resumo
Polymers from natural sources are particularly useful as biomaterials for medical devices applications. In this study, the results of characterization of a gelatin network electrolyte doped with europium triflate (Eu(CF3SO3)(3)) are described. The unusual electronic properties of the trivalent lanthanide ions make them well suited as luminescent reporter groups, with many applications in biotechnology. Samples of solvent-free electrolytes were prepared with a range of guest salt concentration. Materials based on Eu(CF3SO3)(3) were obtained as mechanically robust, flexible, transparent, and completely amorphous films. Samples were characterized by thermal analysis (thermo-gravimetry analysis (TGA) and differential scanning calorimetry (DSC), electrochemical stability, scanning electronmicroscopy (SEM), and photoluminescence spectroscopy.
palavras-chave
EMISSION RED-SHIFT; POLYMER ELECTROLYTES; LUMINESCENCE; CHITOSAN; FILMS; OPPORTUNITIES; HYBRIDS; CHITIN
categoria
Crystallography
autores
Ribeiro, G; Conde, M; Carvalho, J; Rodrigues, LC; Alves, R; Ferreira, RAS; Pawlicka, A; Carlos, LD; Silva, MM
nossos autores
Luís António Ferreira Martins Dias Carlos
Professor Catedrático
Maria Rute de Amorim e Sá Ferreira André
Vice-Diretoragradecimentos
The authors gratefully acknowledge the financial support provided by the University of Minho and the Fundacao para a Ciencia e Tecnologia (contracts POCTI/SFA/3/686 and SFRH/BD/38616/2007) for laboratory equipment and research staff. The authors are also indebted to CNPq and CAPES for the financial support given to this research.