Photoluminescent hybrid materials based on lanthanopolyoxotungstates and 3-hydroxypicolinic acid

abstract

A series of organic-inorganic hybrid materials composed by lanthanopolyoxotungstates [Ln(W(5)O(18))(2)](n-) (Ln(III)=Eu, Tb, Er and Yb) and 3-hydroxypicolinic acid were prepared using different lanthanide ions. The compounds were characterized by FT-IR and FT-Raman spectroscopy and elemental analysis. The energy transfer processes from the organic ligand to the lanthanide (antenna effect) in these compounds have been studied by photoluminescence measurements. (C) 2007 Elsevier B.V. All rights reserved.

keywords

POLYNUCLEAR MOLYBDENUM; TUNGSTEN COMPLEXES; EUROPIUM(III)

subject category

Chemistry; Materials Science; Metallurgy & Metallurgical Engineering

authors

Granadeiro, CM; Ferreira, RAS; Soares-Santos, PCR; Carlos, LD; Nogueira, HIS

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