Rapid, solution-based characterization of optimized SERS nanoparticle substrates

Ted A. Laurence, Gary Braun, Chad Talley, Adam Schwartzberg, Martin Moskovits, Norbert Reich, Thomas R Huser

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

We demonstrate the rapid optical characterization of large numbers of individual metal nanoparticles freely diffusing in colloidal solution by confocal laser spectroscopy to guide nanoparticle engineering and optimization. We use ratios of the Rayleigh and Raman scattering response and rotational diffusion timescales of individual nanoparticles to show that hollow gold nanospheres and solid silver nanoparticle dimers linked with a bifunctional ligand, both specifically designed nanostructures, exhibit significantly higher monodispersity than randomly aggregated gold and silver nanoparticles.

Original languageEnglish (US)
Pages (from-to)162-169
Number of pages8
JournalJournal of the American Chemical Society
Volume131
Issue number1
DOIs
StatePublished - Jan 14 2009

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

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