title: Nanometrization of Lanthanide-Based Coordination Polymers.
abstract: Heteronuclear lanthanide-based coordination polymers are microcrystalline powders, the luminescence properties of which can be precisely tuned by judicious choice of the rare-earth ions. In this study, we demonstrate that such materials can also be obtained as stable solutions of nanoparticles in non-toxic polyols. Bulk powders of the formula [Ln2-2x Ln'2x (bdc)3 ⋅4 H2 O]∞ (where H2 bdc denotes 1,4-benzene-dicarboxylic acid, 0≤x≤1, and Ln and Ln' denote lanthanide ions of the series La to Tm plus Y) afford nanoparticles that have been characterized by dynamic light-scattering (DLS) and transmission electron microscopy (TEM) measurements. Their luminescence properties are similar to those of the bulk materials. Stabilities versus time and versus dilution with another solvent have been studied. This study has revealed that it is possible to tune the size of the nanoparticles. This process offers a reliable means of synthesizing suspensions of nanoparticles with tunable luminescence properties and tunable size distributions in a green solvent (glycerol). The process is also extendable to other coordination polymers and other solvents (ethylene glycol, for example). It constitutes a new route for the facile solubilization of lanthanide-based coordination polymers.
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France).|UMR 6226 Institut des Sciences Chimiques de Rennes, Université de Rennes 1, 35042 Rennes (France).
authors.forename: Chrystelle
authors.initials: C
authors.lastname: Neaime
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France). carole.daiguebonne@insa-rennes.fr.
authors.forename: Carole
authors.initials: C
authors.lastname: Daiguebonne
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France).
authors.forename: Guillaume
authors.initials: G
authors.lastname: Calvez
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France).
authors.forename: Stéphane
authors.initials: S
authors.lastname: Freslon
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France).
authors.forename: Kevin
authors.initials: K
authors.lastname: Bernot
authors.affiliation: CNRS, LINK, UMI 3629, National Institute of Material Science, 1-1 Namiki, 305-0044, Tsukuba (Japan).
authors.forename: Fabien
authors.initials: F
authors.lastname: Grasset
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, Université de Rennes 1, 35042 Rennes (France).
authors.forename: Stéphane
authors.initials: S
authors.lastname: Cordier
authors.affiliation: UMR 6226 Institut des Sciences Chimiques de Rennes, INSA Rennes, 35708 Rennes (France).
authors.forename: Olivier
authors.initials: O
authors.lastname: Guillou
mesh_terms: D007477:Ions; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D049449:Luminescence; D053758:Nanoparticles; D009942:Organometallic Compounds / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012996:Solutions
chemical_list: D007477:Ions; D028581:Lanthanoid Series Elements; D009942:Organometallic Compounds; D011108:Polymers; D012996:Solutions; C024617:polyol
keywords: coordination polymers; lanthanides; luminescence; nanoparticles; post-synthesis processing