Melt-Quenched Glasses of Metal-Organic Frameworks

Bennett, Thomas D. and Yue, Yuanzheng and Li, Peng and Qiao, Ang and Tao, Haizheng and Greaves, Neville G. and Richards, Tom and Lampronti, Giulio I. and Redfern, Simon A. T. and Blanc, Frédéric and Farha, Omar K. and Hupp, Joseph T. and Cheetham, Anthony K. and Keen, David A. (2016) Melt-Quenched Glasses of Metal-Organic Frameworks. Journal of the American Chemical Society, 138 (10). pp. 3484-3492. ISSN 0002-7863 Web Edition ISSN: 1520-5126 DOI

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Crystalline solids dominate the field of metal?organic frameworks (MOFs), with access to the liquid and glass states of matter usually prohibited by relatively low temperatures of thermal decomposition. In this work, we give due consideration to framework chemistry and topology to expand the phenomenon of the melting of 3D MOFs, linking crystal chemistry to framework melting temperature and kinetic fragility of the glass-forming liquids. Here we show that melting temperatures can be lowered by altering the chemistry of the crystalline MOF state, which provides a route to facilitate the melting of other MOFs. The glasses formed upon vitrification are chemically and structurally distinct from the three other existing categories of melt-quenched glasses (inorganic nonmetallic, organic, and metallic), and retain the basic metal?ligand connectivity of crystalline MOFs, which connects their mechanical properties to their starting chemical composition. The transfer of functionality from crystal to glass points toward new routes to tunable, functional hybrid glasses.

Item Type: Article
Uncontrolled Keywords: 2015AREP; IA70; weekly list
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
07 - Gold Open Access
Journal or Publication Title: Journal of the American Chemical Society
Volume: 138
Page Range: pp. 3484-3492
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 28 Apr 2016 11:08
Last Modified: 28 Apr 2016 11:08

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