Critical sizes in the growth of Au clusters

M. M. Alvarez, J. T. Khoury, T. G. Schaaff, M. Shafigullin, I. Vezmar, R. L. Whetten

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

Abstract

A systematic exploration of the growth of Au clusters has revealed a critical size for the formation of stable assemblies. Mass-spectrometric measurements of clusters, as grown in the presence of an excess of weakly binding long-chain n-alkylthiol(ate) groups, show high yields of new compounds with core masses near the 15k minimum (≈ 75 Au atoms; k = 103 amu), and also at 23k, and 29k. Structural analyses establish their cores as compact metal nanocrystals of the corresponding effective diameters (1.4 to 1.7 nm), probably of decahedral close-packing and morphology. The precise identities of this sequence of special structures can now be sought.

Original languageEnglish (US)
Pages (from-to)91-98
Number of pages8
JournalChemical Physics Letters
Volume266
Issue number1-2
DOIs
StatePublished - Feb 21 1997
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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