Synthesis, structure, photophysics, electrochemistry, and ion-binding studies of ruthenium(II) 1,10-phenanthroline complexes containing thia-, selena-, and aza-crown pendants

Mei Jin Li, Ben Wai Kin Chu, Nianyong ZHU, Vivian Wing Wah Yam

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)

Abstract

A series of ruthenium(II) diimine complexes containing thia-, selena- and aza-crowns derived from 1,10-phenanthroline have been synthesized and characterized, and their photophysics and electrochemistry were studied. Their interaction with metal ions was investigated by UV-vis, luminescence, and 1H NMR spectroscopy. The crystal structures of [Ru(bpy) 2(L1)](PF6)2, [Ru(bpy)2(L2)] (ClO4)2, [Ru(bpy)2(L3)](ClO4) 2, and [Ru(bpy)2(L4)](ClO4)2 have been determined. The luminescence properties of [Ru(bpy)2(L1)] (ClO4)2 were found to be sensitive and selective toward the presence of Hg2+ ions in an acetonitrile solution. The addition of alkaline-earth metal ions, Zn2+, Cd2+, and Hg 2+ ions, to the solution of [Ru(bpy)2(L6)](ClO 4)2 in acetonitrile gave rise to large changes in the UV-vis and emission spectra. The binding of metal ions to [Ru(bpy) 2(L6)](ClO4)2 was found to cause a strong enhancement in the emission intensities of the complex, with high specificity toward Hg2+ ions.

Original languageEnglish
Pages (from-to)720-733
Number of pages14
JournalInorganic Chemistry
Volume46
Issue number3
DOIs
Publication statusPublished - 5 Feb 2007

Scopus Subject Areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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