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

Translated title of the contribution: Comparison Study of Oxygen Quenching of Ru(II) Phenanthroline Complexes with Different Functional Groups

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

Research output: Contribution to journalArticleResearchpeer-review

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Abstract

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.

Translated title of the contributionComparison Study of Oxygen Quenching of Ru(II) Phenanthroline Complexes with Different Functional Groups
Original languageChinese
Pages (from-to)1081-1087
Number of pages7
JournalActa Chimica Sinica
Volume70
Issue number9
DOIs
Publication statusPublished - 28 Mar 2012
Externally publishedYes

Keywords

  • Luminophore
  • Oxygen quenching
  • Oxygen sensor
  • Phenanthroline
  • Ru (II) complex

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