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High temperature expulsion of thermolabile groups for pore-space expansion in metal-organic frameworks

Abstract

Direct radiative heating at 200 °C quantitatively converts sulfoxide-tags to desirable vinyl groups on a porous zinc(II) metal-organic framework analogue of IRMOF-9. The transformation results in an expansion of the pore volume of the framework and a higher surface area. The framework topology and crystallinity are preserved during thermolysis, as established by powder X-ray diffraction, thermal analysis and computational studies. Importantly, the volatile by-product is chemically benign and escapes without damaging the framework. In this way, the postsynthetic thermolysis yields a material with identical properties to that prepared by direct synthesis. This work expands the repertoire of post-synthetic thermochemistry for MOFs, and demonstrates that high-temperature processes can be compatible with the retention of important framework properties.

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Publication details

The article was received on 12 Oct 2018, accepted on 08 Nov 2018 and first published on 09 Nov 2018


Article type: Paper
DOI: 10.1039/C8CE01740A
Citation: CrystEngComm, 2018, Accepted Manuscript
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    High temperature expulsion of thermolabile groups for pore-space expansion in metal-organic frameworks

    C. Richardson, M. R. Bryant, T. A. Ablott, S. Telfer and L. L. Liu, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01740A

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