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Fluorescence Spectral Properties of Indocyanine Green on a Roughened Platinum Electrode: Metal-Enhanced Fluorescence

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Abstract

The interactions of fluorophores with noble metal particles can modify their emission spectral properties, a relatively new phenomenon in fluorescence. We subsequently examined indocyanine green (ICG), which is widely used in medical testing and imaging, in close proximity to an electrically roughened platinum electrode. The emission intensity and lifetimes were decreased about 2-fold on the roughened surface as compared to a smooth Pt surface, and the photostability about the same. Platinum does not appear promising for metal enhanced fluorescence, at least for long wavelength fluorophores.

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Authors and Affiliations

  1. Institute of Fluorescence and Center for Fluorescence Spectroscopy, Medical Biotechnology Center, University of Maryland Biotechnology Institute, Baltimore, Maryland

    Chris D. Geddes

  2. Department of Biochemistry and Molecular Biology, Center for Fluorescence Spectroscopy, University of Maryland School of Medicine, 725 West Lombard Street, Baltimore, Maryland, 21201

    Alexandr Parfenov, David Roll, Md. Jamal Uddin & Joseph R. Lakowicz

Authors
  1. Chris D. Geddes
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  2. Alexandr Parfenov
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  3. David Roll
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  4. Md. Jamal Uddin
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  5. Joseph R. Lakowicz
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Correspondence to Joseph R. Lakowicz.

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Geddes, C.D., Parfenov, A., Roll, D. et al. Fluorescence Spectral Properties of Indocyanine Green on a Roughened Platinum Electrode: Metal-Enhanced Fluorescence. Journal of Fluorescence 13, 453–457 (2003). https://doi.org/10.1023/B:JOFL.0000008055.22336.0b

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  • DOI: https://doi.org/10.1023/B:JOFL.0000008055.22336.0b

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