Nanoparticle-free single molecule anti-stokes Raman spectroscopy

Lynn Peyser-Capadona; Jie Zheng; Jose I. González; Tae-hee Lee; Sandeep A. Patel; Robert M. Dickson

doi:10.1103/PhysRevLett.94.058301

Nanoparticle-free single molecule anti-stokes Raman spectroscopy

Lynn Peyser-Capadona, Jie Zheng, Jose I. González, Tae-hee Lee, Sandeep A. Patel, Robert M. Dickson

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108 Scopus citations

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 Ag_n transitions in nanoparticle-free samples and cannot arise from plasmon enhancement. Characteristic SM-Raman intermittency is observed, with antibunching of the underlying Ag_n emission directly confirming the SM nature of the emissive species.

Original language	English (US)
Article number	058301
Journal	Physical Review Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.94.058301
State	Published - Feb 11 2005

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All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Cite this

Peyser-Capadona, L., Zheng, J., González, J. I., Lee, T., Patel, S. A., & Dickson, R. M. (2005). Nanoparticle-free single molecule anti-stokes Raman spectroscopy. Physical Review Letters, 94(5), [058301]. https://doi.org/10.1103/PhysRevLett.94.058301

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AU - Dickson, Robert M.

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AB - 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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Access to Document

10.1103/PhysRevLett.94.058301