title: Stability of divalent europium in an ionic liquid: spectroscopic investigations in 1-methyl-3-butylimidazolium hexafluorophosphate.
abstract: In this work, devoted to 1-methyl-3-butylimidazolium hexafluorophosphate ionic liquid (BumimPF(6)), the importance of the purity of the solvent for spectroscopic investigations is highlighted. Results from small angle X-ray scattering indicate that the pure solvent exhibits a local organization. Europium(II), which appears to be unusually stable in BumimPF(6), is characterized by spectroscopic techniques (absorption, luminescence). Solvation of Eu(II) in BumimPF(6) and complexation effects in the presence of the crown ether 15C5 solubilized in the ionic liquid are discussed.
authors.affiliation: Institut de Recherches Subatomiques, CNRS/IN2P3 and Université L. Pasteur, B. P. 28, 67037 Strasbourg Cedex 2, France. gilles.moutiers@cea.fr
authors.forename: Isabelle
authors.initials: I
authors.lastname: Billard
authors.forename: Gilles
authors.initials: G
authors.lastname: Moutiers
authors.forename: Alexandre
authors.initials: A
authors.lastname: Labet
authors.forename: Antoine
authors.initials: A
authors.lastname: El Azzi
authors.forename: Clotilde
authors.initials: C
authors.lastname: Gaillard
authors.forename: Clarisse
authors.initials: C
authors.lastname: Mariet
authors.forename: Klaus
authors.initials: K
authors.lastname: Lützenkirchen