| Synthesis, Characterization and Fluorescence of Rare earth Nitrate Complexes with Triaza-crown Ether Derivative |
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| 引用本文： | 胡晓黎,崔书亚,闫兰,杨汝栋. Synthesis, Characterization and Fluorescence of Rare earth Nitrate Complexes with Triaza-crown Ether Derivative[J]. 中国稀土学报(英文版), 2003, 21(3): 395-397 |
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| 作者姓名： | 胡晓黎 崔书亚 闫兰 杨汝栋 |
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| 作者单位： | College of Chemistry and Chemical Engineering，Lanzhou University，College of Chemistry and Chemical Engineering，Lanzhou University，College of Chemistry and Chemical Engineering，Lanzhou University，College of Chemistry and Chemical Engineering，Lanzhou University Lanzhou 730000，China，Lanzhou 730000，China，Lanzhou 730000，China，Lanzhou 730000，China |
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| 基金项目： | ProjectsupportedbyNationalNaturalScienceFoundationofChina ( 2 95 710 3 )，theNationalCommittee′sDoctoralFounda tionofChina ( 95 73 0 0 5 ) |
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| 摘 要： | Sinceaza crownethershowsspecialcoordinationpropertiestotransitionmetalandheavymetalions[1,2 ] ,therearemanyreportsofthecomplexesinhost guestchemistry ,molecularrecognition[3 ,4] andionophoreinmembranetransportation[5] ,butthereislittlereportontheirrareearthscomplexesandthefluorescenceaboutthecomplexes[6] ,andthefluorescenceintensityoftheircomplexesarenotverystrong .Weinsetbenzoylgroupintothemacrocycle ,expectingthatitsrareearthscomplexeshavebetterfluorescenceproperties .Inthispaperthesynthesis…
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| 关 键 词： | 无机化学 荧光 稀土 硝酸盐 |
Synthesis, Characterization and Fluorescence of Rare earth Nitrate Complexes with Triaza-crown Ether Derivative |
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| Abstract: | Four new complexes of rare earths with a triaza-crown ether (L) derived from N3O2-macro cycle 1,12,15-triaza-3, 4: 9,10-dibenzo-5, 8-dioxacycloheptadecane were synthesized and characterized by elemental analysis, IR, molar conductance, TG-DTA analysis and fluorescence spectra. The composition of the complexes determined as [RE(NO3)3L*3H2O]*H2O (RE=Sm, Eu, Tb and Dy). It is found that Sm3+, Eu3+, Tb3+ and Dy3+ complexes all show strong fluorescence emission in the solid state. Among these complexes, Tb3+ complex has the strongest luminescence intensity. It shows that the ligand L triplet state energy matches 5D4 energy level of Tb3+. In the Eu3+ complex, η(5D0→7F2/5D0→7F1) is 2.6, which indicates that Eu3+ locates at the asymmetric coordination field. |
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| Keywords: | inorganic chemistry aza crown ether derivative rare earths nitrate fluorescence rare earth |
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