Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 2, Pages 549-557Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta09359h
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Funding
- Saudi Aramco
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We report a facile, one-step post-synthetic fluorination method to increase the CO2 capacity and CO2/N-2 selectivity of porous organic Scholl-coupled polymers. All of the fluorinated polymers that we synthesised showed increases in CO2/N-2 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/N-2 selectivity of 3.0mmol g(-1) and 26:1, respectively, at 298 Kmuch 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.
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