Obtained of chitosan films crosslinked by PEG 300 and 400 with europium 'beta'-diketonate chelate and influence to the exposition to ultraviolet radiation in the film lifetime

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dc.contributor.authorANDRADE, O.V.pt_BR
dc.contributor.authorKODAIRA, C.A.pt_BR
dc.contributor.authorTEOTONIO, E.E.S.pt_BR
dc.contributor.authorFELINTO, M.C.F.C.pt_BR
dc.contributor.authorBRITO, H.F.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL SYMPOSIUM ON IONIZING RADIATION AND POLYMERS, 8thpt_BR
dc.date.accessioned2014-11-19T10:32:16Zpt_BR
dc.date.accessioned2014-11-19T14:09:55Zpt_BR
dc.date.accessioned2015-04-01T12:47:57Z
dc.date.available2014-11-19T10:32:16Zpt_BR
dc.date.available2014-11-19T14:09:55Zpt_BR
dc.date.available2015-04-01T12:47:57Z
dc.date.eventoOctober 12-17, 2008pt_BR
dc.description.abstractLuminescent materials containing rare earth complexes with β-diketonate ligands have been intensively studied in recent years. The rare earth complexes present characteristic narrow emission bands in the UV-Vis region, large Stokes shift and the antenna effect that enhance the overall quantum efficiency, As a result, these complexes have found wide applications as luminescent markers, photoluminescent sensors, electroluminescence devices, and multicolor display. In this work, we report the luminescent properties and photostability of chitosan films doped with Eu β-diketonates complexes. The [Eu(tta)3·(H2O)2], [Eu(tta)3·(crown)2], complexes were synthesized and characterized by elemental analysis, IR and photoluminescent techniques. The polymer films were prepared by the addition of Eu3+ complexes in methanol solution and adding to chitosan/PEG and subsequent drying at 60 o C. The thermostability of the polymer systems was investigated by thermogravimetric analysis (TGA). The excitation and emission spectra of the polymeric systems were recorded at room temperature. As shown in Fig.1 the films emit red light under UV radiation of wavelength below 360 nm arising from intraconfigurational 5D0→7 FJ transitions of Eu3+. Loss in quantum yield was observed when these films are submitted to a long time UV light exposition and this phenomenon was measured
dc.identifier.citationANDRADE, O.V.; KODAIRA, C.A.; TEOTONIO, E.E.S.; FELINTO, M.C.F.C.; BRITO, H.F. Obtained of chitosan films crosslinked by PEG 300 and 400 with europium 'beta'-diketonate chelate and influence to the exposition to ultraviolet radiation in the film lifetime. In: INTERNATIONAL SYMPOSIUM ON IONIZING RADIATION AND POLYMERS, 8th, October 12-17, 2008, Angra dos Reis, RJ. <b>Abstract...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/19141.
dc.identifier.orcidhttps://orcid.org/0000-0001-7028-0878
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/19141pt_BR
dc.local.eventoAngra dos Reis, RJpt_BR
dc.rightsopenAccesspt_BR
dc.subjectpolysaccharidespt_BR
dc.subjectcross-linkingpt_BR
dc.subjectluminescencept_BR
dc.subjectdoped materialspt_BR
dc.subjecteuropiumpt_BR
dc.subjectketonespt_BR
dc.subjectultraviolet radiationpt_BR
dc.titleObtained of chitosan films crosslinked by PEG 300 and 400 with europium 'beta'-diketonate chelate and influence to the exposition to ultraviolet radiation in the film lifetimept_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorMARIA CLAUDIA FRANCA DA CUNHA FELINTO
ipen.autorCLAUDIA AKEMI KODAIRA GOES
ipen.autorALEX DE OLIVEIRA VERZOLA ANDRADE
ipen.codigoautor1103
ipen.codigoautor3969
ipen.codigoautor4005
ipen.contributor.ipenauthorMARIA CLAUDIA FRANCA DA CUNHA FELINTO
ipen.contributor.ipenauthorCLAUDIA AKEMI KODAIRA GOES
ipen.contributor.ipenauthorALEX DE OLIVEIRA VERZOLA ANDRADE
ipen.date.recebimento09-03pt_BR
ipen.event.datapadronizada2008pt_BR
ipen.identifier.ipendoc13500pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication1333caab-4e1b-4dd8-83b4-3f2013c0ce22
relation.isAuthorOfPublicationc126e7f7-c223-4380-b3eb-7ada892acb31
relation.isAuthorOfPublication99fea668-5ccf-4a66-9f1b-371c79390491
relation.isAuthorOfPublication.latestForDiscoveryc126e7f7-c223-4380-b3eb-7ada892acb31
sigepi.autor.atividadeANDRADE, O.V.:-1:-1:Spt_BR
sigepi.autor.atividadeKODAIRA, C.A.:3969:750:Npt_BR
sigepi.autor.atividadeFELINTO, M.C.F.C.:1103:750:Npt_BR
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