Fast and reversible CO2 quartz crystal microbalance response of vinylimidazolium-based poly(ionic liquid)s

A series of poly(ionic liquid)s (pILs) based on the 1-vinyl-3-hexylimidazolium polymerizable cation and on the bis(trifluoromethylsulfonyl)imide, nonafluoro-1-butanesulfonate, dodecylbenzenesulfonate, heptadecafluorooctanesulfonate, and 4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoroundecanoate anions have been synthesized and characterized. Their sorption/desorption response towards CO2 has been tested through quartz crystal microbalance investigations. The obtained results show that all of the pILs here reported are featured by peculiar CO2 sorption properties as they display fast and linear response, reversibility without any memory effect, and reproducibility, suggesting that anion plays a key role in determining sensitivity. Copyright (c) 2011 John Wiley & Sons, Ltd.