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Chemistry. 2016 Mar 01;22(10):3264-3267. doi: 10.1002/chem.201600330. Epub 2016 Feb 11.

A Breathing Zirconium Metal-Organic Framework with Reversible Loss of Crystallinity by Correlated Nanodomain Formation.

Chemistry (Weinheim an der Bergstrasse, Germany)

Bart Bueken, Frederik Vermoortele, Matthew J Cliffe, Michael T Wharmby, Damien Foucher, Jelle Wieme, Louis Vanduyfhuys, Charlotte Martineau, Norbert Stock, Francis Taulelle, Veronique Van Speybroeck, Andrew L Goodwin, Dirk De Vos

Affiliations

  1. Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, p.?o. box 2461, 3001, Leuven, Belgium.
  2. Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
  3. Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
  4. Institut für Anorganische Chemie, CAU Kiel, Max-Eyth-Strasse 2, 24118, Kiel, Germany.
  5. Diamond Light Source, Harwell Science & Innovation Campus, Didcot, OX11 0DE, UK.
  6. Institut Lavoisier, UMR CNRS 8180, Université de Versailles St-Quentin-en-Yvelines, Avenue des Etats-Unis 45, 78035, Versailles, France.
  7. Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052, Zwijnaarde, Belgium.
  8. Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, p.?o. box 2461, 3001, Leuven, Belgium. [email protected].

PMID: 26865194 DOI: 10.1002/chem.201600330

Abstract

The isoreticular analogue of the metal-organic framework UiO-66(Zr), synthesized with the flexible trans-1,4-cyclohexanedicarboxylic acid as linker, shows a peculiar breathing behavior by reversibly losing long-range crystalline order upon evacuation. The underlying flexibility is attributed to a concerted conformational contraction of up to two thirds of the linkers, which breaks the local lattice symmetry. X-ray scattering data are described well by a nanodomain model in which differently oriented tetragonal-type distortions propagate over about 7-10 unit cells.

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: dynamic porosity; metal-organic frameworks; phase transitions; structure elucidation; zirconium

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