Abstract
This research Project included in a cooperative action among the IQ-UNESP, the Depto de Física (USP, campus de São Carlos), the Depto de Química da FFCLRP-USP (campus de Ribeirão Preto) and the Depto. de Química do IST-UTL (Lisboa, Portugal) aims the preparation and characterization of nanoparticulate systrems containing lanthanide ions. The optical properties will be explored towards the…