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Elucidating the Structural Evolution of a Highy Porous Responsive Metal-Organic Framework (DUT-49(M)) upon Guests Desorption by Time-Resolved In-Situ Powder X-Ray Diffraction

preprint
revised on 06.08.2020 and posted on 06.08.2020 by Bikash Garai, Volodymyr Bon, Francesco Walenszus, Azat Khadiev, Dmitri Novikov, Stefan Kaskel
Variation in the metal centres of M-M paddle-wheel SBU results in the formation of isostructural DUT-49(M) frameworks. However, the porosity of the framework was found to be different for each of the structures. While a high and moderate porosity was obtained for DUT-49(Cu) and DUT-49(Ni), respectively, other members of the series [DUT-49(M); M= Mn, Fe, Co, Zn, Cd] show very low porosity and shapes of the adsorption isotherms which is not expected for op phases of these MOFs. Investigation on those MOFs revealed that those frameworks undergo structural collapse during the solvent removal at the activation step. Thus, herein, we aimed to study the detailed structural transformations that are possibly occurring during the removal of the subcritical fluid from the framework.

Funding

BMBF Project No 05K19OD2

ERC advanced grant "APLIPORE" (grant agreement No. 742743)

History

Email Address of Submitting Author

volodymyr.bon@tu-dresden.de

Institution

Technische Universität Dresden

Country

Germany

ORCID For Submitting Author

0000-0002-9851-5031

Declaration of Conflict of Interest

Authors declare no conflict of interest

Version Notes

Version 1.0

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