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Süss-Fink, Georg

Nom
Süss-Fink, Georg
Affiliation principale
Fonction
Professeur ordinaire
Email
georg.suess-fink@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/385

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  • Publication
    Métadonnées seulement
    Liquid-crystalline thiol- and disulfide-based dendrimers for the functionalization of gold nanoparticles
    (2008)
    Frein, Stephane
    ;
    Boudon, Julien
    ;
    Vonlanthen, Mireille
    ;
    Scharf, Toralf
    ;
    Barbera, Joaquin
    ;
    Süss-Fink, Georg 
    ;
    Burgi, Thomas
    ;
    Deschenaux, Robert 
    Liq. cryst. dendrons carrying either a thiol or disulfide function which display nematic, smectic A, columnar, or chiral nematic phases have been synthesized. Their mesomorphic properties are in agreement with the nature of the mesogenic units and structure of the dendrons. The first-generation poly(aryl ester) dendron contg. two cyanobiphenyl mesogenic units was used to functionalize gold nanoparticles. For full coverage, a smectic-like supramol. organization on the nanometer scale is obsd., when the gold nanoparticles are spread onto carbon-coated copper grids. This results indicates that the dendritic ligands reported here act as self-organization promoters. [on SciFinder(R)]
  • Publication
    Métadonnées seulement
    Mesomorphic Metallo-Dendrimers Based on the Metal-Metal Bonded Ru2(CO)4 Sawhorse Unit
    (2008)
    Frein, Stephane
    ;
    Auzias, Mathieu
    ;
    Sondenecker, Aline
    ;
    Vieille-Petit, Ludovic
    ;
    Guintchin, Boris
    ;
    Maringa, Natacha
    ;
    Süss-Fink, Georg 
    ;
    Barbera, Joaquin
    ;
    Deschenaux, Robert 
    Dinuclear Ru complexes contg. the stable metal-metal bonded Ru2(CO)4 sawhorse unit with two dendritic carboxylato bridges were synthesized and characterized. All complexes Ru2(CO)4(O2CR)2L2 (R = R1, R2, R3) contg. cyanobiphenyl-based poly(arylester) dendrons of 1st (R1), 2nd (R2), and 3rd (R3) generation and PPh3, pyridine, or 4-picoline ligands L proved to be mesomorphic, giving rise to smectic A or smectic A and nematic phases. The supramol. organization within the smectic A phase is governed by the nature and structure of the mesogenic units and dendritic core. Such materials are of interest for the design of catalytically active anisotropic fluids. [on SciFinder(R)]