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Title: Supramolecular binding and separation of hydrocarbons within a functionalized porous metal–organic framework

Journal Article · · Nature Chemistry
DOI:https://doi.org/10.1038/nchem.2114· OSTI ID:1286811

Supramolecular interactions are fundamental to host-guest binding in many chemical and biological processes. Direct visualization of such supramolecular interactions within host-guest systems is extremely challenging, but crucial to understanding their function. We report a comprehensive study that combines neutron scattering, synchrotron X-ray and neutron diffraction, and computational modelling to define the detailed binding at a molecular level of acetylene, ethylene and ethane within the porous host NOTT-300. This study reveals simultaneous and cooperative hydrogen-bonding, pi center dot center dot center dot pi stacking interactions and intermolecular dipole interactions in the binding of acetylene and ethylene to give up to 12 individual weak supramolecular interactions aligned within the host to form an optimal geometry for the selective binding of hydrocarbons. We also report the cooperative binding of a mixture of acetylene and ethylene within the porous host, together with the corresponding breakthrough experiments and analysis of adsorption isotherms of gas mixtures.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1286811
Alternate ID(s):
OSTI ID: 1352748
Journal Information:
Nature Chemistry, Vol. 7, Issue 2; ISSN 1755-4330
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 433 works
Citation information provided by
Web of Science

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An Ideal Molecular Sieve for Acetylene Removal from Ethylene with Record Selectivity and Productivity journal November 2017
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Boosting Ethylene/Ethane Separation within Copper(I)‐Chelated Metal–Organic Frameworks through Tailor‐Made Aperture and Specific π‐Complexation journal November 2019
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Ammonia Storage by Reversible Host-Guest Site Exchange in a Robust Metal-Organic Framework journal October 2018
Separation of Xe from Kr with Record Selectivity and Productivity in Anion‐Pillared Ultramicroporous Materials by Inverse Size‐Sieving journal January 2020
Mixed Metal–Organic Framework with Multiple Binding Sites for Efficient C 2 H 2 /CO 2 Separation journal March 2020
Selective Aerobic Oxidation of a Metal-Organic Framework Boosts Thermodynamic and Kinetic Propylene/Propane Selectivity journal May 2019
Induced Fit of C 2 H 2 in a Flexible MOF Through Cooperative Action of Open Metal Sites journal May 2019
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Mixed Metal–Organic Framework with Multiple Binding Sites for Efficient C 2 H 2 /CO 2 Separation journal January 2020
Solvent-Dependent Delamination, Restacking, and Ferroelectric Behavior in a New Charge-Separated Layered Compound: [NH 4 ][Ag 3 (C 9 H 5 NO 4 S) 2 (C 13 H 14 N 2 ) 2 ]⋅8 H 2 O journal December 2016
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Syntheses, Structures and Sorption Properties of Three Isoreticular Trinuclear Indium‐Based Amide‐Functionalized Metal–Organic Frameworks journal June 2019
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Cover Picture: Separation of Xe from Kr with Record Selectivity and Productivity in Anion‐Pillared Ultramicroporous Materials by Inverse Size‐Sieving (Angew. Chem. Int. Ed. 9/2020) journal January 2020
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