Fenilsilicato dopado com Eu III obtido pelo método sol-gel

In this work, we report the synthesis and the photoluminescence features of a Eu(III)-doped modified silica matrix obtained by the sol-gel method. The matrix was prepared by reaction between tetraethylorthosilicate and phenyltriethoxysilane alkoxide. The hydrolysis occurred using basic catalysis. The solids were treated at 100, 200 and 300 ºC during 4 h and the structure was determined by thermogravimetric analysis (TG/DTG), nuclear magnetic resonance (NMR 29Si and 13C), infrared spectroscopy (IR) and photoluminescence (PL). The PL spectra display the Eu(III) lines characteristic of the ion, 5D0 -> 7F J (J=0, 1, 2, 3, 4), the blue emission as ascribed in the silica matrix. The NMR and TG showed the stability of hybrid silica.

Bibliographic Details

Main Authors:	Nassar,Eduardo J., Ávila,Lilian R., Pereira,Paula F. S., Nassor,Evelisy C. O., Cestari,Alexandre, Ciuffi,Katia J., Calefi,Paulo Sergio
Format:	Digital revista
Language:	Portuguese
Published:	Sociedade Brasileira de Química 2007
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000700013
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