Fases sólidas luminescentes contendo íons lantanídeos : uma proposta para determinação de ácido siálico.

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

27/02/2012

RESUMO

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 complexes containing sialic acid as ligand. These compounds were characterized via luminescence spectroscopy, infrared spectroscopy, thermal analysis and elemental analysis. Two routes were used to obtain functionalized silica with thenoyltrifluoracetonate. The elemental analysis and infrared spectroscopy data suggest the minimum structures proposed. The europium complex with sialic acid showed weak luminescence, which was expected due to even have low molar extinction coefficient. The solid phase synthesized consisting of silica coordinated to europium complex with thenoyltrifluoracetonate was sensitive to sialic acid.

ASSUNTO(S)

espectroscopia de luminescência sílica organofuncionalizada processo sol-gel Ácido siálico quimica luminescence spectroscopy organofunctionalized silica sol-gel process sialic acid

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