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Fluorescent glass films consisting of silica - (3-Glycidyloxypropyl)trimethoxysilane-diurethane siloxane prepared by sol-gel method were incorporated by ethylendiamine tetraacetic acid complex of Europium and co-doped with copper nanoparticles stabilized by polyvinyl pyrrolidone. Increase of steady state fluorescence is explained by scattered light by the nanoparticles. [ABSTRACT FROM AUTHOR]

We outline the applications of lanthanides luminescence in a number of modern fields. The intensity of the luminescence of the expensive lanthanides can be increased by their interaction with nanoparticles of inexpensive copper. As a typical example the chiral pyridine-based Eu 3+ complex was incorporated into amorphous films of polyvinyl alcohol with hydroxyethyl cellulose. The luminescence intensity of the complex is increased by three hundred percent by its interaction with copper nanoparticles. The synthesis and steady state spectroscopy of the materials are presented. [ABSTRACT FROM AUTHOR]

A theoretical model based on the rate equations and energy transfer rates was developed to explain a threefold increase in the photoluminescence of a Eu(III)-pyridine complex in the presence of copper nanoparticles (CuNPs). The model was modified and generalized to describe another two systems: i) copper oxide nanoparticles (CuONPs) interacting with the Eu(III) complex, and ii) simultaneous interactions of CuNPs and CuONPs with the Eu(III) complex. Comparisons with experimental results suggest that the real system involved the effects of both copper and copper oxide nanoparticles on the luminescence of Eu(III). [Display omitted] • Theoretical model for luminescence enhancement of lanthanide complexes interacting with copper and copper oxide nanoparticles. • Plasmonic and energy transfer effects on the luminescence of lanthanide complexes. • Synergism between theory and experiment. • Relevance of considering two types of copper nanoparticles for luminescence enhancement. [ABSTRACT FROM AUTHOR]