Enhancement of luminescent quenching based oxygen sensing by gold nanoparticles: comparison between luminophore:matrix:nanoparticle thin films on glass and gold coated substrates

Philip Roche; Maurice Cheung; Lei Yao; Andrew G. Kirk; Vamsy P. Chodavarapu

doi:10.1117/1.3526729

1 November 2010 Enhancement of luminescent quenching based oxygen sensing by gold nanoparticles: comparison between luminophore:matrix:nanoparticle thin films on glass and gold coated substrates

Philip Roche, Maurice Cheung, Lei Yao, Andrew G. Kirk, Vamsy P. Chodavarapu

Author Affiliations +

Journal of Nanophotonics, Vol. 4, Issue 1, 043521 (November 2010). https://doi.org/10.1117/1.3526729

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.

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Philip Roche, Maurice Cheung, Lei Yao, Andrew G. Kirk, and Vamsy P. Chodavarapu "Enhancement of luminescent quenching based oxygen sensing by gold nanoparticles: comparison between luminophore:matrix:nanoparticle thin films on glass and gold coated substrates," Journal of Nanophotonics 4(1), 043521 (1 November 2010). https://doi.org/10.1117/1.3526729

Published: 1 November 2010

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