Fluorescence emission mechanism and fluorescence properties of ternary Tb(III) complex with diphenyl sulphoxide and bipyridine |
| |
| Authors: | Wen‐Xian Li Yu‐Shan Zheng Wen‐Juan Chai Tie Ren Yu Liu Ying‐Jie Li Xiao‐Jun Sun Gao‐Wa Xing |
| |
| Institution: | 1. College of Chemistry and Chemical Engineering, Inner Mongolia University, , Hohhot, 010021 People's Republic of China;2. Inner Mongolia Autonomous Region Product Quality Supervision and Inspection Institute, , Hohhot, 010010 People's Republic of China |
| |
| Abstract: | A novel ternary complex, TbL5L′(ClO4)3·3H2O, two binary complexes, TbL7(ClO4)3·3H2O and TbL′3.5(ClO4)3·4H2O 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 1H‐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 TbL7(ClO4)3·3H2O and TbL′3.5 (ClO4)3·4H2O, 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). Copyright © 2011 John Wiley & Sons, Ltd. |
| |
| Keywords: | rare‐earth complexes fluorescence phosphorescence fluorescence emission mechanism |
|
|
