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Coordination cages as permanently porous ionic liquids

Ma, L; Haynes, CJE; Grommet, AB; Walczak, A; Parkins, CC; Doherty, CM; Longley, L; ... Nitschke, JR; + view all (2020) Coordination cages as permanently porous ionic liquids. Nature Chemistry , 12 pp. 270-275. 10.1038/s41557-020-0419-2. Green open access

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Abstract

Porous materials are widely used in industry for applications that include chemical separations and gas scrubbing. These materials are typically porous solids, although the liquid state can be easier to manipulate in industrial settings. The idea of combining the size and shape selectivity of porous domains with the fluidity of liquids is a promising one and porous liquids composed of functionalized organic cages have recently attracted attention. Here we describe an ionic-liquid, porous, tetrahedral coordination cage. Complementing the gas binding observed in other porous liquids, this material also encapsulates non-gaseous guests—shape and size selectivity was observed for a series of isomeric alcohols. Three gaseous chlorofluorocarbon guests, trichlorofluoromethane, dichlorodifluoromethane and chlorotrifluoromethane, were also shown to be taken up by the liquid coordination cage with an affinity that increased with their size. We hope that these findings will lead to the synthesis of other porous liquids whose guest-uptake properties may be tailored to fulfil specific functions.

Type: Article
Title: Coordination cages as permanently porous ionic liquids
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41557-020-0419-2
Publisher version: https://doi.org/10.1038/s41557-020-0419-2
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Coordination chemistry, Materials chemistry, Supramolecular chemistry
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10091887
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