【作者】 赵艳芳； 赵永亮； 白峰；

【Author】 ZHAO Yan-fang ZHAO Yong-liang~* Bai Feng (The College of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot 010021,China)

【机构】 内蒙古大学化学化工学院；

【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）-l,3,5-triazine（TPTZ）have been synthesized.Their elemental analysis,rare earth complexometric titration,molar conductive 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 3 nm）.It shows that the lowest excitation state energy level of Tb³⁺ion 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⁺ion.更多还原