Electrochemical Modulation of Fluorophore Emission on a Nanostructured Gold Film

Suppressing the charge‐transfer quenching with an externally applied electrochemical bias results in a fluorescence enhancement of a fluorophore (pyrene) on a gold nanoparticle surface (see scheme). At positive bias the fluorophore is totally quenched on the gold surface while at negative bias (less...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2002-08, Vol.41 (15), p.2764-2767
Main Authors: Kamat, Prashant V., Barazzouk, Said, Hotchandani, Surat
Format: Article
Language:English
Subjects:
Electrochemistry - methods
Electrodes
fluorescence
Fluorescent Dyes - chemistry
Gold
gold nanoparticles
nanostructures
Nanotechnology
organic-inorganic hybrid composites
Oxidation-Reduction
Pyrenes - chemistry
spectroelectrochemistry
Spectrum Analysis
Sulfhydryl Compounds - chemistry
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Summary:Suppressing the charge‐transfer quenching with an externally applied electrochemical bias results in a fluorescence enhancement of a fluorophore (pyrene) on a gold nanoparticle surface (see scheme). At positive bias the fluorophore is totally quenched on the gold surface while at negative bias (less than −0.5 V) it becomes highly fluorescent.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20020802)41:15<2764::AID-ANIE2764>3.0.CO;2-E