Plasmonic Enhancement of Dye Fluorescence in Polymer/Metal Nanocomposites
The effect of the plasmonic enhancement of dye fluorescence in poly(vinyl butyral) films containing Ag/SiO2 core-shell nanoparticles has been thoroughly studied. It has been shown that the magnitude of this effect can be quite large (up to 5 times) even for a dye having a very high quantum yield (coumarin 7). Therewith, it substantially depends on the size and concentration of Ag/SiO2 particles and the quantum yield of a dye. The results obtained are discussed with involvement of mechanisms reported in the literature for plasmonic enhancement of fluorescence of dyes characterized by high and low quantum yields.
We are grateful to Prof. V.A. Kuz’min (Emanuel Institute of Biochemical Physics, Russian Academy of Sciences) for supplying the sample of eosin B.
This work was performed according to an order of the Ministry of Science and Higher Education of the Russian Federation.
CONFLICT OF INTEREST
The authors declare that they have no conflict of interest.
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