Enhancement of the luminescence of complexes of Tb3+ with pyrazole derivatives by elimination of intra-and intermolecular energy losses

The possibility of simultaneous elimination of intra-and intermolecular energy losses was investigated by the example of complexes of Tb3+ with pyrazole derivatives—pyrazolones-5 and pyrazole-5-carboxylic acids. Intramolecular energy losses were eliminated by adding a solvent with a high donor number (dimethyl sulfoxide (50 vol %), and intermolecular energy losses, by sorbing complexes on a polymer matrix (polymethylmethacrylate). As a result of elimination of these energy losses, the luminescence intensity of complexes of Tb3+ with the ligands studied increased from 3.8 times to two orders of magnitude.