Intensification of luminescence of Europium-EDTA complex in polyvinyl pyrrolidone films by copper nanoparticles

Renata Reisfeld , Viktoria Levchenko , Agata Lazarowska , Sebastian Mahlik , Marek Grinberg

Abstract

Stable copper nanoparticles (CuNPs) were prepared and incorporated into polyvinylpyrrolidone (PVP) films together with pre-prepared complex of europium-ethylenediaminetetraacetic acid (EuEDTA). From the comparison of the excitation spectrum of the complex alone and of the complex in conjunction with CuNPs an increased fluorescence intensity of the complex is observed as the result of interaction of the complex with surface plasmons of copper. This effect is maximal when the extinction band of CuNPs coincides with the absorption maximum of the complex, as much more light reaches the excited state of europium in the complex during the excitation events as the result of light scattered by copper plasmons. An additional band was observed in the excitation spectrum of the complex in co-doped by the CuNPs around 320÷390 nm which we attribute to electron transfer from CuNPs to excited state of europium.
Author Renata Reisfeld
Renata Reisfeld,,
-
, Viktoria Levchenko
Viktoria Levchenko,,
-
, Agata Lazarowska IFD
Agata Lazarowska,,
- Institute of Experimental Physics
, Sebastian Mahlik IFD
Sebastian Mahlik,,
- Institute of Experimental Physics
, Marek Grinberg IFD
Marek Grinberg,,
- Institute of Experimental Physics
Journal seriesOptical Materials, ISSN 0925-3467
Issue year2016
Vol59
Pages3-7
Publication size in sheets0.5
Keywords in Englishstable copper nanoparticles, surface plasmons of copper, complex of europium-ethylenediaminetetraacetic acid (EuEDTA), scattered light, enhancement of fluorescence, rare earths
DOIDOI:10.1016/j.optmat.2016.03.046
URL http://dx.doi.org/10.1016/j.optmat.2016.03.046
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 30.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.238 (2) - 2016=2.209 (5)
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