title: Extending the range of switchable-hydrophilicity solvents.
abstract: A switchable-hydrophilicity solvent (SHS) is a solvent that in one state forms a biphasic mixture with water but can be reversibly switched to another state that is miscible with water. All of the amine SHSs that we have reported previously lie within a particular basicity and hydrophilicity range (9.5 < pKaH < 11 and 1.0 < log Kow < 2.5, respectively). We report an extension of this range by altering the pressure of CO2 as well as the water : SHS volume ratio used in the process. Increasing the pressure of CO2 and/or the water : amine volume ratio allows some amines with pKaH < 9.5 or log Kow > 2.5 to function as SHSs.
authors.affiliation: Queen's University, Chernoff Hall, Kingston, Canada. philip.jessop@chem.queensu.ca.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Durelle
authors.forename: Jesse R
authors.initials: JR
authors.lastname: Vanderveen
authors.forename: Yi
authors.initials: Y
authors.lastname: Quan
authors.forename: Courtney B
authors.initials: CB
authors.lastname: Chalifoux
authors.forename: Julia E
authors.initials: JE
authors.lastname: Kostin
authors.forename: Philip G
authors.initials: PG
authors.lastname: Jessop