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Z. Naturforsch. 2014,
69b, 239 – 247
doi:10.5560/ZNB.2014-3275
Photoluminescent Tetrazolate-based Eu(III) Complexes: An Outstanding Impact of Aromatic Phosphine Oxide Co-ligands on the Photoluminescence Quantum Yields
1 Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01224 Warsaw, Poland
2 Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, P. O. Box 49, H-1525 Budapest, Hungary
3 Present address: Department of Chemistry, School of Sciences, Lovely Professional University, Jalandhar – Delhi G. T. Road (NH-1), Phagwara, Punjab, India-144411
Reprint requests to M. Pietraszkiewicz. E-mail:
mpietraszkiewicz@ichf.edu.pl
Received September 30, 2013 / published online February 17, 2014
New ternary Eu(III) 5-(2-pyridyl-1-oxide)tetrazolate complexes with phosphine oxide co-ligands have been synthesized and characterized by elemental analysis, and IR and 1H NMR spectroscopic techniques. The analytical data revealed that these complexes are mononuclear, and the central Eu(III) ion is coordinated by three oxygen and three nitrogen atoms of the tetrazolate and two oxygen atoms from the phosphine oxide ligands. The ancillary ligands increased remarkably the luminescence efficiency of the Eu(III) tetrazolate.
Key words: Europium Tetrazolates, Phosphine Oxides, Photoluminescence, Quantum Yields, Lifetime