title: Europium luminescent polymeric microspheres fabricated by spray drying process.
abstract: The spray drying method was used to prepare luminescent microspheres. These microspheres were prepared by spraying an aqueous solution of dextrin and an europium(III) complex with subsequent drying in a hot medium. The spray dried powder was characterized by scanning electron microscopy (SEM) and photoluminescence spectroscopy (PL). Particle size distribution was estimated from SEM images. The ultrasonic spray drying technique was successfully applied to yield a microparticulated and red luminescent powder composed by the [Eu(dpa)(3)](3-) (dpa = dipicolinic acid) complex incorporated in dextrin microspheres.
authors.affiliation: Department of Chemistry, FFCLRP, University of São Paulo, Avenida Bandeirantes 3900, Ribeirão Preto, SP, Brazil.
authors.forename: Priscilla Paiva
authors.initials: PP
authors.lastname: Luz
authors.forename: Ana Maria
authors.initials: AM
authors.lastname: Pires
authors.forename: Osvaldo Antonio
authors.initials: OA
authors.lastname: Serra