Study on Fluorescence Properties of Eu(Ⅲ) Cryptates
来源期刊：JOURNAL OF RARE EARTHS2003年第4期
论文作者：郑和根 陈秋云 刘青山
Key words：optics; Eu(Ⅲ); Zn(Ⅱ); heterodinuclear cryptate; fluorescence; rare earths;
Abstract: The mononuclear cryptate [Eu(H3LF)(NO3)(H2O)](NO3)2 and the heterodinuclear cryptate [EuZnLF(DMF)](ClO4)2 were synthesized and characterized. The triplet-state energy of the cryptand (H3LF) was studied by phosphorescence spectrum. The fluorescent properties of Eu(Ⅲ) cryptates in MeOH solution show that the cryptand (H3LF) can sensitize the Eu(Ⅲ) ion to luminescence and the introduction of the Zn(Ⅱ) ion into the mononuclear Eu(Ⅲ) cryptate resulted in blue-shift of three ligand-centered bands, increase of molar absorption coefficient and increase of the luminescence intensity of Eu(Ⅲ).
郑和根1，陈秋云2，刘青山2
(1.State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China;
2.Department of Chemistry, Huangshan College, Huangshan 245021, China)
Abstract:The mononuclear cryptate [Eu(H3LF)(NO3)(H2O)](NO3)2 and the heterodinuclear cryptate [EuZnLF(DMF)](ClO4)2 were synthesized and characterized. The triplet-state energy of the cryptand (H3LF) was studied by phosphorescence spectrum. The fluorescent properties of Eu(Ⅲ) cryptates in MeOH solution show that the cryptand (H3LF) can sensitize the Eu(Ⅲ) ion to luminescence and the introduction of the Zn(Ⅱ) ion into the mononuclear Eu(Ⅲ) cryptate resulted in blue-shift of three ligand-centered bands, increase of molar absorption coefficient and increase of the luminescence intensity of Eu(Ⅲ).
Key words:optics; Eu(Ⅲ); Zn(Ⅱ); heterodinuclear cryptate; fluorescence; rare earths;
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