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Spectroscopic properties of lanthanoid benzene carboxylates in the solid state: Part 2. Polar substituted benzoates

By Matthias Hilder, Marina Lezhnina, Marcus L. Cole, Craig M. Forsyth, Peter Junk and Ulrich H. Kynast

Abstract

Europium and terbium complexes of ortho, meta and para substituted benzoate ligands including nitrobenzoate (NBA), aminobenzoate (ABA), hydroxybenzoate (OHBA) and methoxybenzoate (MeOBA) have been synthesised by metathesis reactions, carried out in aqueous media. The complexes were characterised by elemental, compositional and structural investigations, including microanalysis, EDTA titrations, differential thermal analysis, infra red spectroscopy, X-ray powder diffraction and single crystal structural analyses. Besides this, strong emphasis was on the determination of the optoelectronic properties of the compounds in the solid state. In this regard, reflectance, excitation and emission spectra were recorded. From these, the emission and excitation efficiencies were determined. The relative intensities as well as the splitting patterns of the 5D0 → 7FJ transitions in the europium emission spectra are discussed

Publisher: Elsevier
Year: 2011
DOI identifier: 10.1016/j.jphotochem.2010.09.021
OAI identifier: oai:researchonline.jcu.edu.au:29661
Provided by: ResearchOnline@JCU
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