title: Synthesis, characterization of the luminescent lanthanide complexes with (Z)-4-(4-methoxyphenoxy)-4-oxobut-2-enoic acid.
abstract: (Z)-4-(4-Methoxyphenoxy)-4-oxobut-2-enoic acid and its solid rare earth complexes LnL3.2H2O (Ln=La, Eu, Tb) were synthesized and characterized by means of MS, elemental analysis, FTIR, 13C NMR and TG-DTA. The IR and 13C NMR results show that the carboxylic groups in the complexes coordinated to the rare earth ions in the form of a bidentate ligand, but the ester carboxylic groups have not taken part in the coordination. The luminescence spectra of Eu(III) and Tb(III) complexes in solid state were also studied. The strong luminescence emitting peaks at 616nm for Eu(III) and 547nm for Tb(III) can be observed, which could be attributed to the ligand has an enhanced effect to the luminescence intensity of the Eu and Tb.
authors.affiliation: College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
authors.forename: Guo-Jian
authors.initials: GJ
authors.lastname: Duan
authors.forename: Ying
authors.initials: Y
authors.lastname: Yang
authors.forename: Tong-Huan
authors.initials: TH
authors.lastname: Liu
authors.forename: Ya-Ping
authors.initials: YP
authors.lastname: Gao
mesh_terms: D002087:Butyrates / Q000138:chemical synthesis* / Q000737:chemistry; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010647:Phenyl Ethers; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013696:Temperature
chemical_list: C528387:(Z)-4-(4-methoxyphenoxy)-4-oxobut-2-enoic acid; D002087:Butyrates; D028581:Lanthanoid Series Elements; D008024:Ligands; D010647:Phenyl Ethers