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Nanoscale. 2013 Jun 21;5(12):5637-43. doi: 10.1039/c3nr00677h.

Synthesis, characterization and optical properties of low nuclearity liganded silver clusters: Ag31(SG)19 and Ag15(SG)11.

Nanoscale

Franck Bertorelle, Ramzi Hamouda, Driss Rayane, Michel Broyer, Rodolphe Antoine, Philippe Dugourd, Lars Gell, Alexander Kulesza, Roland Mitrić, Vlasta Bonačić-Koutecký

Affiliations

  1. Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon, 69622 Villeurbanne cedex, France.

PMID: 23685431 DOI: 10.1039/c3nr00677h

Abstract

We report a simple synthesis of silver:glutathione (Ag:SG) clusters using a cyclic reduction under oxidative conditions. Two syntheses are described which lead to solutions containing well-defined Ag31(SG)19 and Ag15(SG)11 clusters that have been characterized by mass spectrometry. The optical properties of silver:glutathione (Ag:SG) cluster solutions have been investigated experimentally. In particular, the solution containing Ag15(SG)11 clusters shows a bright and photostable emission. For Ag31(SG)19 and Ag15(SG)11 clusters, the comparison of experimental findings with DFT and TDDFT calculations allowed us to reveal the structural and electronic properties of such low nuclearity liganded silver clusters.

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