稀土(Eu³⁺、Tb³⁺)含氮杂环配合物的合成、表征及其荧光性质

稀土(Eu 3+ 、Tb 3+ )含氮杂环配合物的合成、表征及其荧光性质 SYNTHESIS,CHARACTERIZATION AND FLUORESCENCE OF Eu 3+ ,Tb 3+ COMPLEXES WITH HETEROCYCLIC LIGANDS CONTAINING NITROGEN 钱国栋 2 first-author 王民权 2 吕少哲 1 黄世华 1 中国科学院激发态物理开放研究实验室, 长春 130021 中国科学院激发态物理开放研究实验室, 长春 130021 Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun 130021 Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun 130021 浙江大学材料科学与工程系 杭州,310027 浙江大学材料科学与工程系 杭州,310027 Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 在无水乙醇溶液中分别合成了Eu 3+ 离子、Tb 3+ 离子与2,2'-联吡啶(Dipy)、1,10-邻菲罗啉(Phen)的四种配合物,研究了配合物的荧光性质.由于Phen含有较大范围的共轭π键和较好的刚性平面,含Phen配合物的荧光强度均要比含Dipy配合物的强;配合物的高分辨荧光光谱表明,Eu 3+ 离子在Eu(Dipy) 2 Cl 3 ·2H 2 O和Eu(Phen) 2 Cl 3 ·2H 2 O配合物中处于C 1 或C 2 或C S 的对称性位置. Four complexes of Eu 3+ and Tb 3+ ions with 2,2'-dipyridyl (Dipy) and 1,10-phenanthroline (Phen) were synthesized in the absolute ethanol solutions,and the fluorescence properties of the complexes were studied.With respect to Dipy,Phen has higher electron density in the conjugated system with the result of a higher orbital overlap and consequently an easier transfer of energy to the rare earth ions,which make the fluorescence intensity of Phen complexes be stronger than that of Dipy complexes.Moreover,the high resolution emission spectra of Eu 3+ measured at 77K indicate that the symmetry of Eu 3+ sites in Eu(Phen) 2 Cl 3 ·2H 2 O and Eu(Dipy) 2 Cl 3 ·2H 2 O is C 1 or C 2 or C S . 稀土有机配合物 荧光性质 格位对称性 complexes of rare earths fluorescence properties site symmetry 国家自然科学基金 1997-08-19 1998-02-28 2020-08-11 1 19