title: Nonaqueous microemulsions based on n,n'-alkylimidazolium alkylsulfate ionic liquids.
abstract: The ternary system composed of the ionic liquid surfactant (IL-S) 1-butyl-3-methylimidazolium dodecylsulfate ([Bmim][DodSO4]), the room temperature ionic liquid (RTIL) 1-ethyl-3-methylimidazolium ethylsulfate ([Emim][EtSO4]), and toluene has been investigated. Three major mechanisms guiding the structure of the isotropic phase were identified by means of conductometric experiments, which have been correlated to the presence of oil-in-IL, bicontinuous, and IL-in-oil microemulsions. IL-S forms micelles in toluene, which swell by adding RTIL as to be shown by dynamic light scattering (DLS) and small-angle X-ray scattering (SAXS) experiments. Therefore, it is possible to form water-free IL-in-oil reverse microemulsions ≤10 nm in size as a new type of nanoreactor.
authors.affiliation: Institut für Chemie, Universität Potsdam, Potsdam (Golm), Germany.
authors.forename: Oscar
authors.initials: O
authors.lastname: Rojas
authors.forename: Brigitte
authors.initials: B
authors.lastname: Tiersch
authors.forename: Christian
authors.initials: C
authors.lastname: Rabe
authors.forename: Ralf
authors.initials: R
authors.lastname: Stehle
authors.forename: Armin
authors.initials: A
authors.lastname: Hoell
authors.forename: Bastian
authors.initials: B
authors.lastname: Arlt
authors.forename: Joachim
authors.initials: J
authors.lastname: Koetz
mesh_terms: D004655:Emulsions / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry
chemical_list: C525963:1-butyl-3-methylimidazolium; D004655:Emulsions; D007093:Imidazoles; D052578:Ionic Liquids; D013501:Surface-Active Agents; D014050:Toluene; C518739:1-ethyl-3-methylimidazolium