Structural evolution in a melt-quenched zeolitic imidazolate framework glass during heat-treatment

Jiayan Zhang; Louis Longley; Hao Liu; Christopher W. Ashling; Philip A. Chater; Kevin A. Beyer; Karena W. Chapman; Haizheng Tao; David A. Keen; Thomas D. Bennett; Yuanzheng Yue

doi:10.1039/C8CC09574D

Structural evolution in a melt-quenched zeolitic imidazolate framework glass during heat-treatment†

Jiayan Zhang,^ab Louis Longley,^c Hao Liu,^ab Christopher W. Ashling,^c Philip A. Chater,^d Kevin A. Beyer,^e Karena W. Chapman,^e Haizheng Tao,

^a David A. Keen,

^f Thomas D. Bennett

*^c and Yuanzheng Yue

*^ab

Author affiliations

* Corresponding authors

^a State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China

^b Department of Chemistry and Bioscience, Aalborg University, DK-9220 Aalborg, Denmark
E-mail: yy@bio.aau.dk

^c Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
E-mail: tdb35@cam.ac.uk

^d Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK

^e X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USA

^f ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxon OX11 0QX, UK

Abstract

A pronounced enthalpy release occurs around 1.38T_g in the prototypical metal–organic framework glass formed from ZIF-4 [Zn(C₃H₃N₂)₂], but there is no sign for any crystallization (i.e., long-range ordering) taking place. The enthalpy release peak is attributed to pore collapse and structural densification.

Chemical Communications

Structural evolution in a melt-quenched zeolitic imidazolate framework glass during heat-treatment†

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Structural evolution in a melt-quenched zeolitic imidazolate framework glass during heat-treatment

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