S Diketonates
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Investigação fotoluminescente de complexos tetrakis(β-dicetonatos) de terras raras / Photoluminescent investigation of rare earths tetrakis(β-diketonate) complexes
O presente trabalho aborda a síntese, caracterização e estudo fotoluminescente dos complexos tetrakis(β-dicetonatos) de terras raras (M)[TR(acac)4] (M+ = Li+, Na+ e K+; TR3+ = Eu3+, Gd3+, Tb3+ e Tm3+; acac- = acetilacetonato). Os dados de análise elementar evidenciam que os complexos são anidros. A espectroscopia de absorção da região do infrave
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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2. Development of luminescent systems based on PHB and PMMA polymers doped with rare earth complexes / Desenvolvimento de sistemas luminescentes à base dos polímeros PHB e PMMA dopados com complexos de terras raras
This work presents the preparation, characterization and studies of photoluminescence properties based on trivalent rare earth coordination complexes of βdiketonates and salicylates (β-diketonates = acac- and tta-; salicylates = Hsal- and RE3+ = Sm3+, Eu3+, Gd3+ and Tb3+) doped into polymers PHB (poly3hydroxybutyrate) and PMMA (polymethylmethacryla
Publicado em: 2009
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3. Photoluminescent Behaviour of tetrakis(b-diketonates) Complex Anions with Rare Earth Ions - Eu3+, Gd3+, Tb3+ e Tm3+ / Comportamento fotoluminescente dos ânions complexos tetrakis(-dicetonatos) de Íons terras raras - Eu3+ , Gd3+ , Tb3+ e Tm3+
Neste trabalho, os complexos tetrakis(ß-dicetonato) de terras-raras, (Q)[TR(β-dicetonato)4 ] {(Q = Li+ , Na+ , K+ , (Et3 NH)+ , (Morf)+ , (TMPip)+ e (Diciclo)+ ); (TR3+ = Eu3+ , Gd3+ , Tb+ e Tm3+ ) e (β-dicetonato = acac, dbm e tta), foram sintetizados, caracterizados e suas propriedades ópticas investigadas por meio de espectroscopia luminescent
Publicado em: 2007
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4. b-diketonates of Eu3+, red phosphors, supported on sol-gel functionalised silica
Silica gel was functionalised with chloropropyl groups through the sol-gel process and then a beta-diketone was incorporated into the support. Afterwards, Eu3+ ion and its chelates of 1,10-phenantroline (phen) and 2,2'-bipyridine (bpy), red phosphors, were supported on such silica. Luminescence studies of Eu3+ bound to this new material have shown that there
Materials Research. Publicado em: 2001-01