Reduced Lifetimes are Directly Correlated with Excitation Irradiance in Metal-Enhanced Fluorescence (MEF)

We describe a fundamental observation in Metal-Enhanced Fluorescence (MEF), which has become a leading technology in the life sciences today, namely, how the lifetime of fluorophores near-to metallic plasmon-supporting silver islands/nanoparticles, modulates as a function of excitation power irradia...

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Veröffentlicht in:	Journal of fluorescence 2012-11, Vol.22 (6), p.1659-1662
Hauptverfasser:	Karolin, Jan O., Geddes, Chris D.
Format:	Artikel
Sprache:	eng
Schlagworte:	2,2'-Dipyridyl - analogs & derivatives 2,2'-Dipyridyl - chemistry Analytical Chemistry Biochemistry Biological and Medical Physics Biomedical and Life Sciences Biomedicine Biophysics Biotechnology Metal Nanoparticles - chemistry Original Paper Silver - chemistry Spectrometry, Fluorescence - methods Time Factors
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Beschreibung
Zusammenfassung:	We describe a fundamental observation in Metal-Enhanced Fluorescence (MEF), which has become a leading technology in the life sciences today, namely, how the lifetime of fluorophores near-to metallic plasmon-supporting silver islands/nanoparticles, modulates as a function of excitation power irradiance. This finding is in stark contrast to that observed in classical far-field fluorescence spectroscopy, where excitation power does not influence fluorophore radiative decay/lifetime.
ISSN:	1053-0509 1573-4994
DOI:	10.1007/s10895-012-1132-3