ABSTRACT
Pure ionic liquids (ILs) are solvents that remain colorless and transparent throughout almost the whole visible and near-infrared (NIR) spectral regions. This property coupled with excellent stability makes ILs very attractive optical solvents that may be used for the absorption and uorescence studies of dissolved substances, as well as for monitoring the reactions
performed in these solvents. Also, the UV-Vis spectroscopy can be and is widely used to analyze the properties/behavior of ILs, as well as to conduct theoretical studies to get a better understanding of the nature of ILs.
