Detailed analysis of single‐molecule surface‐enhanced resonance Raman scattering spectra of Rhodamine 6G obtained from isolated nano‐aggregates of colloidal silver | Zendy

Šašić Slobodan | Zendy; Itoh Tamitake | Zendy; Ozaki Yukihiro | Zendy

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Detailed analysis of single‐molecule surface‐enhanced resonance Raman scattering spectra of Rhodamine 6G obtained from isolated nano‐aggregates of colloidal silver

Author(s) -

Šašić Slobodan,

Itoh Tamitake,

Ozaki Yukihiro

Publication year - 2005

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.1329

Subject(s) - rhodamine 6g , raman scattering , raman spectroscopy , molecule , chemistry , spectral line , colloid , resonance (particle physics) , analytical chemistry (journal) , particle (ecology) , rhodamine , optics , atomic physics , organic chemistry , fluorescence , physics , oceanography , astronomy , geology

Surface‐enhanced resonant Raman scattering (SERRS) spectra of Rhodamine 6G (R6G) were acquired from single (aggregated) Ag colloidal particles that had been incubated with various amounts of R6G (0.1–125 n M ). The spectra were investigated in detail and the evidence for a single‐molecule‐like response was found even for R6G:Ag particle ratios greatly exceeding equimolarity. After a thorough comparison with literature data, it is concluded that it is reasonable to expect a single‐molecule‐like response even for fairly ‘high’ R6G concentrations. A series of Raman images are shown and commented on with respect to bulk SERRS measurements. The problem of band assignment of single‐molecule spectra of biological species is addressed. Copyright © 2005 John Wiley & Sons, Ltd.

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