PHOSPHONIC ACID-DIKETONE COMPLEX-BASED RARE EARTH METAL COMPLEX

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PROBLEM TO BE SOLVED : To obtain a rare earth metal complex exhibiting emission of excellent monochromaticity derived from a rare earth metal ion and having excellent solubility in an organic solvent, heat resistance, fluorescence quantum yield, etc.SOLUTION : The phosphonic acid-diketone complex-based rare earth metal complex comprises a phosphonic acid ligand represented by formula (1) (A is an aromatic ring group which may be substituted with Z or the like; Z is a halogen atom or the like; R1 is a 1-10C alkoxy group or the like), a 1, 3-diketone compound ligand represented by formula (2) (R2 and R3 are each independently a 1-10C alkyl group, an aromatic hydrocarbon group which may be substituted with Z or the like) and a trivalent rare earth metal.COPYRIGHT : (C)2008, JPO&INPIT