Please use this identifier to cite or link to this item: https://doi.org/10.1038/ncomms9079
Title: Hybrid glasses from strong and fragile metal-organic framework liquids
Authors: Bennett, T.D
Tan, J.-C
Yue, Y
Baxter, E
Ducati, C
Terrill, N.J
Yeung, H.H.-M
Zhou, Z
Chen, W
Henke, S
Cheetham, A.K 
Greaves, G.N
Keywords: disaccharide
glass
ice
metal organic framework
silicon
crystallization
glass
high temperature
liquid
melting
organometallic compound
topology
zeolite
Article
controlled study
crystallization
decomposition
density
differential scanning calorimetry
diffraction
heating
liquid
melting point
radiation scattering
Issue Date: 2015
Publisher: Nature Publishing Group
Citation: Bennett, T.D, Tan, J.-C, Yue, Y, Baxter, E, Ducati, C, Terrill, N.J, Yeung, H.H.-M, Zhou, Z, Chen, W, Henke, S, Cheetham, A.K, Greaves, G.N (2015). Hybrid glasses from strong and fragile metal-organic framework liquids. Nature Communications 6 : 8079. ScholarBank@NUS Repository. https://doi.org/10.1038/ncomms9079
Rights: Attribution 4.0 International
Abstract: Hybrid glasses connect the emerging field of metal-organic frameworks (MOFs) with the glass formation, amorphization and melting processes of these chemically versatile systems. Though inorganic zeolites collapse around the glass transition and melt at higher temperatures, the relationship between amorphization and melting has so far not been investigated. Here we show how heating MOFs of zeolitic topology first results in a low density 'perfect' glass, similar to those formed in ice, silicon and disaccharides. This order-order transition leads to a super-strong liquid of low fragility that dynamically controls collapse, before a subsequent order-disorder transition, which creates a more fragile high-density liquid. After crystallization to a dense phase, which can be remelted, subsequent quenching results in a bulk glass, virtually identical to the high-density phase. We provide evidence that the wide-ranging melting temperatures of zeolitic MOFs are related to their network topologies and opens up the possibility of 'melt-casting' MOF glasses. © 2015 Macmillan Publishers Limited. All rights reserved.
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/180442
ISSN: 2041-1723
DOI: 10.1038/ncomms9079
Rights: Attribution 4.0 International
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