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Surface- and resonance-enhanced micro-Raman spectroscopy of xanthene dyes: from the ensemble to single molecules.
Chemphyschem. 2005 Jan; 6(1):154-63.C

Abstract

Surface-enhanced resonance Raman scattering (SERRS) spectra of various rhodamine dyes, of pyronine G and thiopyronine adsorbed on isolated silver clusters were recorded at the ensemble level and at the single-molecule level with a high-resolution confocal laser microscope equipped with a spectrograph and a CCD-detector. Comparing single-molecule spectra with ensemble spectra, various inhomogeneous spectral features, such as line splitting, spectral wandering, spectral diffusion and abrupt spectral jumps between different metastable spectral states, are revealed positions and the relative intensities of the vibronic bands. Resonance enhancement is investigated with respect to single-molecule surface-enhanced Raman scattering (SERS) spectroscopy and is found to be responsible for approximately three orders of magnitude in sensitivity. A significant influence of the substituents on the single-molecule SERRS sensitivity is found, showing that various chemical effects are responsible for surface enhancement in addition to the electromagnetic enhancement effect.

Authors+Show Affiliations

Labor für Physikalische und Theoretische Chemie, Universität Siegen, Adolf-Reichwein-Str. 2, 57068 Siegen, Germany.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15688659

Citation

Vosgröne, T, and A J. Meixner. "Surface- and Resonance-enhanced micro-Raman Spectroscopy of Xanthene Dyes: From the Ensemble to Single Molecules." Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry, vol. 6, no. 1, 2005, pp. 154-63.
Vosgröne T, Meixner AJ. Surface- and resonance-enhanced micro-Raman spectroscopy of xanthene dyes: from the ensemble to single molecules. Chemphyschem. 2005;6(1):154-63.
Vosgröne, T., & Meixner, A. J. (2005). Surface- and resonance-enhanced micro-Raman spectroscopy of xanthene dyes: from the ensemble to single molecules. Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry, 6(1), 154-63.
Vosgröne T, Meixner AJ. Surface- and Resonance-enhanced micro-Raman Spectroscopy of Xanthene Dyes: From the Ensemble to Single Molecules. Chemphyschem. 2005;6(1):154-63. PubMed PMID: 15688659.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surface- and resonance-enhanced micro-Raman spectroscopy of xanthene dyes: from the ensemble to single molecules. AU - Vosgröne,T, AU - Meixner,A J, PY - 2005/2/4/pubmed PY - 2005/2/4/medline PY - 2005/2/4/entrez SP - 154 EP - 63 JF - Chemphyschem : a European journal of chemical physics and physical chemistry JO - Chemphyschem VL - 6 IS - 1 N2 - Surface-enhanced resonance Raman scattering (SERRS) spectra of various rhodamine dyes, of pyronine G and thiopyronine adsorbed on isolated silver clusters were recorded at the ensemble level and at the single-molecule level with a high-resolution confocal laser microscope equipped with a spectrograph and a CCD-detector. Comparing single-molecule spectra with ensemble spectra, various inhomogeneous spectral features, such as line splitting, spectral wandering, spectral diffusion and abrupt spectral jumps between different metastable spectral states, are revealed positions and the relative intensities of the vibronic bands. Resonance enhancement is investigated with respect to single-molecule surface-enhanced Raman scattering (SERS) spectroscopy and is found to be responsible for approximately three orders of magnitude in sensitivity. A significant influence of the substituents on the single-molecule SERRS sensitivity is found, showing that various chemical effects are responsible for surface enhancement in addition to the electromagnetic enhancement effect. SN - 1439-4235 UR - https://www.unboundmedicine.com/medline/citation/15688659/Surface__and_resonance_enhanced_micro_Raman_spectroscopy_of_xanthene_dyes:_from_the_ensemble_to_single_molecules_ L2 - https://doi.org/10.1002/cphc.200400395 DB - PRIME DP - Unbound Medicine ER -
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