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, heptadecafluorooc-tanesulfonate, and 4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoroundecanoate anions have been synthe-sized and characterized. Their sorption/desorption response towards CO2 has been tested through quartz crystalmicrobalance investigations. The obtained results show that all of the pILs here reported are featured by peculiarCO2 sorption properties as they display fast and linear response, reversibility without any memory effect, andreproducibility, suggesting that anion plays a key role in determining sensitivity.