title: Investigations into the synthesis and fluorescence properties of Eu(III), Tb(III), Sm(III) and Gd(III) complexes of a novel bis-beta-diketone-type ligand.
abstract: A novel bis-beta-diketon ligand, 1,1'-(2,6-bispyridyl)bis-3-phenyl-1,3-propane-dione (L), was designed and synthesized and its complexes with Eu(III), Tb(III), Sm(III) and Gd(III) ions were successfully prepared. The ligand and the corresponding metal complexes were characterized by elemental analysis, and infrared, mass and proton nuclear magnetic resonance spectroscopy. Analysis of the IR spectra suggested that each of the lanthanide metal ions coordinated to the ligand via the carbonyl oxygen atoms and the nitrogen atom of the pyridine ring. The fluorescence properties of these complexes in solid state were investigated and it was discovered that all of the lanthanide ions could be sensitized by the ligand (L) to some extent. In particular, the Tb(III) complex was an excellent green-emitter and would be a potential candidate material for applications in organic light-emitting devices (OLEDs) and medical diagnosis.
authors.affiliation: School of Chemistry and Chemical Engineering, Central South University, Hunan 410083, PR China. ymluo@mail.csu.edu.cn
authors.forename: Yi-Ming
authors.initials: YM
authors.lastname: Luo
authors.forename: Zhe
authors.initials: Z
authors.lastname: Chen
authors.forename: Rui-Ren
authors.initials: RR
authors.lastname: Tang
authors.forename: Lin-Xiang
authors.initials: LX
authors.lastname: Xiao
authors.forename: Hong-Jian
authors.initials: HJ
authors.lastname: Peng
mesh_terms: D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D007659:Ketones / Q000737:chemistry*; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared
chemical_list: D005456:Fluorescent Dyes; D007659:Ketones; D028581:Lanthanoid Series Elements; D008024:Ligands