Volume 119, Number 5, September 2017
|Number of page(s)||7|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||14 November 2017|
On the stability of noble-metal nanoclusters protected with thiolate ligands(a)
1 Instituto de Física, Universidad Nacional Autónoma de México - Apartado Postal 20-364, Cd. de México C. P. 01000, México
2 Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco - Av. San Pablo 180, Cd. de México C.P. 02200, México
Received: 3 October 2017
Accepted: 25 October 2017
Noble metal nanoclusters (NCs) protected with thiolate ligands have been of interest because of their long-term stability that makes them suitable as building blocks for diverse assembled systems with emergent and improved functions. Despite the advances in synthesis and characterization, the mechanisms that contribute to their stability are still poorly understood. In this article, we review the different criteria that have been used to explain the experimental stability of NCs with a well-defined number of atoms that are protected with thiolate ligands. We discuss why these criteria are not enough to explain the stability. We conclude that there are other physical factors that should be included when explaining the stability of these systems and could be important for the discovery of new noble-metal NCs.
PACS: 61.46.Bc – Structure of clusters (e.g., metcars; not fragments of crystals; free or loosely aggregated or loosely attached to a substrate) / 68.43.Hn – Structure of assemblies of adsorbates (two- and three-dimensional clustering)
© EPLA, 2017
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