Authors: (Verónica Pino, Mónica Germán-Hernández, Armide Martín-Pérez, Department of Analytical Chemistry, Nutrition and Food Science, University of La Laguna, Spain)
Abstract: Ionic liquids (ILs) are a class of low melting point, ionic compounds which have a variety of properties allowing many of them to be sustainable green solvents. These nonmolecular solvents possess high thermal stabilities and negligible vapor pressures making them attractive alternatives to environmentally unfriendly solvents that produce volatile organic compounds (VOCs). Their unique solvation properties, coupled to the fact that they can be structurally tailored for specific applications, have resulted in an increasing
study of ILs in many areas of fundamental and applied chemistry.
A new group of ILs able to form aggregates in aqueous solution have been recently described. This behavior makes possible to include these ILs in the category of compounds able to form organized media, like the surfactants. It is very interesting to study these new ILs that exhibit characteristics of cationic surfactants as they constitute a new area of surfactant development, especially considering the limited number of traditional cationic surfactants. Many of these IL-aggregates also possess low critical micelle concentration (CMC) values, which permits the formation of aggregates using smaller amounts of IL. The use of low amounts of ILs also results of environmental interest.