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Liquid metal–organic frameworks

DOI: 10.1038/nmat4998 DOI Help

Authors: Romain Gaillac (PSL Research University, CNRS; Air Liquide, Centre de Recherche Paris Saclay) , Pluton Pullumbi (Air Liquide, Centre de Recherche Paris Saclay) , Kevin A. Beyer (Advanced Photon Source) , Karena W. Chapman (Advanced Photon Source) , David A. Keen (ISIS Facility) , Thomas Bennett (University of Cambridge) , François-xavier Coudert (PSL Research University, CNRS)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Materials , VOL 393

State: Published (Approved)
Published: October 2017
Diamond Proposal Number(s): 15676

Abstract: Metal–organic frameworks (MOFs) are a family of chemically diverse materials, with applications in a wide range of fields, covering engineering, physics, chemistry, biology and medicine. Until recently, research has focused almost entirely on crystalline structures, yet now a clear trend is emerging, shifting the emphasis onto disordered states, including ‘defective by design’ crystals, as well as amorphous phases such as glasses and gels. Here we introduce a strongly associated MOF liquid, obtained by melting a zeolitic imidazolate framework. We combine in situ variable temperature X-ray, ex situ neutron pair distribution function experiments, and first-principles molecular dynamics simulations to study the melting phenomenon and the nature of the liquid obtained. We demonstrate from structural, dynamical, and thermodynamical information that the chemical configuration, coordinative bonding, and porosity of the parent crystalline framework survive upon formation of the MOF liquid.

Journal Keywords: Condensed-matter physics; Coordination chemistry; Materials science; Physical chemistry

Subject Areas: Materials, Chemistry


Instruments: I15-1-X-ray Pair Distribution Function (XPDF)