title: High Photothermal Activity within Neutral Nickel Dithiolene Complexes Derived from Imidazolium-Based Ionic Liquids.
abstract: A new series of nickel N,N'-dialkylimidazolidine-2,4,5-trithione complexes ([Ni(R2timdt)2]) carrying linear or branched carbon chains (R = n-C4H9, n-C8H17, n-C12H25, n-C16H33, 2-ethylhexyl, 2-butyloctyl, phytanyl) have been obtained through an original synthetic pathway starting from easily available imidazolium-based ionic liquids. The chemical structures of these nickel complexes were confirmed by NMR and high-resolution mass spectroscopies as well as by X-ray analysis performed on single crystals. The complexes strongly absorb in the near-IR (NIR) region around 1000 nm, with high extinction coefficients reaching 80 000 M(-1) cm(-1). They are able to efficiently convert NIR light into heat under laser irradiation with very high photothermal conversion efficiencies (around 30%).
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS, Université de Rennes 1 , Campus de Beaulieu, 35042 Rennes, France.
authors.forename: Kenny
authors.initials: K
authors.lastname: Mebrouk
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS, Université de Rennes 1 , Campus de Beaulieu, 35042 Rennes, France.
authors.forename: Franck
authors.initials: F
authors.lastname: Camerel
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS, Université de Rennes 1 , Campus de Beaulieu, 35042 Rennes, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Jeannin
authors.affiliation: Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, CNRS, Université de Strasbourg , 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
authors.forename: Benoit
authors.initials: B
authors.lastname: Heinrich
authors.affiliation: Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, CNRS, Université de Strasbourg , 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Donnio
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS, Université de Rennes 1 , Campus de Beaulieu, 35042 Rennes, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Fourmigué