title: Studies on synthesis and infrared and fluorescence spectra of new europium and terbium complexes with an amide-based open-chain crown ether.
abstract: An amide-based open-chain crown ether ligand and its complexes with europium and terbium were synthesized. The complexes were characterized by elemental analysis, infrared spectra and conductivity. The europium and terbium ions were found to coordinate to the C=O oxygen atoms and pyridine nitrogen atoms. The fluorescence properties of these complexes in DMF and CH3OH/CHCl3 were studied. Under the excitation of UV light, these complexes exhibit characteristic fluorescence of europium and terbium ions. The solvent factors influencing the fluorescent intensity are discussed.
authors.affiliation: College of Chemistry and Chemical Engineering, Lanzhou University, People's Republic of China.
authors.forename: Yan-Ling
authors.initials: YL
authors.lastname: Zhang
authors.forename: Wen-Wu
authors.initials: WW
authors.lastname: Qin
authors.forename: Wei-Sheng
authors.initials: WS
authors.lastname: Liu
authors.forename: Min-Yun
authors.initials: MY
authors.lastname: Tan
authors.forename: Ning
authors.initials: N
authors.lastname: Tang
mesh_terms: D000577:Amides; D004988:Ethers, Cyclic; D005063:Europium; D007202:Indicators and Reagents; D008024:Ligands; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012997:Solvents; D013050:Spectrometry, Fluorescence / Q000379:methods; D013055:Spectrophotometry, Infrared / Q000379:methods; D013725:Terbium
chemical_list: D000577:Amides; D004988:Ethers, Cyclic; D007202:Indicators and Reagents; D008024:Ligands; D009942:Organometallic Compounds; D012997:Solvents; D013725:Terbium; D005063:Europium