Control of metal–organic framework crystallization by metastable intermediate pre‐equilibrium species

Hamish Yeung, Adam F. Sapnik, Felicity Massingberd-mundy, Michael W. Gaultois, Yue Wu, Duncan A. X. Fraser, Sebastian Henke, Roman Pallach, Niclas Heidenreich, Oxana V. Magdysyuk, Nghia T. Vo, Andrew L. Goodwin

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
280 Downloads (Pure)

Abstract

There is an increasing amount of interest in metal–organic frameworks (MOFs) for a variety of applications, from gas sensing and separations to electronics and catalysis. However, the mechanisms by which they crystallize remain poorly understood. Herein, an important new insight into MOF formation is reported. It is shown that, prior to network assembly, crystallization intermediates in the canonical ZIF‐8 system exist in a dynamic pre‐equilibrium, which depends on the reactant concentrations and the progress of reaction. Concentration can, therefore, be used as a synthetic handle to directly control particle size, with potential implications for industrial scale‐up and gas sorption applications. These findings enable the rationalization of apparent contradictions between previous studies of ZIF‐8 and opens up new opportunities for the control of crystallization in network solids more generally.
Original languageEnglish
Pages (from-to)566-571
Number of pages6
JournalAngewandte Chemie (International Edition)
Volume58
Issue number2
Early online date15 Nov 2018
DOIs
Publication statusPublished - 4 Jan 2019

Keywords

  • crystal engineering
  • kinetics
  • metal–organic frameworks
  • nanoparticles
  • reactive intermediates

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