Synthesis, Characterization and Fluorescence Studies on Complexes of Terbium with Phenylglyoxylic Acid, 2,2-Dipyridine, 1,10-Phenanthroline, Triphenyl Phosphine Oxide  

作　　者：Zhang Yanhui Sun Bo Pei Juan Geng Xiaotian Wang Yunyou Yan Jianbo 

机构地区：[1]Departmerit of Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China [2]China Dankong Industry and Trade Group Company, Taizhou 318000, China

出　　处：《Journal of Rare Earths》2005年第5期606-606,共1页稀土学报（英文版）

摘　　要：Three new complexes TbL3dipy （H2O）2, TbL3phen （ H2O ）2 and TbL2 （ TPPO ）2NO3 have been synthesized （L = phenylglyoxylate ion, dipy = 2, 2- dipyfidine, phen = 1,10-phenanthroline, TPPO = Triphenyl phosphine oxide ）. Elemental analysis, conductivity, IR spectra and ^1HNMR spectra studies were performed on them. IR spectra indicate that carboxylate ions in the phenylglyoxylate are coordinated to Tb （Ⅲ） ions as unidentate ligands. In ^1HNMR, the signals of hydrogens in phenylglyoxylate shift upfield. The excitation and emission spectra of the three comolexes were recorded at room temoerature, the excitation spectra show that the optimum excitation wavelengths are 361.0, 359.0 and 367.0 nm, respectively. Four emission bands due to ^5D4-^7Fj （j = 6, 5, 4, 3 ） transitions were observed for TbLadipy （ H2O ）2 （489.0, 545. 0, 584.0,620.0 nm） and TbL3phen （H2O）2 （490. , 544.0, 583.0, 620.0 nm）. And under the same conditions, only one emission band due to ^5Da-^7F5 transition was observed for TbL2 （TPPO）ENO3. The emission intensity of TbLadipy （H2O）2 is the strongest among the three complexes.Three new complexes TbL3dipy （H2O）2, TbL3phen （ H2O ）2 and TbL2 （ TPPO ）2NO3 have been synthesized （L = phenylglyoxylate ion, dipy = 2, 2- dipyfidine, phen = 1,10-phenanthroline, TPPO = Triphenyl phosphine oxide ）. Elemental analysis, conductivity, IR spectra and ^1HNMR spectra studies were performed on them. IR spectra indicate that carboxylate ions in the phenylglyoxylate are coordinated to Tb （Ⅲ） ions as unidentate ligands. In ^1HNMR, the signals of hydrogens in phenylglyoxylate shift upfield. The excitation and emission spectra of the three comolexes were recorded at room temoerature, the excitation spectra show that the optimum excitation wavelengths are 361.0, 359.0 and 367.0 nm, respectively. Four emission bands due to ^5D4-^7Fj （j = 6, 5, 4, 3 ） transitions were observed for TbLadipy （ H2O ）2 （489.0, 545. 0, 584.0,620.0 nm） and TbL3phen （H2O）2 （490. , 544.0, 583.0, 620.0 nm）. And under the same conditions, only one emission band due to ^5Da-^7F5 transition was observed for TbL2 （TPPO）ENO3. The emission intensity of TbLadipy （H2O）2 is the strongest among the three complexes.

关 键 词：TERBIUM COMPLEXES phenylglyoxylic acid IR spectra fluorescence spectra rare earths 

分 类 号：O614.341[理学—无机化学]