title: Fluorescence emission mechanism and fluorescence properties of ternary Tb(III) complex with diphenyl sulphoxide and bipyridine.
abstract: A novel ternary complex, TbL(5) L'(ClO(4))(3) · 3H(2)O, two binary complexes, TbL(7) (ClO(4))(3) · 3H(2)O and TbL'(3.5) (ClO(4))(3) · 4H(2)O has been synthesized (using diphenyl sulphoxide as the first ligand L, bipyridine as the second ligand L'). Their composition was analysed by element analysis, coordination titration, IR spectra and (1) H-NMR, and the fluorescence emission mechanism, fluorescence intensities and phosphorescence spectra were also investigated by comparison. It was shown that the ternary rare-earth complex showed stronger fluorescence intensities than the binary rare-earth complexes in such material. The strongest characteristic fluorescence emission intensity of the ternary system was 8.23 times, 3.58 times as strong as that of the binary systems TbL(7) (ClO(4))(3) · 3H(2)O and TbL'(3.5) (ClO(4))(3) · 4H(2)O, respectively. By fluorescence analysis it was found that both diphenyl sulphoxide and bipyridine could sensitize the fluorescence intensities of rare-earth ions. In particular, in the ternary rare-earth complex, introduction of bipyridine was of benefit to the fluorescence properties of Tb(III).
authors.affiliation: College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, People's Republic of China. nmglwx@163.com
authors.forename: Wen-Xian
authors.initials: WX
authors.lastname: Li
authors.forename: Yu-Shan
authors.initials: YS
authors.lastname: Zheng
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Chai
authors.forename: Tie
authors.initials: T
authors.lastname: Ren
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Li
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Sun
authors.forename: Gao-Wa
authors.initials: GW
authors.lastname: Xing
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013725:Terbium / Q000737:chemistry*
chemical_list: D001555:Benzene Derivatives; D011725:Pyridines; D013725:Terbium; C048860:diphenyl sulfoxide