| Influence of bidentate structure of an aryl phosphine oxide ligand on photophysical properties of its Eu~Ⅲ complex |
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| 引用本文： | 许辉,魏莹,赵保敏,黄维.Influence of bidentate structure of an aryl phosphine oxide ligand on photophysical properties of its Eu~Ⅲ complex[J].中国稀土学报(英文版),2010(5). |
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| 作者姓名： | 许辉 魏莹 赵保敏 黄维 |
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| 作者单位： | Key Laboratory of Functional Inorganic Material Chemistry of Ministry of Education School of Chemistry and Materials and School of Electrical and Mechanical En-gineering Heilongjiang University Laboratory of Advanced Materials （LAM） Fudan University Institute of Advanced Materials （IAM） Jiangsu Key Laboratory of Organic Electronics and Flat-Panel Displays Nanjing University of Posts and Telecommunications |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (90406021, 50903028);; Science and Technology Bureau of Heilongjiang Province (QC08C10) |
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| 摘 要： | The bidentate phosphine oxide ligand 1,8-bis(diphenylphosphino) naphthalene oxide (NAPO) and its EuⅢ complex 1 Eu(TTA)3(NAPO) (TTA=2-thenoyltrifluoroacetonate) were chosen to study the effect of bidentate phosphine oxide ligand on the photophysical properties of the corresponding complex. The intramolecular energy transfer processes of 1 were studied. The investigation showed that with bidentate structure NAPO could suppress solvent-induced quenching by enforcing the ligand-ligand interaction and the rigidity of the complex. Contrasted with the monodentate triphenylphosphine oxide (TPPO), NAPO had a higher first triplet excited energy level (T1) and a lower first singlet excited energy level (S1), which fitted to the corresponding excited energy levels of anion ligand TTA much more and supported more efficient singlet and triplet energy transfer in its EuIII complex.
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