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)

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