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A new post-synthetic polymerization strategy makes metal-organic frameworks more stable.
Journal article

A new post-synthetic polymerization strategy makes metal-organic frameworks more stable.

  • Yang S Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Peng L Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Sun DT Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Asgari M Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Oveisi E Interdisciplinary Center for Electron Microscopy , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland.
  • Trukhina O Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Bulut S Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Jamali A Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
  • Queen WL Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , CH-1051 Sion , Switzerland . Email: wendy.queen@epfl.ch ; Tel: +41 216958243.
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  • 2019-05-25
Published in:
  • Chemical science. - 2019
General Chemistry
English Metal-organic frameworks are of interest in a number of host-guest applications. However, their weak coordination bonding often leads to instability in aqueous environments, particularly at extreme pH, and hence, is a challenging topic in the field. In this work, a two-step, post-synthetic polymerization method is used to create a series of highly hydrophobic, stable MOF composites. The MOFs are first coated with thin layers of polydopamine from free-base dopamine under a mild oxygen atmosphere, which then undergoes a Michael addition to covalently graft hydrophobic molecules to the external MOF surface. This easy, mild post-synthetic modification is shown to significantly improve the stability of a number of structurally diverse MOFs including HKUST-1 (Cu), ZIF-67 (Co), ZIF-8 (Zn), UiO-66 (Zr), Cu-TDPAT (Cu), Mg-MOF-74 (Mg) and MIL-100 (Fe) in wet, caustic (acidic and basic) environments as determined by powder X-ray diffraction and surface area measurements.
Language
  • English
Open access status
gold
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Persistent URL
https://sonar.ch/global/documents/190583
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