A Light-Responsive Metal-Organic Framework Hybrid Membrane with High On/Off Photoswitchable Proton Conductivity.
Angew Chem Int Ed Engl
; 59(20): 7732-7737, 2020 May 11.
Article
en En
| MEDLINE
| ID: mdl-32090427
ABSTRACT
Mimicking biological proton pumps to achieve stimuli-responsive protonic solids has long been of great interest for their diverse applications in fuel cells, chemical sensors, and bio-electronic devices. Now, dynamic light-responsive metal-organic framework hybrid membranes can be obtained by inâ
situ encapsulation of photoactive molecules (sulfonated spiropyran, SSP), as the molecular valve, into the cavities of the host ZIF-8. The configuration of SSP can be changed and switched reversibly in response to light, generating different mobile acidic protons and thus high on/off photoswitchable proton conductivity in the hybrid membranes and device. This device exhibits a high proton conductivity, fast response time, and extremely large on/off ratio upon visible-light irradiation. This approach might provide a platform for creating emerging smart protonic solids with potential applications in the remote-controllable chemical sensors or proton-conducting field-effect transistors.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos