Structures and optical properties of 4-5 nm bimetallic AgAu nanoparticles

Z. Y. Li, J. P. Wilcoxon, F. Yin, Y. Chen, R. E. Palmer, R. L. Johnston, Yu Chen

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)


Three types of bimetallic AgAu nanoparticles, with mean size of 4-5 nm, AgcoreAushell, AucoreAgshell and alloyed AgAu, have been synthesized using an inverse micelle method. To image these small size nanoparticles, quantitative high angle annular dark field imaging using scanning transmission electron microscopy was successfully applied. Our results show that good control of nanoparticle size dispersion and composition modulation was achieved. Optical properties of the nanoparticles are correlated with direct internal structure analysis. The structural stability is discussed, based on thermodynamic considerations.

Original languageEnglish
Pages (from-to)363-373
Number of pages11
JournalFaraday Discussions
Publication statusPublished - 2008


  • silver-gold clusters
  • liquid chromatography
  • transition metals
  • nanoalloys
  • alloys
  • nanoclusters

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