The CFS Engineers the Intrinsic Radiative Decay Rate of Low Quantum Yield Fluorophores

Ignacy Gryczynski, Joanna Malicka, Zygmunt Gryczynski, Chris D. Geddes, Joseph R. Lakowicz

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The radiative decay rate of weakly fluorescent species was investigated by the Center for Fluorescence Spectroscopy (CFS). An increase in the fluorescence intensity for a low Q0 species was observed by placing a high quantum yield fluorophore and a low quantum yield fluorophore above silver islands deposited on quartz microscope slides. The quantum yield and lifetime equations predict a modification in the radiative decay rate of fluorophores, which has been considered as being independent on the fluorophores' oscillator strength and only weakly dependent on its local environment. It was observed that if close proximity of a metal reduces the lifetime ten fold, the incident intensity can increase tenfold before depletion of the ground state.

Original languageEnglish
Article number371242
Pages (from-to)11-13
Number of pages3
JournalJournal of Fluorescence
Volume12
Issue number1
DOIs
StatePublished - 1 Jan 2002

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Quartz
Fluorophores
Fluorescence Spectrometry
Fluorescence spectroscopy
Quantum yield
Silver
Islands
engineer
Fluorescence
Metals
Engineers
incident
Ground state
Microscopes

Keywords

  • Intensified fluorescence
  • Radiative decay rate
  • Surface enhanced fluorescence

Cite this

Gryczynski, Ignacy ; Malicka, Joanna ; Gryczynski, Zygmunt ; Geddes, Chris D. ; Lakowicz, Joseph R. / The CFS Engineers the Intrinsic Radiative Decay Rate of Low Quantum Yield Fluorophores. In: Journal of Fluorescence. 2002 ; Vol. 12, No. 1. pp. 11-13.
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The CFS Engineers the Intrinsic Radiative Decay Rate of Low Quantum Yield Fluorophores. / Gryczynski, Ignacy; Malicka, Joanna; Gryczynski, Zygmunt; Geddes, Chris D.; Lakowicz, Joseph R.

In: Journal of Fluorescence, Vol. 12, No. 1, 371242, 01.01.2002, p. 11-13.

Research output: Contribution to journalArticle

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