Defibrillation of Soft Porous Metal-Organic Frameworks with Electric Fields Full article
Journal |
Science
ISSN: 0036-8075 , E-ISSN: 1095-9203 |
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Output data | Year: 2017, Volume: 358, Number: 6361, Pages: 347-351 Pages count : 5 DOI: 10.1126/science.aal2456 | ||||||||||
Tags | MIXED MATRIX MEMBRANES; ZIF-8; FLEXIBILITY; SELECTIVITY; CRYSTALS; MOBILITY; LINKERS; RING | ||||||||||
Authors |
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Affiliations |
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Funding (4)
1 | Federal Agency for Scientific Organizations | 0303-2016-0003 |
2 | Russian Science Foundation | 17-73-10135 |
3 | German Research Foundation | CA 147/20-1 |
4 | German Research Foundation | VO 829/12-1 |
Abstract:
Gas transport through metal-organic framework membranes (MOFs) was switched in situ by applying an external electric field (E-field). The switching of gas permeation upon E-field polarization could be explained by the structural transformation of the zeolitic imidazolate framework ZIF-8 into polymorphs with more rigid lattices. Permeation measurements under a direct-current E-field poling of 500 volts per millimeter showed reversibly controlled switching of the ZIF-8 into polar polymorphs, which was confirmed by x-ray diffraction and ab initio calculations. The stiffening of the lattice causes a reduction in gas transport through the membrane and sharpens the molecular sieving capability. Dielectric spectroscopy, polarization, and deuterium nuclear magnetic resonance studies revealed low-frequency resonances of ZIF-8 that we attribute to lattice flexibility and linker movement. Upon E-field polarization, we observed a defibrillation of the different lattice motions.
Cite:
Knebel A.
, Geppert B.
, Volgmann K.
, Kolokolov D.I.
, Stepanov A.G.
, Twiefel J.
, Heitjans P.
, Volkmer D.
, Caro J.
Defibrillation of Soft Porous Metal-Organic Frameworks with Electric Fields
Science. 2017. V.358. N6361. P.347-351. DOI: 10.1126/science.aal2456 WOS Scopus РИНЦ AN PMID OpenAlex
Defibrillation of Soft Porous Metal-Organic Frameworks with Electric Fields
Science. 2017. V.358. N6361. P.347-351. DOI: 10.1126/science.aal2456 WOS Scopus РИНЦ AN PMID OpenAlex
Files:
Full text from publisher
Dates:
Submitted: | Nov 1, 2016 |
Accepted: | Sep 19, 2017 |
Published online: | Oct 19, 2017 |
Published print: | Oct 20, 2017 |
Identifiers:
Web of science: | WOS:000413251000038 |
Scopus: | 2-s2.0-85032496887 |
Elibrary: | 31059217 |
Chemical Abstracts: | 2017:1664118 |
PMID: | 29051376 |
OpenAlex: | W2765446679 |