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Journal of Nanophotonics

Enhancement of luminescent quenching based oxygen sensing by gold nanoparticles: comparison between luminophore:matrix:nanoparticle thin films on glass and gold coated substrates
Author(s): Philip Roche; Maurice Cheung; Lei Yao; Andrew G. Kirk; Vamsy P. Chodavarapu
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Paper Abstract

For weak luminescence, quenching of insensitive luminophores by proximity to a gold film improves signal to noise by suppression of background luminescence of Ru(4,7-diphenyl-1,10-anthroline)3Cl2. Initially it was expected that the effects of gold film quenching and nanoparticle enhanced luminescence could be combined to give a summative improvement, but the increase caused by the nanoparticles generates a larger signal to noise ratio and greater sensitivity of those luminophores to the dynamic quenching by gaseous oxygen. Impressive detection limits were achieved on gold coated glass and plain glass, where detection limit was 0.05% and 0.004% and sensitivity 0.02 and 0.05%, respectively.

Paper Details

Date Published: 1 November 2010
PDF: 12 pages
J. Nanophoton. 4(1) 043521 doi: 10.1117/1.3526729
Published in: Journal of Nanophotonics Volume 4, Issue 1
Show Author Affiliations
Philip Roche, McGill Univ. (Canada)
Maurice Cheung, McGill Univ. (United States)
Lei Yao, McGill Univ. (Canada)
Andrew G. Kirk, McGill Univ. (Canada)
Vamsy P. Chodavarapu, McGill Univ. (Canada)

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