Abstract
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.
Original language | English (US) |
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Article number | 058301 |
Journal | Physical review letters |
Volume | 94 |
Issue number | 5 |
DOIs | |
State | Published - Feb 11 2005 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)