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Thermal Expansion of Metal-Organic Framework Crystal-Glass Composites.

Published version
Peer-reviewed

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Authors

Ashling, Christopher W 
Lampronti, Giulio I  ORCID logo  https://orcid.org/0000-0002-1430-3446
Southern, Thomas JF 

Abstract

Metal-organic framework crystal-glass composites (MOF CGCs) are a class of materials comprising a crystalline framework embedded within a MOF glass matrix. Herein, we investigate the thermal expansion behavior of three MOF CGCs, incorporating two flexible (MIL-53(Al) and MIL-118) and one rigid (UL-MOF-1) MOF within a ZIF-62 glass matrix. Specifically, variable-temperature powder X-ray diffraction data and thermomechanical analysis show the suppression of thermal expansivity in each of these three crystalline MOFs when suspended within a ZIF-62 glass matrix. In particular, for the two flexible frameworks, the average volumetric thermal expansion (β) was found to be near-zero in the crystal-glass composite. These results provide a route to engineering thermal expansivity in stimuli-responsive MOF glass composites.

Description

Keywords

3402 Inorganic Chemistry, 34 Chemical Sciences

Journal Title

Inorg Chem

Conference Name

Journal ISSN

0020-1669
1520-510X

Volume Title

61

Publisher

American Chemical Society (ACS)
Sponsorship
EPSRC (1937468)