LUMINESCENCE IN COMPLEXES OF EUROPE WITH LIGAND OFLOXACIN BASED

This study presents the first comprehensive investigation of the luminescent properties of europium(III) complexes with ofloxacin (OF). Optimal conditions for the formation of stable luminescent complexes, including pH and reagent concentrations, were determined. It was established that in the presence of ofloxacin, intense sensitized luminescence of Eu³⁺ ions is observed, caused by efficient energy transfer from the ligand to the central ion. A system- atic study of the influence of f- and d-element ions on the luminescent characteristics of the system was conducted, enabling an assessment of its selectivity and stability against interfering influences. The results of the work are of fundamental importance for understanding the processes of complex formation and energetic interactions of lanthanides in microheterogeneous environments, as well as of practical prospects for the development of new luminescent probes and analytical methods based on sensitized fluorescence of europium.

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