Issue 21, 2020

Investigating the melting behaviour of polymorphic zeolitic imidazolate frameworks

Abstract

Recently, there has been growing interest in the amorphous states of metal–organic frameworks (MOFs). Particular focus has been given to melt-quenched MOF glasses. In this work, to improve our understanding of the factors influencing melting, the thermal response of four closely related zeolitic imidazolate frameworks (ZIFs) was studied. Electron withdrawing ligands were found to lower both the melting and glass transition temperatures, providing a promising strategy for improving the processability of MOFs in the liquid state. Crucially, dense frameworks appear to be essential for melting, with their presence also initiating the melting of open pore frameworks. This opens up the rich polymorphic landscape of ZIFs to the preparation of novel MOF liquids and glasses.

Graphical abstract: Investigating the melting behaviour of polymorphic zeolitic imidazolate frameworks

Supplementary files

Article information

Article type
Paper
Submitted
17 mar 2020
Accepted
06 may 2020
First published
06 may 2020
This article is Open Access
Creative Commons BY-NC license

CrystEngComm, 2020,22, 3627-3637

Investigating the melting behaviour of polymorphic zeolitic imidazolate frameworks

A. M. Bumstead, M. L. Ríos Gómez, M. F. Thorne, A. F. Sapnik, L. Longley, J. M. Tuffnell, D. S. Keeble, D. A. Keen and T. D. Bennett, CrystEngComm, 2020, 22, 3627 DOI: 10.1039/D0CE00408A

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