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Phys Rev Lett. 2005 Feb 11;94(5):058301. Epub 2005 Feb 9.

Nanoparticle-free single molecule anti-stokes Raman spectroscopy.

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  • 1School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta, Georgia 30332-0400, USA.

Erratum in

  • Phys Rev Lett. 2005 Apr 8;94(13):139901. Capadona, Lynn Peyser [corrected to Peyser-Capadona, Lynn].


In the absence of large, plasmon-supporting nanoparticles, biocompatible dendrimer- and peptide-encapsulated few-atom Ag nanoclusters produce scaffold-specific single molecule (SM) Stokes and anti-Stokes Raman scattering. The strong SM vibrational signatures are enhanced by the Agn transitions in nanoparticle-free samples and cannot arise from plasmon enhancement. Characteristic SM-Raman intermittency is observed, with antibunching of the underlying Agn emission directly confirming the SM nature of the emissive species.

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