Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2131.

• Articles • Previous Articles     Next Articles

Synthesis, Characterization and Near-infrared Photoluminescence of Ytterbium(Ⅲ) Monoporphyrinate Complexes

FU Shi-Tao1,2,3, ZHANG Zhi2, YU Kai-Chao1, WONG Wai-Kwok3, LI Zao-Ying2*   

  1. 1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China;
    3. Department of Chemistry, Hong Kong Baptist University, Hong Kong, China
  • Received:2008-12-08 Online:2009-11-10 Published:2009-11-10
  • Contact: LI Zao-Ying. E-mail: zyliwuc@whu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20672082)和华中科技大学博士后科学基金(批准号: 20070051)资助.

Abstract:

A series of ytterbium(Ⅲ) monoporphyrinate complexes(2a—2e), bearing different substituents on meso- or β- position, were synthesized and characterized via UV-Vis, 1H NMR, high-resolution mass spectra and elemental analysis. The photoluminescent properties of the complexes, especially in the near-infrared region, were studied in detail. Related quantum yield and fluorescence lifetime show that the energy is transferred to the excited state of ytterbium(Ⅲ) ion caused by excitation of the ππ* transitions of porphyrinate, which led to strong NIR emission. The light-emitting efficiency of the complexes with electron-donating substi-tuents on meso-position is better than that of complexes with electron-withdrawing substituents, while the complex with bromide on β-position possesses the poor ability of light-emitting.

Key words: Synthesis of Ytterbium(Ⅲ) monoporphyrinate complex; Structure characterization; Near-infrared spectrum

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