Eu3+-二苯甲酰甲烷、三苯基氧膦三元配合物的合成与荧光特性

Synthesis and Spectral Properties of Eu3+ Complex with Dibenzoyl Methane and Triphenylphosphine Oxide

含铕配合物在紫外光的激发下呈现出可见的较强红色特征荧光。以二苯甲酰甲烷和三苯基氧膦为混合配体,合成了Eu^3+-二苯甲酰甲烷、三苯基氧膦三元配合物(Eu(DBM)3(TPPO)2)。对配合物的合成进行了单因素实验,得到较好的合成工艺条件:以乙醇为溶剂,控制pH在6.5~7.0之间,反应时间为3小时,反应产率在78%以上,对配合物进行了氢谱、红外结构表征。配合物经紫外光谱、荧光光谱分析,表明配合物的紫外吸收特征峰出现在358 nm和274 nm;在398 nm紫外光激发下,配合物发射的波长615.4 nm特征光最强,荧光表现为红色。

Europium-containing complexes show strong red characteristic fluorescence under the excitation of ultraviolet light.Eu^3+-diphenylmethane and triphenylphosphine oxide ternary complexes(Eu(DBM)3(TPPO)2)were synthesized using diphenylmethane and triphenylphosphine oxide as mixed ligands.A single factor experiment was carried out to synthesize the complexes,and the better synthetic conditions were obtained:using ethanol as solvent,controlling the pH between 6.5 and 7.0,reaction time for 3 hours,and the yield of the complexes was over 78%.The complexes were characterized by hydrogen spectroscopy and infrared spectroscopy.The UV and fluorescence spectra of the complexes show that the characteristic peaks of the complexes appear at 358 and 274 nm.Under 398 nm UV excitation,the characteristic light emitted by the complexes is the strongest at 615.4 nm,and the fluorescence is red.