Europium Complexes
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Synthesis, Characterization, and Application of Europium(III) Complexes as Luminescent Markers of Banknotes
In this work, three complexes were synthesized from the trivalent europium ion (EuIII), using the picrate anion (pic), and delta-valerolactam (DVL), epsilon-caprolactam (EPK), and oenantholactam (OEN). The synthesized complexes [Eu(pic)3·(DVL)3], [Eu(pic)3·(EPK)3], and [Eu(pic)3·(OEN)3] were studied as luminescent markers for application as security eleme
J. Braz. Chem. Soc.. Publicado em: 2021-05
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2. Preparation and Luminescence Properties of Europium(III) Ternary Complex-modified Poplar Wood-based Materials
Inspired by the ultraviolet induced properties of biological materials, we developed fluorescent wood as a new type of functional material which can be applied to anti-counterfeit label technology and wood-emitting artwork. This study discusses the influence of temperature, time, ligand ratio, and reactant concentration on the structure and properties of flu
Mat. Res.. Publicado em: 23/09/2019
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3. Development and characterization of the amidoxime/Europium (ІІІ)-chelated complex fibers
This paper presents a study of the amidoxime/Europium (ІІІ)-chelated complex (AECC) fibers which can be used as functional fibers for technical textiles such as decorations, protections and medical textiles etc. First, the EuCl3solution were prepared and reacted with amidoxime fibers using optimized process conditions at 50 °C, 5 hours. Subsequently, the
Matéria (Rio J.). Publicado em: 2014-12
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4. Fases sólidas luminescentes contendo íons lantanídeos : uma proposta para determinação de ácido siálico.
The organofunctionalized silica was used as the solid support in the study of photophysical properties of lanthanides, in particular the Eu (III) ions, which functions as structural probe has been thoroughly discussed seeking new technological applications. In this study, were synthesized two novel organofunctionalized silica matrices and new lanthanide comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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5. Síntese, caracterização e estudo das propriedades fotoluminescente de complexos de európio com ligantes 2-Acilindan-1,3-Dionatos e Heteroaromáticos
O presente trabalho retrata a síntese, caracterização e o estudo das propriedades fotoluminescentes de complexos de európio(III) com ligantes tris-(2-acilindan-1,3-dionatos) (ACIND = 2-acetilindan-1,3-diona; BIND = 2-benzoilindan-1,3-diona; e PROPIND = 2-propionoilindan-1,3-diona) e heteroaromáticos auxiliares N coordenantes (bipy = 2,2‟-bipiridin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2011
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6. Estudo fotoluminescente de filmes de policarbonato(PC) e poli(9- vinicarbazol) (PVK) dopados com complexo de európio / Photoluminescent study of polycarbonate (PC) and poly(9-vinylcarbazole) (PVK) doped films with europium complex
Polímeros dopados com complexos de terras raras são materiais vantajosos na produção de filmes para várias aplicações no campo da luminescência. Neste estudo de polímeros luminescentes obtidos a partir de polímeros como o policarbonato (PC) e o poli(9-vinilcarbazol) (PVK), os filmes dopados com o complexo diaquatris (tenoiltrifluoroacetonato) de eu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2010
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7. Estudos das propriedades ópticas dos complexos európio tetraciclinas e suas aplicações na detecção de lipoproteínas / Studies of optical properties of complexes europium tetracycline and its applications in detection of lipoproteins
This work presents the optical properties of europium complexes - Tetracyclines (EuTcs) in the presence of LDL and oxidized LDL with potential applications in clinical analysis. Four elements were chosen from the Tetracyclines family: Tetracycline (Tc), Chlortetracycline (CTc), Metatetraciclina (MTc) and Oxytetracycline (OTc) to be part of complexes with eur
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2010
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8. Estudos espectroscópicos dos complexos európio-tetraciclinas e suas aplicações na detecção de peróxido de hidrogênio e peróxido de uréia / Spectroscopic studies of europium-tetracyclines complexes and their applications in detection of hydrogen peroxide and urea peroxide
Neste trabalho foram estudadas as propriedades espectroscópicas do íon európio trivalente complexado à componentes da família das tetraciclinas, a clorotetraciclina, oxitetraciclina e metaciclina, em presença de peróxido de hidrogênio e peróxido de uréia. Para isso foram obtidos os parâmetros ópticos de absorção, emissão, tempo de vida e const
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/06/2010
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9. ESTUDO DAS PROPRIEDADES ELETROLUMINESCENTES DE NOVOS COMPLEXOS TETRAKIS BETA-DICETONATOS DE EURÓPIO UTILIZADOS EM OLEDS / INVESTIGATION ON ELECTROLUMINESCENT PROPERTIES OF NOVEL TETRAKIS BETA-DIKETONATE COMPLEXES USED IN OLEDS
Rare-earth complexes present extremely sharp line emission making possible to use them in organic light-emitting devices (OLEDs) technology. This dissertation reports the study of three europium tetrakis beta-diketonate complexes: Li[Eu(dbm)(4)].(4)H(2)O, TMPip[Eu(dbm)(4)] and Morf[Eu(dbm)(4)]. UV-Vis absorption, photoluminescence (PL) and cyclic voltammetry
Publicado em: 2010
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10. SPECTROSCOPIC CHARACTERIZATION OF HYPOCRELLIN B: LANTHANIDE COMPLEXES FOR USE IN PHOTODYNAMIC THERAPY / Caracterização espectroscópica de complexos hipocrelina B: lantanídeos para uso em terapia fotodinâmica
A study about the optical properties of the chromophore hypocrellin B (HB) and of its complexes with lanthanum (La3+), europium (Eu3+) and terbium (Tb3+) ions in ethanol solutions was realized. This pigment is a potential second generation photosensitizer due to its great properties, as high in vivo metabolism and mainly high singlet oxygen generation quantu
Publicado em: 2009
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11. Sparkle/PM3 for the modeling of europium(III), gadolinium(III), and terbium(III) complexes
O modelo Sparkle/PM3 é parametrizado para complexos de európio (III), gadolínio (III) e térbio (III). A validação do modelo foi realizada utilizando noventa e seis complexos de Eu(III), setenta complexos de Gd(III) e quarenta e dois complexos de Tb(III); todos a partir de estruturas cristalográficas de alta qualidade, com fator R < 5%. Os erros médio
Journal of the Brazilian Chemical Society. Publicado em: 2009
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12. Estudos sobre interações da 2,3,5,6-tetra(-piridil)pirazina (tppz) com európio e efeitos na luminescência do complexo Eu(ttfa)3 / Studies on the interactions of 2,3,5,6-tetra(-pyridyl)pyrazine (tppz) with europium and effects on the luminescence of the Eu(ttfa)3 complex.
In this work, we have conducted studies on the interactions of 2,3,5,6-tetra(-pyridyl)pyrazine (tppz) with Eu3+ in different situations. In the first of them, we have made a detailed study on the ongoing interactions in solution between tris(thenoiltrifluoroacetonate)europium(III), Eu(ttfa)3 and tppz, where it was verified that tppz act as a luminescence sup
Publicado em: 2008