Cryptates
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. DESENVOLVIMENTO DE UM NOVO MARCADOR LUMINESCENTE PARAMICROCISTINA-LR: um estudo teórico. / DEVELOPMENT OF A NEW luminescent PARAMICROCISTINA-LR: a theoretical study.
In this work we describe a theoretical study of lanthanide complexes with macrocyclic ligands. Spectroscopic properties of the cryptate [EuÌ(bipy)2py(CO2Et)2]3+.2H2O were investigated with semiempirical methodologies such as Sparkle, INDO/S-CIS, Judd- Ofelt model as well as Maltas models implemented in LUMPAC (Luminescence Package). This computational packa
Publicado em: 2010
-
2. Criptatos de lantanÃdeos derivados de Ãcidos piridina dicarboxÃlicos: modelagem, sÃntese, caracterizaÃÃo e estudo espectroscÃpico
O design e a sÃntese de ligantes macrocÃclicos e seus complexos luminescentes de lantanÃdeos (Ln) sÃo uma fascinante Ãrea de pesquisa devido a sua importÃncia em processos bÃsicos e em quÃmica aplicada. A habilidade destes ligantes em encapsular Ãons trivalentes lantanÃdeos, bem como sua singular eficiÃncia em absorver a radiaÃÃo ultravioleta, t
Publicado em: 2007
-
3. Síntese, caracterização e propriedades espectroscópicas de criptatos de lantanídeo do tipo [LnÌ(bipy)2py(CO2Et) 2(3+)]
This work reports on the synthesis, characterization (infrared and hidrogen nmr spectra) and photophysical properties (luminescence spectra and emission quantum yield) of the lanthanide cryptates [LnÌ(bipy)2py(CO2Et) 2]3+ with Ln = Eu3+, Tb3+ or Gd3+, which can be applied as efficient Light-Conversion-Molecular-Devices. From emissio
Química Nova. Publicado em: 2004-10
-
4. Novos macrociclos de lantanÃdeos: marcadores fotÃnicos projetados para aplicaÃÃes biotecnolÃgicas
The present work describes the synthesis, characterization and photophysical properties of the lanthanide cryptates [Ln⊂(bipy)2py(CO2Et)2]3+ and [Ln⊂(bipy)2py(CONHCH2CH2NH2)2]3+ with Ln3+ = Eu3+, Tb3+ and Gd3+, which are efficient light conversor molecular devices in aqueous solution. Emission spectroscopic analysis and lifetime measurements at 2
Publicado em: 2003
-
5. Relationship between transfer activity coefficients, S1γS2, of cryptate 2.2.2 complexes and their stability constant in various solvents
Between dipolar aprotic solvents S1 and S2, the transfer activity coefficients, S1γS2, of complexed sodium, potassium, thallium(I), and silver ions with cryptand 2.2.2 have been found to be equal to that of the cryptand. With reference to methanol (S1), this equality does not hold, the cryptates being more or less solvated by hydrogen bonding in this solven