Defibrillation of Soft Porous Metal-Organic Frameworks with Electric Fields | Sciact - CRIS-system of Boreskov Institute of Catalysis

Defibrillation of Soft Porous Metal-Organic Frameworks with Electric Fields Full article

Journal

Science
ISSN: 0036-8075 , E-ISSN: 1095-9203

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

Knebel A. ¹ , Geppert B. ¹ , Volgmann K. ¹ , Kolokolov D.I. ^2,3 , Stepanov A.G. ^2,3 , Twiefel J. ⁴ , Heitjans P. ¹ , Volkmer D. ⁵ , Caro J. ¹

Affiliations

1	Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, 30167 Hannover, Germany
2	Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630090, Russia
3	Novosibirsk State University, Novosibirsk 630090, Russia
4	Institute for Dynamic and Vibration Research, Leibniz University Hannover, 30167 Hannover, Germany
5	Institute of Physics, Chair of Solid State and Materials Chemistry, Augsburg University, 86135 Augsburg, Germany

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

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.

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

Full text from publisher

Submitted:	Nov 1, 2016
Accepted:	Sep 19, 2017
Published online:	Oct 19, 2017
Published print:	Oct 20, 2017

Web of science:	WOS:000413251000038
Scopus:	2-s2.0-85032496887
Elibrary:	31059217
Chemical Abstracts:	2017:1664118
PMID:	29051376
OpenAlex:	W2765446679

DB	Citing
Web of science	372
Scopus	376
Elibrary	373
OpenAlex	445