Liquid phase blending of metal-organic frameworks

Louis Longley, Sean M. Collins, Chao Zhou, Glen J. Smales, Sarah E. Norman, Nick J. Brownbill, Christopher W. Ashling, Philip A. Chater, Robert Tovey, Carola-Bibiane Schönlieb, Thomas F. Headen, Nicholas J. Terrill, Yuanzheng Yue, Andrew J. Smith, Frédéric Blanc, David A. Keen, Paul A. Midgley and Thomas D. Bennett ()
Additional contact information
Louis Longley: University of Cambridge
Sean M. Collins: University of Cambridge
Chao Zhou: Aalborg University
Glen J. Smales: University College London
Sarah E. Norman: Rutherford Appleton Laboratory
Nick J. Brownbill: University of Liverpool
Christopher W. Ashling: University of Cambridge
Philip A. Chater: Diamond Light Source Ltd
Robert Tovey: Centre for Mathematical Sciences
Carola-Bibiane Schönlieb: Centre for Mathematical Sciences
Thomas F. Headen: Rutherford Appleton Laboratory
Nicholas J. Terrill: Diamond Light Source Ltd
Yuanzheng Yue: Aalborg University
Andrew J. Smith: Diamond Light Source Ltd
Frédéric Blanc: University of Liverpool
David A. Keen: Rutherford Appleton Laboratory
Paul A. Midgley: University of Cambridge
Thomas D. Bennett: University of Cambridge

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract The liquid and glass states of metal–organic frameworks (MOFs) have recently become of interest due to the potential for liquid-phase separations and ion transport, alongside the fundamental nature of the latter as a new, fourth category of melt-quenched glass. Here we show that the MOF liquid state can be blended with another MOF component, resulting in a domain structured MOF glass with a single, tailorable glass transition. Intra-domain connectivity and short range order is confirmed by nuclear magnetic resonance spectroscopy and pair distribution function measurements. The interfacial binding between MOF domains in the glass state is evidenced by electron tomography, and the relationship between domain size and Tg investigated. Nanoindentation experiments are also performed to place this new class of MOF materials into context with organic blends and inorganic alloys.

Date: 2018
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DOI: 10.1038/s41467-018-04553-6

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