Nanoparticles Nanotechnology 010402 general chemistry 01 natural sciences Catalysis Ion Channels Ion Artificial photosynthesis ion transport metal–organic frameworks Biomimetic Materials Ion channel Ion transporter Metal-Organic Frameworks Platinum 010405 organic chemistry photodriven ion pumps General Medicine General Chemistry n/a OA procedure 0104 chemical sciences Nanopore Membrane Ion pump membranes |
| Zdroj: | Angewandte Chemie-International Edition, 59(31), 12795-12799. Wiley |
| ISSN: | 1433-7851 |
| Popis: | Biological ion channels and ion pumps with sub-nanometer sizes modulate ion transport in response to external stimuli. Realizing such functions with sub-nanometer solid-state nanopores has been an important topic with wide practical applications. Herein, we demonstrate a biomimetic photoresponsive ion channel and photodriven ion pump using a porphyrin-based metal-organic framework membrane with pore sizes comparable to hydrated ions. We show that the molecular-size pores enable precise and robust optoelectronic ion transport modulation in a broad range of concentrations, unparalleled with conventional solid-state nanopores. Upon decoration with platinum nanoparticles to form a Schottky barrier photodiode, photovoltage across the membrane is generated with "uphill" ion transport from low concentration to high concentration. These results may spark applications in energy conversion, ion sieving, and artificial photosynthesis. |
| Databáze: | OpenAIRE |
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