Nanoparticle-free single molecule anti-stokes Raman spectroscopy

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 na...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2005-02, Vol.94 (5), p.058301-058301, Article 058301
Main Authors: Peyser-Capadona, Lynn, Capadona, Lynn Peyser, Zheng, Jie, González, Jose I, Lee, Tae-Hee, Patel, Sandeep A, Dickson, Robert M
Format: Article
Language:English
Subjects:
Coated Materials, Biocompatible - analysis
Coated Materials, Biocompatible - chemistry
Dendrimers
Nanostructures - analysis
Nanostructures - chemistry
Peptides - analysis
Peptides - chemistry
Polyamines - analysis
Polyamines - chemistry
Silver - analysis
Silver - chemistry
Spectrum Analysis, Raman - methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.94.058301