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

Alahmed, A., Briggs, M. E., Cooper, A. and Adams, D. J. (2019) Post-synthetic fluorination of Scholl-coupled microporous polymers for increased CO2 uptake and selectivity. Journal of Materials Chemistry A, 7(2), pp. 546-557. (doi:10.1039/C8TA09359H)

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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 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.

Item Type:Articles
Additional Information:The authors would like to thank Saudi Aramco for funding.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Adams, Dave
Authors: Alahmed, A., Briggs, M. E., Cooper, A., and Adams, D. J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Materials Chemistry A
Publisher:Royal Society of Chemistry
ISSN:2050-7488
ISSN (Online):2050-7496
Published Online:03 December 2018
Copyright Holders:Copyright © 2019 The Royal Society of Chemistry
First Published:First published in Journal of Materials Chemistry A 7(2): 549-557
Publisher Policy:Reproduced under a Creative Commons License

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