Properties of Single-Component Metal-Organic Framework Crystal-Glass Composites

Lauren N McHugh; Michael F Thorne; Georgina Robertson; Giorgio Divitini; Thomas D Bennett

doi:10.1002/chem.202104026

Properties of Single-Component Metal-Organic Framework Crystal-Glass Composites

Chemistry. 2022 Feb 1;28(7):e202104026. doi: 10.1002/chem.202104026. Epub 2021 Dec 21.

Authors

Lauren N McHugh¹, Michael F Thorne¹, Georgina Robertson¹, Giorgio Divitini¹, Thomas D Bennett¹

Affiliation

¹ Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom.

PMID: 34784437
DOI: 10.1002/chem.202104026

Abstract

The formation, and subsequent structural, thermal and adsorptive properties of single-component metal-organic framework crystal-glass composites (MOF-CGCs) are investigated. A series of novel materials exhibiting chemically identical glassy and crystalline phases within the same material were produced, where crystalline ZIF-62(Zn) was incorporated within an a_g ZIF-62(Zn) matrix. X-ray diffraction showed that the crystalline phase was still present after heating to above the glass transition temperature of a_g ZIF-62(Zn), and interfacial compatibility between the crystalline and glassy phases was investigated using a mixed-metal (ZIF-62(Co))_0.5 (a_g ZIF-62(Zn))_0.5 analogue. CO₂ gas adsorption measurements showed that the CO₂ uptakes of the MOF-CGCs were between those of the crystalline and glassy phases.

Keywords: amorphous materials; composites; gas adsorption; metal-organic frameworks; thermal analysis.

Abstract

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