Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5087
Title: An Ultra-Microporous Metal-Organic Framework with Exceptional Xe Capacity
Authors: CHAKRABORTY, DEBANJAN
NANDI, SHYAMAPADA
MAITY, RAHUL
Motkuri, Radha Kishan
Han, Kee Sung
Collins, Sean
Humble, Paul
Hayes, James C.
Woo, Tom K.
VAIDHYANATHAN, RAMANATHAN
Thallapally, Praveen K.
Dept. of Chemistry
Keywords: Confinement
MOFs
Nickel-isonicitinate
Ultra-micropores
Xenon capture
2020
2020-OCT-WEEK1
TOC-OCT-2020
Issue Date: Oct-2020
Publisher: Wiley
Citation: Chemistry—A European Journal, 26(55), 12544-12548.
Abstract: Molecular confinement plays a significant effect on trapped gas and solvent molecules. A fundamental understanding of gas adsorption within the porous confinement provides information necessary to design a material with improved selectivity. In this regard, metal–organic framework (MOF) adsorbents are ideal candidate materials to study confinement effects for weakly interacting gas molecules, such as noble gases. Among the noble gases, xenon (Xe) has practical applications in the medical, automotive and aerospace industries. In this Communication, we report an ultra‐microporous nickel‐isonicotinate MOF with exceptional Xe uptake and selectivity compared to all benchmark MOF and porous organic cage materials. The selectivity arises because of the near perfect fit of the atomic Xe inside the porous confinement. Notably, at low partial pressure, the Ni–MOF interacts very strongly with Xe compared to the closely related Krypton gas (Kr) and more polarizable CO2. Further 129Xe NMR suggests a broad isotropic chemical shift due to the reduced motion as a result of confinement.
URI: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5087
https://doi.org/10.1002/chem.202002331
ISSN: 0947-6539
1521-3765
Appears in Collections:JOURNAL ARTICLES

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