Abstract
A novel ligand, N 2, N 6-bis[2-(3-methylpyridyl)]pyridine-2,6-dicarboxamide (L 2) and the corresponding Eu(III) and Tb(III) hydrochlorate complexes have been synthesized and characterized in detail based on elemental analysis, IR and NMR. The crystal and molecular structure of the complexes was determined by X-ray crystallography. The Eu(III) and Tb(III) ions were found to coordinate to the amido nitrogen atoms and pyridine nitrogen atoms. The luminescence properties of lanthanide complexes in solid state, in different solutions and in different pH value were investigated. The result shows that Tb(III) complexes exhibit more efficient luminescence than Eu(III) complexes, and the ligand (L 2) is an excellent sensitizer to Tb(III) ion.
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More From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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