【摘要】 分别以1,10-邻菲咯啉、三苯基氧磷、2,2’-联吡啶为第二配体,以苯甲酰丙酮为第一配体,合成了3种铕(Ⅲ)配合物。通过红外光谱、紫外-可见光吸收光谱和荧光光谱对其性能进行了表征。初步从理论上探讨了不同的第二配体对铕(Ⅲ)配合物光致发光性能的影响,并建立了分子内能量传递模型。结果表明:配体和配合物对紫外光都有强烈吸收,所有配合物在紫外光激发下均能发射Eu3+的特征荧光;第二配体与Eu3+间的能级差以及第一配体与第二配体间的能级差都会影响铕(Ⅲ)配合物的荧光量子效率。更多还原

【Abstract】 Three types of europium complexes were synthesized by introducing benzoylacetone as the first ligand and 1,10-phenanthroline,triphenylphosphine oxide,2,2’-bipyridyl as the second ligand,respectively.The properties of above materials were characterized by infrared absorption spectra,UV-Vis absorption spectra and fluorescence spectra.Then,it was discussed that the different second ligands of europium complexes can affect their luminescence properties,and their intramolecular energy transfer models had been set up.The results indicated that ligands and complexes have a strong absorption of UV light and the three types of europium complexes exhibit characteristic luminescence of europium ion when excited by UV light.In addition,it is suggested that the fluorescence yield of europium complexes mostly depend on both the energy difference between the second ligand and the Eu3+ ion and the energy difference between the second ligand and the first ligand.更多还原