期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 70, 期 3, 页码 646-650出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2007.08.014
关键词
Tb(3+)complexes; N-phenylanthranilic acid; second ligand; luminescence
类别
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)(H2O)(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. (C) 2007 Elsevier B.V. All rights reserved.
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