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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Room-temperature columnar mesophases in triazine-gold thiolate metal-organic supramolecular aggregates
Cristina Domínguez1, Benoît Heinrich, Bertrand Donnio
1IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Castilla y León, Spain.
Abstract:
Supramolecular mono- and dinuclear liquid-crystalline gold(I) aggregates have been synthesized by means of hydrogen bond interactions of 2,4,6-triarylamino-1,3,5-triazine with thiolate moities of gold metalloacids [Au(PR3)(SC6H4COOH)] or [μ-(binap){Au(SC6H4COOH)}2], in 1:1 and 2:1 molar ratio, respectively. All of the supramolecular aggregates display a stable columnar hexagonal mesophase (Col(h)) at room-temperature. The supramolecular arrangement within the columns consists of the one-dimensional stacking of triazine units, with the core of the attached metallic thioacid fragments acting as the fourth branch. The phosphine-containing moieties of the metallic thioacid protrude out in the aliphatic continuum. These complexes do not show metallophilic interactions, but this strategy appears very promising for the future design of room-temperature LC mesophases containing interacting metallic fragments.

