Fluorescence quantum yield measurement in nanoparticle-fluorophore systems by thermal lens spectroscopy

M. Ferreira; V. Piscitelli

doi:10.1117/12.2225098

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19 April 2016 Fluorescence quantum yield measurement in nanoparticle-fluorophore systems by thermal lens spectroscopy

M. Ferreira, V. Piscitelli

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Proceedings Volume 9884, Nanophotonics VI; 988422 (2016) https://doi.org/10.1117/12.2225098
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

Metallic nanoparticles have been used as a way to tailor the fluorescence properties like quantum yield, but regular fluorescence quantum yield measurements have to counter the reflection and dispersion of a sample for an accurate result. Thermal lens spectroscopy is a good alternative to resolve this problem because doesn’t measure the fluorescence intensity but the heat generated by absorption. We studied the changes induced by silver nanoparticles, generated by laser ablation, in the fluorescence peak and quantum yield of Rhodamine B. We fund that the silver nanoparticles lowered the fluorescence peak and quenched the fluorescence of the Rhodamine B and how much is quenched also depends on its concentration.

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M. Ferreira and V. Piscitelli "Fluorescence quantum yield measurement in nanoparticle-fluorophore systems by thermal lens spectroscopy", Proc. SPIE 9884, Nanophotonics VI, 988422 (19 April 2016); https://doi.org/10.1117/12.2225098

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