The study on the effect and mechanism of the second ligands on the luminescence properties of terbium complexes.
The binary complex of Tb(III) with N-phenylanthranilic acid (N-HPA) was synthesized, and the ternary complexes were synthesized by introducing 1,10-phenanthroline (Phen), 2,2'-dipyridyl (Bipy), trioctylphosphine oxide (TPPO) as the second ligand, respectively. These complexes were characterized by infrared spectra, UV spectra and fluorescence spectra. The effect and mechanism of different second ligands on the fluorescent intensity of the terbium N-phenylanthranilic acid complexes was discussed. It showed that all the complexes exhibited ligand-sensitized green emission. The luminescence intensity increased in the sequence of Tb(N-PA)(3)Phen<Tb(N-PA)(3)(H(2)O)(2)<Tb(N-PA)(3)Bipy<Tb(N-PA)(3)(TPPO)(2). The second ligands TPPO and Bipy enhanced the luminescence intensity of the complexes while the Phen quenched it.
Fu
Yali
Y
Institute of Modern Catalysis, Beijing University of Chemical Technology, State Key Laboratory of Chemical Resource Engineering, Beijing 100029, China.
Zhang
Jingchang
J
Lv
Yuguang
Y
Cao
Weiliang
W
D008024:Ligands; D049449:Luminescence; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013725:Terbium / Q000737:chemistry*
D008024:Ligands; D013725:Terbium