title: Water in Ionic Liquids: Correlation between Anion Hydrophilicity and Near-Infrared Fingerprints.
abstract: We show that fingerprints of the different states of water association can be clearly distinguished in the range of the first overtone of water's symmetric O-H stretching in the spectra of water-saturated [EMIm](+) -based ionic liquids with anions of substantially different hydrophilicity, such as hydrophobic [(CF3 SO2 )2 N](-) , moderately hydrophilic [CF3 SO3 ](-) , and highly hydrophilic [HSO4 ](-) .
authors.affiliation: Department of Conducting polymers, Institute of Macromolecular Chemistry, v.v.i. Academy of Science of the Czech Republic, Heyrovsky Sq. 2, 162 06, Prague 6, Czech Republic.
authors.forename: Elena
authors.initials: E
authors.lastname: TomŠík
authors.affiliation: Department of Conducting polymers, Institute of Macromolecular Chemistry, v.v.i. Academy of Science of the Czech Republic, Heyrovsky Sq. 2, 162 06, Prague 6, Czech Republic. gospodinova@imc.cas.cz.
authors.forename: Natalia
authors.initials: N
authors.lastname: Gospodinova
keywords: NIR spectroscopy; anions; hydrophilicity; ionic liquids; water