【摘要】 在无水乙醇溶液中合成了铕/钬-苯甲酸(BA)-邻菲罗啉(Phen)混合稀土配合物,通过元素分析、红外光谱、摩尔电导等实验,确定配合物化学组成为RE(BA)3Phen(RE=Eu3+/Ho3+)。在310 nm紫外光激发下,研究了稀土配合物的荧光光谱。结果表明,铕和钬之间存在相互作用,钬对铕具有显著的敏化作用,这些混合配合物可以发出强度更高的红色荧光。当配合物中铕与钬物质的量之比为1∶1时,其荧光发射强度约为未引入钬时的2.2倍。更多还原

【Abstract】 The mixed RE complexes of Eu3+-Ho3+-phenanthroline-benzoic acid were synthesized in anhydrous ethanol.The composition of the RE complex was determined to be RE(BA)3 Phen(RE=Eu3+/Ho3+)by elemental analysis,IR and molar conductivity.The fluorescence characteristics of mixed complexes were investigated under 310 nm UV-light.The results showed that there was intensive interaction between europium ion and holmium ion,and the fluorescence emission intensity of europium ion was greatly sensitized by holmium ion.The red fluorescence of europium ion was emitted intensively in the mixed complexes.The fluorescence intensity of the complex in which n(Eu3+)∶n(Ho3+)=1∶1 was 2.2 times of the complex without Ho3+更多还原