Silver nanoparticle Plasmon Effect in the luminescence of X%Ag0@7.5%Eu(tta)3.TOPO-PVP system
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2017
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INTERNATIONAL CONFERENCE ON LUMINESCENCE, 18th
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Surface Plasmon’s (SP) are known as collective oscillations of the conduction electrons
induced by incident light at a metallic interface. They attract increasing interest for their
applications to surface enhanced Raman spectroscopy (SERS), metal enhanced fluorescence
(MEF), non-linear optics (NLO), etc. In the MEF fluorophores are not covalently coupled to
the silver nanoparticles, which can facilitate the control of the fluorophores-to-metal separation,
using a polymer thin film as the spacer, to study this phenomenon. Nowadays Plasmon coupled
RE ion sistems are of great scientific significance [1-2].
In this work, the polyvinylpyrrolidone polymer, PVP, powder (0.3 g) was dissolved in
ethanol or water (50 mL) followed by the addition of the required amount (from 7.5% in mass)
of the Ln3+-complex in ethanol and added 0.1-10%(w/w) of Ag0 nanoparticles in relation of
Eu3+ mass. The mixed solution was stirred (30 minutes), then cast onto a Petri dish. The polymer
film was obtained after the total evaporation of the solvent. These films were characterized
using IR spectroscopy, XPD, TGA, TEM, absorption and photoluminescence spectroscopy.
The luminescence spectra of the films doped with Ag0 have the same profile of undoped
films, exhibiting characteristic bands assigned to 5D07FJ (J= 1-4) at 581, 596, 615 and 702
nm. The intensity parameters of the film with and without Ag0 in various concentrations of
metallic nanoparticle were determined. The only difference in these systems remaining in the
intensity of the bands of Eu3+ ion that increase in a factor of ~1000X (Fig. 1).
Como referenciar
FELINTO, MARIA C.F.C.; SOUZA, LUANA A.; BONTURIM, EVERTON; NAKAMURA, LIANA K.O.; CAMARGO, PEDRO; BRITO, HERMI F.; TEOTONIO, ERCULES E.S.; MALTA, OSCAR M.L. Silver nanoparticle Plasmon Effect in the luminescence of X%Ag0@7.5%Eu(tta)3.TOPO-PVP system. In: INTERNATIONAL CONFERENCE ON LUMINESCENCE, 18th, August 27 - September 1, 2017, João Pessoa, PB. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/27986. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.