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Communication Dans Un Congrès Année : 2014

Highly luminescent Au(I)-thiolate coordination polymers

C. Lavenn
  • Fonction : Auteur
N. Guilloux
  • Fonction : Auteur
G. Ledoux
C. Dujardin
  • Fonction : Auteur
A. Demessence
  • Fonction : Auteur

Résumé

Polynuclear hybrid Au(I) compounds exhibit a very large domain of applications such as electronic devices, sensors, photocatalysis and also biology or health. These applications are related to the ability of gold(I) to form aurophilic interactions which gives luminescent materials. Thiolate gold(I) compounds are an important class of materials due to the high affinity of gold for sulfur and can generate complexes, polymers, stabilized gold nanoparticles or SAM. Thus, thiolate gold(I) polymers are a key step in the Brust synthesis of gold nanoparticles. However relatively little is known about their structure and properties and their influence on the size and electronic properties of the particles. Indeed, luminescence of thiolate gold nanoclusters, with gold core diameter less than 2 nm, is highly dependent of the structure and the arrangement of Au(I)-thiolate motifs at the surface. So to understand the luminescence and the formation of gold clusters, we will present the synthesis and the first structure resolutions by powder X-Ray diffraction of series of {Au(I)-SR}n coordination polymers. We will demonstrate that depending on the substituent (R = Ph, PhCOOH, PhNH2, PhtBu, naphthalene, C11H23, C2H4Ph…) different structures are obtained (lamellar or helicoidal) with luminescent properties governed by Au-Au distances. Reduction of these polymers to form functionalized gold nanoparticles will also be reported and will contribute to a better control of nanoparticles preparation.
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Dates et versions

hal-01057878 , version 1 (25-08-2014)

Identifiants

  • HAL Id : hal-01057878 , version 1

Citer

C. Lavenn, N. Guilloux, G. Ledoux, C. Dujardin, A. Demessence. Highly luminescent Au(I)-thiolate coordination polymers. E-MRS 2014 SPRING MEETING, May 2014, Lille, France. ⟨hal-01057878⟩
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