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Issue 17, 2019
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A new post-synthetic polymerization strategy makes metal–organic frameworks more stable

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Abstract

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.

Graphical abstract: A new post-synthetic polymerization strategy makes metal–organic frameworks more stable

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Publication details

The article was received on 09 Jan 2019, accepted on 25 Mar 2019 and first published on 25 Mar 2019


Article type: Edge Article
DOI: 10.1039/C9SC00135B
Chem. Sci., 2019,10, 4542-4549
  • Open access: Creative Commons BY-NC license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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

    S. Yang, L. Peng, D. T. Sun, M. Asgari, E. Oveisi, O. Trukhina, S. Bulut, A. Jamali and W. L. Queen, Chem. Sci., 2019, 10, 4542
    DOI: 10.1039/C9SC00135B

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