First Observation of Surface Plasmon-Coupled Chemiluminescence (SPCC) |
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Authors: | Chowdhury Mustafa H Malyn Stuart N Aslan Kadir Lakowicz Joseph R Geddes Chris D |
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Institution: | Center for Fluorescence Spectroscopy, Medical Biotechnology Center, University of Maryland School of Medicine, 725 West Lombard St, Baltimore, MD, 21201. |
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Abstract: | In this letter, we report the first observation of surface plasmon-coupled chemiluminescence (SPCC), where the luminescence from chemically induced electronic excited states couples to surface plasmons in a thin continuous silver film. The SPCC is highly directional and predominantly p-polarized, strongly suggesting that the emission is from surface plasmons instead of the luminophores directly themselves. This indicates that surface plasmons can be directly excited from chemically induced excited states. With a wealth of assays that employ chemiluminescence based detection currently in use, then our findings suggest new chemiluminescence sensing strategies based on localized, directional and polarized chemiluminescence detection. |
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