Controlling the aqueous miscibility of ionic liquids: aqueous biphasic systems of water-miscible ionic liquids and water-structuring salts for recycle, metathesis, and separations.

@article{Gutowski2003ControllingTA,
  title={Controlling the aqueous miscibility of ionic liquids: aqueous biphasic systems of water-miscible ionic liquids and water-structuring salts for recycle, metathesis, and separations.},
  author={Keith E. Gutowski and G. A. Broker and H. D. Willauer and J. Huddleston and R. P. Swatloski and J. Holbrey and R. Rogers},
  journal={Journal of the American Chemical Society},
  year={2003},
  volume={125 22},
  pages={
          6632-3
        }
}
Hydrophilic ionic liquids can be salted-out and concentrated from aqueous solution upon addition of kosmotropic salts forming aqueous biphasic systems as illustrated by the phase behavior of mixtures of 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) and K3PO4. 
Switchable (pH-Driven) Aqueous Biphasic Systems formed by Ionic Liquids as Integrated Production-Separation Platforms.
LCST Phase Behavior and Complexation with Water of an Ionic Liquid Incorporating the 5-Phenyltetrazolate Anion.
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