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Paper

Chem. Commun., 2001, 413 - 414, DOI: 10.1039/b008039j

How polar are room-temperature ionic liquids?

Sudhir N. V. K. Aki, Joan F. Brennecke and Anunay Samanta

The solvent strength and polarity of four imidazolium and pyridinium based ionic liquids, as measured using two different fluorescent probes, indicate that these liquids are more polar than acetonitrile but less polar than methanol.