Bueno, L. A.Bertholdo, R.Barros, D. A.Messaddeq, Younes [UNESP]Ribeiro, SJL2014-05-202014-05-202002-01-01Sol-gel Optics Vi. Bellingham: Spie-int Soc Optical Engineering, v. 4804, p. 121-129, 2002.0277-786Xhttp://hdl.handle.net/11449/38009Monodisperse spheres of silica and latex were obtained by a surfactant free styrene polimerization and the Stober method respectively. Controlling settling either by centrifugation or by dip-coating colloidal crystals could be obtained. Silica inverse opals were prepared by using the latex colloidal crystals as templates and TEOS/ethanol solution. Eu3+ containing silica spheres were obtained dispersing silica spheres in Eu(NO3)(3) isopropanol solutions. Emission spectra suggest the formation of an amorphous Eu3+ containing phase well adhered at the spheres surface. The utilization of solutions of trifluoroacetates salts of Pb2+ and Eu3+ was observed to destroy the silica spherical pattern when samples are treated at 1000degreesC. In that case nanocrystals of PbF2 and amorphous silica were obtained after heat treatment.121-129engopalsinverse opalslanthanide ionsTrabalho apresentado em evento10.1117/12.456543WOS:000180000400016Acesso aberto29985038419178156446047463034654