Observation of Sulfur on the Surface of Giant Aurothiol Nanoclusters

C. Gutierrez-Wing, J. A. Ascencio, W. De la Cruz, L. Cota, M. Jose-Yacaman

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We report the study of aurothiol nanoclusters using high-resolution electron microscopy, energy loss spectroscopy, X-ray photoelectron spectroscopy, Auger spectroscopy, and microscopy. It is concluded that the sulfur atoms are located on the surface of the gold nanoparticles in both (100) and (111) microfacets. The X-ray photoelectron spectroscopy data show that there is a Au-Au bond as well as a Au-S bond. Auger depth profile measurements made by sputtering of the nanoparticles corroborates that the sulfur is located on the surface of the nanoparticle. Quantitative Auger analysis indicates a ratio Au/S between ≈1.79 and 1.98.

Original languageEnglish (US)
Pages (from-to)101-105
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number1
StatePublished - 2002
Externally publishedYes


  • Auger analysis
  • Aurothiol nanoclusters
  • EELS
  • HREM
  • Microscopy
  • Sulfur
  • XPS

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics


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