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本文合成了铕(Ⅲ)与五种β-二酮(乙酰丙酮Acac、苯甲酰丙酮BA、二苯甲酰甲烷DBM、三氟乙酰丙酮TFA和噻吩甲烷三氟丙酮TTA)和碱(邻菲罗啉phen、哌啶pip、NaOH)的十三种固体三元配合物,其组成为Euβ_3·phen或C~+[Ruβ_4]~-,(C~+=Hpip~+或Na~+)测定了它们的红外、紫外和荧光光谱,观察到当第二配体相同时,随着β-二酮分子中的甲基被苯基、三氟甲基或噻吩基取代时,其配合物的相对荧光强度增大,第二配体的性质与影响配合物的相对荧光强度,表明分子中离域π键范围的大小和含该键平面的刚性是影响其荧光性质的重要因素。
In this paper, the synthesis of europium (Ⅲ) with five kinds of β-diketone (acetylacetonate Acac, benzoylacetone BA, dibenzoylmethane DBM, trifluoroacetylacetone TFA and thiophene methane trifluoroacetone TTA) and alkali (Phenothiazine phen, piperidine pip, NaOH), and its composition is Euβ_3 · phen or C ~ + [Ruβ_4] ~ - (C ~ + = Hpip ~ + or Na ~ +) Their IR, UV and fluorescence spectra were observed. It is observed that when the second ligand is identical, as the methyl group in the beta-diketone molecule is substituted with phenyl, trifluoromethyl or thienyl, the relative The increase of the fluorescence intensity, the nature of the second ligand and the relative fluorescence intensity of the complex indicate that the size of the delocalized π bond in the molecule and the rigidity of the plane containing the bond are important factors affecting the fluorescence properties.