| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a complex of rare-earth elements of general formula [Ln(L)]M, where Ln is an ion of a trivalent rare-earth element, e.g., Nd, Pr, Sm, Eu, Tb, Dy, Ho, Tm, Er, Yb; Lis a diketonate ligand which is a derivative of 1,3-dipyrazolyl propanediol-1,3 of general formulawhere R, Rdenote an alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, R, Rdenote a hydrogen atom, alkyl, fluoroalkyl, aryl, cycloalkyl or heterocyclic substitute, a halogen atom, a CFor NOgroup, wherein conjugation of the diketone fragment can be carried out symmetrically or asymmetrically at position 3, 4 or 5 of each pyrazole ring, Mis a monovalent cation of an alkali metal, e.g., Li, K, Na, Rb, Cs, an NH?ion, a residue of a quaternary ammonium base, e.g.,N(Me),N(Et),N(Bu), a pyridinium cation or a secondary amine cation, e.g., piperidinium or pyrrolidinium, or a tertiary amine, e.g., triethylammonium or trimethylammonium. There is also methed of producing complex.EFFECT: complexes have high luminescence intensity and can be used in electro-optical devices.2 cl, 3 dwg, 9 ex |
