Synthesis, structure, photophysics, electrochemistry, and ion-binding studies of ruthenium(II) 1,10-phenanthroline complexes containing thia-, selena-, and aza-crown pendants.
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 Hg2+ ions, to the solution of [Ru(bpy)2(L6)](ClO4)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.
Li
Mei-Jin
MJ
Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Department of Chemistry, The University of Hong Kong, People's Republic of China.
Chu
Ben Wai-Kin
BW
Zhu
Nianyong
N
Yam
Vivian Wing-Wah
VW
D003460:Crystallization; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D019216:Metals, Heavy; D015394:Molecular Structure; D010618:Phenanthrolines / Q000737:chemistry*; D017975:Ruthenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012996:Solutions; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship
D019216:Metals, Heavy; D010618:Phenanthrolines; D017975:Ruthenium Compounds; D012996:Solutions