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Issue 2, 2019
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Post-synthetic fluorination of Scholl-coupled microporous polymers for increased CO2 uptake and selectivity

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Abstract

We report a facile, one-step post-synthetic fluorination method to increase the CO2 capacity and CO2/N2 selectivity of porous organic Scholl-coupled polymers. All of the fluorinated polymers that we synthesised showed increases in CO2/N2 IAST selectivity and CO2 isosteric heat; almost all materials also showed an increase in absolute CO2 uptake. Our best-performing material (SC-TPB F) demonstrated a CO2 capacity and CO2/N2 selectivity of 3.0 mmol g−1 and 26 : 1, respectively, at 298 K—much higher than the corresponding non-fluorinated polymer, SC-TPB. This methodology might also be applicable to other polymer classes, such as polymers of intrinsic microporosity, thus providing a more general route to improvements in CO2 capacity and selectivity.

Graphical abstract: Post-synthetic fluorination of Scholl-coupled microporous polymers for increased CO2 uptake and selectivity

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Publication details

The article was received on 27 Sep 2018, accepted on 30 Nov 2018 and first published on 03 Dec 2018


Article type: Paper
DOI: 10.1039/C8TA09359H
J. Mater. Chem. A, 2019,7, 549-557
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    Post-synthetic fluorination of Scholl-coupled microporous polymers for increased CO2 uptake and selectivity

    A. H. Alahmed, M. E. Briggs, A. I. Cooper and D. J. Adams, J. Mater. Chem. A, 2019, 7, 549
    DOI: 10.1039/C8TA09359H

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