【摘要】 合成了三种含杂芴基的双β-二酮及其铕配合物。配体及配合物的红外光谱和紫外-可见吸收光谱表明配体与Eu3+发生螯合配位。配体的荧光光谱是宽的蓝色发光谱带,属H2L*→H2L跃迁。配合物荧光光谱最佳激发波长在400～420 nm之间,且以611 nm处Eu3+的特征红光为主,半峰宽10 nm左右,单色性好。热重-差热分析分析表明配合物具有较好的热稳定性,可作为一种潜在的红光材料。更多还原

【Abstract】 Three bis(β-diketones) with heterofluorene group were synthesized from dibenzothiophene and dibenzofuran.Their Eu3+complexes were synthesized and characterized by IR spectrometer,UV-Visible spectrometer,TG-DTA and photoluminescence(PL).According to luminescence spectra of complexes and ligands,the sharp and strong red emission peak at 611 nm was attributed to5D0→7F2transition from Eu3+ion and the 450 nm wide blue band can be assigned to H2L*→H2L of ligands.The results of TG-DTA of complexes showed that these complexes have good thermal stability and would be a promising red light material.更多还原