Multilayer structures of self-assembled gold nanoparticles as a unique SERS and SEIRA substrate

Chemphyschem. 2009 May 11;10(7):1106-11. doi: 10.1002/cphc.200800815.

Abstract

Metallic multilayer structures consisting of self-assembled nanoparticles are prepared by successive immersion of a functionalized glass substrate in a gold colloidal suspension, and are characterized by UV/Vis spectroscopy and atomic force microscopy. The ability of the thin film to concomitantly enhance the Raman and IR signals of an adsorbed molecule is evaluated and a detailed analysis of the recorded spectra is provided, which emphasizes the capability of these complementary methods to provide information about the adsorbed species. This unique surface-enhanced Raman spectroscopy (SERS) and surface-enhanced infrared absorption (SEIRA) substrate could be further used for applications in the elucidation of the structure of a great variety of adsorbed samples.

MeSH terms

  • Glass / chemistry
  • Gold / chemistry*
  • Membranes, Artificial*
  • Metal Nanoparticles / chemistry*
  • Molecular Structure
  • Particle Size
  • Spectrophotometry, Infrared / methods
  • Spectrum Analysis, Raman / methods
  • Surface Properties

Substances

  • Membranes, Artificial
  • Gold