【摘要】 首次合成了以2,4,6-三吡啶基三嗪(TPTZ)为配体,以钐、铕、铽和镝为中心的稀土配合物。经元素分析、红外光谱和摩尔电导率测试表明,配合物的组成为RE(TPTZ)2.(ClO4)3(RE=Sm,Eu,Tb,Dy),稀土离子与2个TPTZ的6个氮原子和1个高氯酸根离子配位,另2个高氯酸根离子在外界未参与配位。荧光光谱的测试表明,Tb3+配合物具有较强的特征荧光发射,位于490.4nm的5D4→7F6跃迁很强,接近5D4→7F5跃迁。更多还原

【Abstract】 Four solid coordination compounds of rare earth(Sm3+,Eu3+,Tb3+,Dy3+) with 2,4,6-tri(2-pyridyl)-1,3,5-triazine(TPTZ) have been synthesized.Their elemental analysis,rare earth complexometric titration,molar conductivity and IR spectra have been studied.The results suggest that the composition of the complexes are RE(TPTZ)2·(ClO4)3.In these complexes,rare earth ion is coordinated with six nitrogen atoms of two TPTZ which acts as a tridentate ligand and one perchloric acid.The fluorescence spectra of the complexes are determined at room temperature,the data of terbium complex is the best.The fluorescence intensity of terbium complex is determined by the optimum excitation wavelength 353nm(the exbandpass and embandpass are all 3nm).It shows that the lowest excitation state energy level of Tb3+ with the triplet state energy level of the ligand(TPTZ) match well each other.The absorbing energy of the ligand is effectively transferred to Tb3+.更多还原