Luminescent properties and CH 3COO - recognition of europium complexes with different phenanthroline derivatives as second ligands

Chaolong Yang, Jianxin Luo, Jianying Ma, Dongyu Zhu, Lei Miao, Yunfei Zhang, Liyan Liang, Mangeng Lu

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Six novel europium complexes with phenanthroline derivatives as fluorescence sensor have been prepared, and their structures were characterized by FT-IR, UV-vis, 1H NMR, 13C NMR, ESI-MS, and element analysis. All complexes exhibited long luminescent lifetime and high luminescent quantum efficiency (η). Among these complexes, the complex (a) exhibited the lowest luminescent quantum efficiency and shortest lifetime, which was attributed to the presence of OH oscillators in the corresponding ligand HPIP. Spectroscopic studies, including UV-vis, PL and 1H NMR spectra, showed that these sensors exhibited striking spectra changes in response to CH 3COO - due to hydrogen bonding interaction of imidazolyl NH groups, aromatic and phenanthroline ring's protons with CH 3COO -. Particularly, europium complexes (e) and (f) have a remarkable color changes (from transparent to light-yellow), and hence they were convenient to detect the CH 3COO - with them by naked eye in DMSO solution.

Original languageEnglish
Pages (from-to)1097-1106
Number of pages10
JournalSynthetic Metals
Issue number13-14
Publication statusPublished - 2012 Aug
Externally publishedYes


  • 1,10-Phenanthroline derivatives
  • Anion recognition
  • Europium (III) complexes
  • Luminescent property
  • Quantum efficiency
  • Sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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