Terbium(III), europium(III), and gadolinium(III) coordination compounds with o-aryl benzoic acids were obtained from their sodium salts under optimal conditions. Their composition and coordination mode of carboxylate anions were determined by IR spectroscopy and complexometric titration. Luminescence quantum yields of terbium(III) and europium(III) complexes were determined. Terbium(III) complexes are promising for use in organic light-emitting diodes and light-transforming coatings.
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The authors express their gratitude to M.I. Zinchenko, Deputy Head of the Department of Separation methods of analysis of the Lumex Group of Companies, for the assistance in adapting the method for determining quantum luminescence yields to the Fluorat-02 Panorama spectrofluorimeter.
The work was carried out within the framework of the project of the state task of the Ministry of Education and Science of the Russian Federation no. 20/65t-6.
No conflict of interest was declared by the authors.
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Nikolaev, A.A., Kulyasov, A.N. & Panyushkin, V.T. Synthesis and Luminescent Properties of Terbium(III), Europium(III), and Gadolinium(III) Coordination Compounds with o-Arylbenzoic Acids. Russ J Gen Chem 90, 2498–2502 (2020). https://doi.org/10.1134/S1070363220120439
- o-arylbenzoic acids
- complex compounds
- luminescence quantum yield
- luminescent materials