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Guest Size Limitation in Metal-Organic Framework Crystal-Glass Composites

submitted on 02.11.2020, 17:50 and posted on 03.11.2020, 13:22 by Christopher Ashling, Lauren K. Macreadie, Thomas J. F. Southern, Yiming Zhang, Lauren N. McHugh, Rachel Evans, Stefan Kaskel, Shane G. Telfer, Thomas Bennett

Metal-organic framework crystal-glass composites (MOF CGCs) have previously been formed by embedding crystalline MIL-53(Al) within a ZIF-62 glass (agZIF-62) matrix. Here we highlight thermal stability considerations in the formation of MOF CGCs, and subsequently report the synthesis of two novel MOF CGCs, by incorporating MIL-118, and UL-MOF-1 within agZIF-62. These new materials, alongside the prototypical MOF CGC formed using MIL-53(Al), were studied using scanning electron microscopy, powder X-ray diffraction, and gas sorption techniques. The gas uptake in composites formed from MIL-118C and UL-MOF-1 is largely dominated by the agZIF-62 matrix, suggesting that to improve the porosity of the MOF CGC, the matrix porosity must be improved, or a percolation threshold must be overcome.


Email Address of Submitting Author


University of Cambridge


United Kingdom

ORCID For Submitting Author


Declaration of Conflict of Interest

No conflicts of interest


Read the published paper

in Journal of Materials Chemistry A