IR luminescence of neodymium(III) and ytterbium(III) complexes with acylpyrazolones in solutions

• Published in: Russian journal of inorganic chemistry Vol. 56; no. 6; pp. 899 - 905
• Main Authors: Meshkova, S. B., Matiichuk, V. S., Potopnyk, M. A., Topilova, Z. M., Gorodnyuk, V. P., Olenich, K. N., Bol’bot, I. V.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-06-2011
• Subjects: Aqueous solutions; Chemistry; Chemistry and Materials Science; Complexation; Coordination Compounds; Infrared radiation; Inorganic Chemistry; Ligands; Luminescence; Oxides; Solvents; Ytterbium; Luminescence Intensity; Phen; Neodymium; Ytterbium; Mixed Ligand Complex
• ISSN: 0036-0236; 1531-8613
• DOI: 10.1134/S0036023611060179

Acylpyrazolones (L1–L5) have been synthesized and the conditions of their complexation with neodymium(III) and ytterbium(III) ions in aqueous solutions have been elucidated. The component ratio in the synthesized complexes is Nd(Yb): L = 1: 1. The conditions of excitation and luminescence of the ligands and complexes have been studied. The formation of mixed-ligand complexes upon the introduction of trioctyl- or triphenylphosphine oxide leads to a considerable rise of neodymium and ytterbium. In the presence of 1,10-phenanthroline and bathophenanthroline, competing complexation leads to a 20–70% decrease in luminescence intensity. The introduction of water-miscible organic solvents (30 vol %) decreases the Nd(III) and Yb(III) luminescence intensity by a factor of 9–20.