一种双β-二酮化合物及其铕配合物的制备与表征

Preparation and characterization of a bis(β-diketonates)compound and its Eu^(3+) Complex

以4-正丁基苯乙酮和对苯二甲酸二甲酯为主要原料,通过Claisen缩合反应合成了1种具有双β-二酮结构的化合物1,4-双(4-正丁基苯基-1,3-丙二酮基)苯,并通过IR、UV、1 H-NMR对其结构进行了表征。将该双β-二酮与邻菲罗啉、稀土金属铕离子合成新的铕三元配合物,通过IR、UV、TG-DTG及荧光发射光谱对配合物结构和性能进行表征。荧光测试结果表明,室温下新型铕三元配合物在紫外光激发下表现出中心离子的特征荧光发射光谱,发射峰在612nm处,属5 D0→7F2跃迁带,峰型尖锐,单色性好,是一种性能优良的红光发光材料,具有较好的应用前景。

a compound of bis-β（diketones） structure named 1,4-bis（4-n-butyl-phenyl-1,3- propanedioneyl） was synthesized through the Claisen condensation reaction. Dimethyl terephthalate and 4-n-butyl acetophenone were used as main raw materials. The structure of this compound was characterized by IR, UV-Visible and 1H- NMR. A new ternary complex of Eu3＋ , the compound of bis（β-diketones） structure and o-phenanthroline was synthesized. The structure and properties of the complex were characterized by IR, UV-Visible, TG-DTG and fluorescence emission spectrometry. The fluorescent test result indicated that, in room temperature, the new ternary complex of Eu3＋ showed characteristic fluorescence emission spectra of the central ions under UV excitation. The Characteristic spectra was a sharp and strong red peak in 612nm which was attributed to 5D0→7F2 transition. The novel ternary complex of Eu3＋ was a good red light emitting material with potential applications. Key words bis（la-diketones）, rare earth metal, light emitting material