摘要
在无水乙醇溶液中分别合成了Ｅｕ３＋离子、Ｔｂ３＋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，Ｅｕ３＋离子在Ｅｕ（Ｄｉｐｙ）２Ｃｌ３·２Ｈ２Ｏ和Ｅｕ（Ｐｈｅｎ）２Ｃｌ３·２Ｈ２Ｏ配合物中处于Ｃ１或Ｃ２或ＣＳ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) 2Cl 3·2H 2O and Eu(Dipy) 2Cl 3·2H 2O is C 1 or C 2 or C S.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1998年第1期60-65,共6页
Chinese Journal of Luminescence
基金
国家自然科学基金
关键词
稀土有机配合物
荧光性质
合成
含氮杂环
complexes of rare earths, fluorescence properties, site symmetry
