Study on Fluorescence Properties of Eu(Ⅲ) Cryptates  

作　　者：陈秋云 刘青山 郑和根 

机构地区：[1]Department of Chemistry [2]State Key Laboratory of Coordination Chemistry

出　　处：《Journal of Rare Earths》2003年第4期419-423,共5页稀土学报（英文版）

基　　金：ProjectsupportedbytheNationalScienceFoundationofAnhuiProvinceandtheStateKeyLaboratoryofRareEarthMaterialChemistryandApplication,PekingUniversity (2 0 0 2KJ2 96ZD)

摘　　要：The mononuclear cryptate [Eu(H 3L F)(NO 3)(H 2O)](NO 3) 2 and the heterodinuclear cryptate [EuZnL F(DMF)](ClO 4) 2 were synthesized and characterized. The triplet state energy of the cryptand (H 3L F) was studied by phosphorescence spectrum. The fluorescent properties of Eu(Ⅲ) cryptates in MeOH solution show that the cryptand (H 3L F) 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).The mononuclear cryptate [Eu(H 3L F)(NO 3)(H 2O)](NO 3) 2 and the heterodinuclear cryptate [EuZnL F(DMF)](ClO 4) 2 were synthesized and characterized. The triplet state energy of the cryptand (H 3L F) was studied by phosphorescence spectrum. The fluorescent properties of Eu(Ⅲ) cryptates in MeOH solution show that the cryptand (H 3L F) 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).

关 键 词：optics Eu(Ⅲ) Zn(Ⅱ) heterodinuclear cryptate FLUORESCENCE rare earths 

分 类 号：O657.3[理学—分析化学]