Phase Transitions in Zeolitic Imidazolate Framework 7: The Importance of Framework Flexibility and Guest-Induced Instability

Zhao, Pu and Lampronti, Giulio I. and Lloyd, Gareth O. and Wharmby, Michael T. and Facq, Sébastien and Cheetham, Anthony K. and Redfern, Simon A. T. (2014) Phase Transitions in Zeolitic Imidazolate Framework 7: The Importance of Framework Flexibility and Guest-Induced Instability. Chemistry of Materials, 26 (5). pp. 1767-1769. ISSN 0897-4756, ESSN: 1520-5002 DOI 10.1021/cm500407f

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Abstract

Zeolite-related materials exhibit a range of novel properties and are of considerable interest for their potential engineering applications. Zeolitic imidazolate frameworks (ZIFs) display zeolite-type structures and are constructed by transitional metals and imidazole molecules.(1) With a wide variety of potential organic ligands, ZIFs present a new family of possible zeolite-related structures with tunable and functionalizable properties. Because of the coordinative metal–imidazolate bonding forming their frameworks, ZIFs are commonly more flexible than their aluminosilicate analogues. They also show unusual gas sorption capacity and related properties. Due to their framework flexibility, ZIFs can undergo structural transformations, e.g., during the sorption process(2) or under high temperature(3) or pressure.(4) It is of great significance to understand potential structural phase transitions since they strongly affect ZIFs’ structurally-related sorption and mechanical properties, which are essential to ZIFs-based technology innovations and industrial applications.Zeolite-related materials exhibit a range of novel properties and are of considerable interest for their potential engineering applications. Zeolitic imidazolate frameworks (ZIFs) display zeolite-type structures and are constructed by transitional metals and imidazole molecules.(1) With a wide variety of potential organic ligands, ZIFs present a new family of possible zeolite-related structures with tunable and functionalizable properties. Because of the coordinative metal–imidazolate bonding forming their frameworks, ZIFs are commonly more flexible than their aluminosilicate analogues. They also show unusual gas sorption capacity and related properties. Due to their framework flexibility, ZIFs can undergo structural transformations, e.g., during the sorption process(2) or under high temperature(3) or pressure.(4) It is of great significance to understand potential structural phase transitions since they strongly affect ZIFs’ structurally-related sorption and mechanical properties, which are essential to ZIFs-based technology innovations and industrial applications.

Item Type:	Article
Uncontrolled Keywords:	2014AREP; IA67; PhD.,
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences 07 - Gold Open Access
Journal or Publication Title:	Chemistry of Materials
Volume:	26
Page Range:	pp. 1767-1769
Identification Number:	10.1021/cm500407f
Depositing User:	Sarah Humbert
Date Deposited:	01 May 2014 22:35
Last Modified:	16 May 2014 12:24
URI:	http://eprints.esc.cam.ac.uk/id/eprint/3035

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