Journal of Fluorescence

, Volume 18, Issue 2, pp 329–337 | Cite as

Tripolyphosphate as Precursor for REPO4:Eu3+ (RE = Y, La, Gd) by a Polymeric Method

Original Paper


A modification of the Pechini method was applied to obtain luminescent rare earth orthophosphates. The developed synthetic route is based on the ability of the tripolyphosphate anion (\({\text{P}}_3 {\text{O}}_{10}^{5 - } \)) to act both as a complexing agent and as an orthophosphate precursor. Heating of aqueous solutions containing RE3+, Eu3+, \({\text{P}}_3 {\text{O}}_{10}^{5 - } \), citric acid, and ethylene glycol led to polymeric resins. The ignition of these resins at different temperatures yielded luminescent orthophosphates. The produced nanosized phosphors (YPO4:Eu3+, (Y,Gd)PO4:Eu3+, and LaPO4:Eu3+) were analyzed by infrared and luminescence spectroscopies, X-ray diffractometry, and scanning electron microscopy.


Luminescence Rare earth Phosphates Europium Pechini 



The authors thank Dr. R.F. Silva and Dr. C.R. Neri for helpful discussions, and the Brazilian agencies CAPES, CNPq, and FAPESP for financial support.


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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Laboratório de Terras Raras, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão PretoUniversidade de São PauloRibeirão PretoBrazil

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