高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2131.

• 研究论文 • 上一篇    下一篇

镱(Ⅲ)卟啉配合物的合成、结构表征和近红外光谱研究

付世涛1,2,3, 张智2, 俞开潮1, 黄伟国3, 李早英2   

  1. 1. 华中科技大学化学与化工学院, 武汉 430074;
     2. 武汉大学化学与分子科学学院, 武汉 430072;
    3. 香港浸会大学化学系, 香港
  • 收稿日期:2008-12-08 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 李早英, 女, 博士, 教授, 博士生导师, 主要从事卟啉化合物的合成和性能研究. E-mail: zyliwuc@whu.edu.cn
  • 基金资助:

    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.

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.

摘要:

合成了5个meso-位和β-位具有不同取代基的Yb(Ⅲ)卟啉配合物(2a~2e), 并对其结构进行了表征; 研究了配合物的可见光谱和近红外光谱性质, 测得了相关的量子产率和荧光寿命. 研究结果表明, 此类中性单核Yb(Ⅲ)卟啉配合物由于Yb3+的存在, 导致卟啉配体发生ππ*跃迁, 并将吸收的可见光能量传递给Yb3+的激发态, 使得配合物在近红外光区有很强的发光, 且meso-位为供电子基团的Yb(Ⅲ)卟啉配合物的发光效率比含吸电子基团的Yb(Ⅲ)卟啉配合物高, 而β-位溴化的Yb(Ⅲ)卟啉配合物的发光效率较差.

关键词: 镱卟啉配合物的合成; 结构表征; 近红外光谱

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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