CLAUDIA AKEMI KODAIRA GOES
15 resultados
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Resumo IPEN-doc 14693 Sintese, caracterizacao e estudo espectroscopico do composto de GdVOsub(4) dopado com Smsup(3+)2009 - KODAIRA, CLAUDIA A.; LOURENCO, ANA V.S.; NUNES, KATIA C.; RODRIGUES, LUCAS C.V.; BRITO, HERMI F.; FELINTO, MARIA C.F.C.Resumo IPEN-doc 14453 Long lasting phosphorescence of Eusup(2+) and Dysup(3+) ions doped in barium aluminate2007 - STEFANI, ROBERVAL; RODRIGUES, LUCAS C.V.; CARVALHO, CARLOS A.A.; BRITO, HERMI F.; KODAIRA, CLAUDIA A.; FELINTO, MARIA C.F.C.Resumo IPEN-doc 16280 Persistent luminescence of barium aluminate doped with Eusup(2+) prepared by the combustion method2008 - RODRIGUES, L.C.V.; STEFANI, R.; CARVALHO, C.A.A.; BRITO, H.F.; KODAIRA, C.A.; FELINTO, M.C.F.C.; HOLSA, J.Resumo IPEN-doc 16168 Potential applications for the use of rare earth complexes and nanoparticles as luminescent biolabels2010 - FELINTO, M.C.F.C.; KODAIRA, C.A.; PAGANINI, P.P.; SANTOS, E.G.; LOURENCO, A.V.S.; BRITO, H.F.; NUNES, L.A.O.; MALTA, O.L.; SANCHES, E.; GIDLUND, M.; GOTO, H.; BRITO, M.E.F.The ever growing interest in rare earth coordination compounds and materials wilh optical properties stems from applications in multidisciplinar fields such as nanosensors, materials for telecommunications. lighting devices, and luminescent probes for bioanalyses and live cell imaging and sensing. Most of these applications use the unique ability of lhe rare earth ions to emit well-defined narrow bands in different spectral ranges, from visible to near-infrared. Due to the low absorption cross-section of the f.f transitions, efficient population of lhe excited 4f states has to rely on energy transfer from the surroundings of Ihe metal ion (antena effect or luminescence sensitization). Another point desirable is the use of RE3+ ions wilh emission in the near-infrared (NIR) region reducing !he interference from biological materials in the analyses. In this work. we report the preparation and characterization of rare earth coordination compounds and nanoparticles based on rare earth ions. RE3+ beta-diketonate complexes with macrocyclic ligand has been synthesized and characterized and are being used to mark hemoglobin S (sickle cells) Leishmania (tropical disease) and PSA (Prostate-specific antigen that is a protein produced by cells of the prostate gland. The PSA test measures the level of PSA in the blood). Several nanoparticles based on Nd3+, Eu3+ and Tb3+ ions doped into the Y2O3 matrix. are also being synthesized and evaluated for labeling anti-oxLDL (anti-oxidized low density lipoproteins), one of the principal causes of cardiovascular diseases and responsible for around 30% of deaths world-wide. information about struture and average grain size of these nanoparticles were obtained by x-ray diffration (XRDJ, transmission electron micrograph (TEM) and infrared absorption spectroscopy.Resumo IPEN-doc 17809 Luminescent hexagonal ordered mesoporous Eu:SiOsub(2)2011 - DURAES, A.S.L.; LOURENCO, A.V.; KODAIRA, C.A.; BRITO, H.F.; FANTINI, M.C.A.Resumo IPEN-doc 15388 Investigacao fotoluminescente do sistema Ysub(2)Osub(3):Tbsup(3) obtido via metodos de combustao e de Pechini2006 - KODAIRA, CLAUDIA A.; FELINTO, MARIA C.F.C.; BRITO, HERMI F. deResumo IPEN-doc 12399 Estudo fotoluminescente de SnOsub(2):Eusup(3+) preparado pelo metodo Pechini2007 - KODAIRA, CLAUDIA A.; FELINTO, MARIA C.F.C.; BRITO, HERMI F.; FALLA, PILAR H.; PERES, HENRIQUE E.Resumo IPEN-doc 12384 Orange persistent luminescence of Prsup(3+) doped in cadmium silicates2007 - RODRIGUES, L.C.V.; STEFANI, R.; KODAIRA, C.A.; FELINTO, M.C.F.C.; BRITO, H.F.Resumo IPEN-doc 12364 Blue luminescent materials containning Eusup(2+) and Dysup(3+) ions doped in barium aluminate? preparation and optical properties2007 - STEFANI, R.; RODRIGUES, L.C.V.; KODAIRA, C.A.; FELINTO, M.C.F.C.; BRITO, H.F.Resumo IPEN-doc 12374 Green luminescence of Tbsup(3+) doped in cadmium silicate2007 - STEFANI, R.; RODRIGUES, L.C.V.; KODAIRA, C.A.; FELINTO, M.C.F.C.; BRITO, H.F.