Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (9): 1081-1087.DOI: 10.6023/A1112121 Previous Articles     Next Articles

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具不同官能团钌(II)邻菲啰啉配合物氧淬灭性能的比较研究

唐兰兰, 祁争健, 洪满心, 李楠, 沈伟, 杨帆, 吉昕, 胡爱江   

  1. 东南大学化学化工学院 南京 211189
  • 投稿日期:2011-12-12 修回日期:2012-02-08 发布日期:2012-05-18
  • 通讯作者: 祁争健 E-mail:qizhengjian@seu.edu.cn
  • 基金资助:

    国家自然科学基金(No. 21075015)资助项目.

Comparison Study of Oxygen Quenching of Ru(II) Phenanthroline Complexes with Different Functional Groups

Tang Lanlan, Qi Zhengjian, Hong Manxin, Li Nan, Shen Wei, Yang Fan, Ji Xin, Hu Aijiang   

  1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189
  • Received:2011-12-12 Revised:2012-02-08 Published:2012-05-18
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21075015).

Ruthenium(II) phenanthroline complexes with different functional groups: [Ru(bpy)2(phen- NO2)](PF6)2 (1), [Ru(bpy)2(phen-Br)](PF6)2 (2), [Ru(bpy)2(phen-NH2)](PF6)2 (3), [Ru(bpy)2(bphen)](PF6)2 (4) (where bpy=2,2'-bipyridyl, phen-NO2=5-nitro-phenanthroline, phen-Br=5-bromo-phenanthroline, phen-NH2=5-amino-phenanthroline, bphen=bathophenanthroline) were synthesized. They were characterized and analyzed by NMR, FTIR, elemental analysis and UV-Vis absorption and photoluminesence spectroscopy measurements, respectively. The investigations indicate that complexes 2~4 emit bright orange- red fluorescence and have intensely visible absorption in blue-purple region. Complexes 2~4 show the photophysics properties of high quantum efficiencies (Φ), long excited-state luminescence lifetime (τ), large Stocks shift (147~205 nm) and good oxygen-induced luminescence quenching properties (Ksv ≥3.5, (I0/I)max≥4.0). Among them, complex 3 grafted by an amino functional group has a Φ of 10%, a τ of 381.8 ns, a Ksv of 3.49 and the maximum I0/I factor of 4.33. However, complex 2 grafted by a bromine group shows higher Φ of 18%, longer luminescence τ of 635 ns, larger Ksv of 4.59 and the maximum I0/I factor up to 5.29. These properties make it a promising fluorescence indicator applied in grafting and high performance optics oxygen sensor.

Key words: Ru(II) complex, phenanthroline, luminophore, oxygen quenching, oxygen sensor