LUMINESCENT COMPLEXES OF RARE-EARTH ELEMENTS WITH PYRAZOLE-CONTAINING 1, 3-DIKETONES AND METHOD FOR

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FIELD : chemistry. SUBSTANCE : invention relates to a rare-earth complex of general formula [Ln(L1)3L2], where Ln is an ion of a trivalent rare-earth element, e.g., Nd, Pr, Sm, Eu, Tb, Dy, Ho, Tm, Er, Yb; L1 is a diketonate ligand, which is a 1, 3-dipyrazolyl propanediol-1, 3 derivative of general formula , where R1, R3 denote an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, R2, R4 denote a hydrogen atom, an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, a halogen atom, a CF3 or NO2 group. The diketone fragment can be conjugated symmetrically or asymmetrically at positions 3, 4 or 5 of each pyrazole ring, L2 is an auxiliary bidentate N, P or O-containing ligand, e.g., 1, 10-phenanthroline (Phen), 2, 2-bipyridyl (Bipy), triphenylphosphine oxide (TPPO), tri-n-octylphosphine oxide (TOPO), diethylene glycol dimethyl ether (Diglim). A method of producing said compound is also provided. EFFECT : invention enables to obtain novel rare-earth complexes with high luminescence intensity. 2 cl, 3 dwg, 10 ex