Spectroscopic study of Eu and Tb complexes on polysiloxane tridimensional networks

• Published in: Optical materials Vol. 27; no. 6; pp. 1187 - 1189
• Main Authors: de Souza, Jucimar M., de Sá, Gilberto F., de Azevedo, Walter M., Alves, Severino, de Farias, Robson F.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-03-2005; Elsevier Science
• Subjects: Exact sciences and technology; Fundamental areas of phenomenology (including applications); Glasses, quartz; Lanthanides; Optical materials; Optics; Physics; Polysiloxane; Sol–gel glasses; Lanthanides; Sol–gel glasses; Polysiloxane; Europium additions; Terbium additions; Sol-gel glasses; Emission spectra; Luminescence; Glass; Doped materials; Experimental study; Sol-gel process; Silicones
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2004.08.080

A spectroscopic study performed on Eu(III) and Tb(III) complexes dispersed on polysiloxane sol–gel glasses is reported. The complexes tris[(4,4,4-trifluoro-1-phenilbutanedionate)(
ortho-phenanthroline-N-oxide)]europium(III): [Eu(btfa)
3-
o-phenNO]; tris[(4,4,4-trifluoro-1-phenilbutanedionate)(
ortho-phenanthroline-N-oxide)]terbium(III): [Tb(btfa)
3-
o-phenNO] and tris(2,6-pyridinecarboxylic acid)terbium(III): [Tb(DPA)
3] were employed to produce the doped sol–gel glasses. It is verified that the amount of complex employed, the complex itself, the tridimensional siloxane network, as well as the exciting radiation wavelength, can affect the color of the prepared glasses, and so, be controlled in order to produce a desired emission.