Synthesis, X-ray structures, spectroscopic and electrochemical properties of ruthenium(II) complexes containing 2,2′-bipyrimidine

pH- and DNA-induced dual molecular light switches based on a novel ruthenium(II) complex

“…1-Azaphenanthrene-5,6-dione [42], 5,6-diamino-1,10-phenanthroline [43] and cis-Ru(bpy) 2 Cl 2 Á2H 2 O (bpy = 2,2 0 -bipyridine) [44] were synthesized according to the literature methods. The other chemicals were obtained from commercial sources and used .…”

Efficient microwave-assisted synthesis and characterization of key ruthenium(II) polypyridyl complexes [Ru(bpy)3](PF6)2, [Ru(phen)3](PF6)2, [Ru(bpy)2(phen)](PF6)2 and [Ru(phen)2(bpy)](PF6)2

“…Ru(DMSO) 4 Cl 2 [12], Ru(bpy) 2 Cl 2 [13] and Ru(phen) 2 Cl 2 [14] were prepared by modification of literature procedures.…”

The interesting DNA-binding properties of three novel dinuclear Ru(II) complexes with varied lengths of flexible bridges

“…In the absence of the DNA, UV-vis absorption spectra of the three complexes in water are quite similar to each other, characterized by a bpy-centered π-π* transition band at~287 nm, and a metal-to-ligand charge transfer (MLCT) transition band at~465 nm. These assignments are made on the basis of the comparisons of the spectra of 1-3 with that for [Ru(bpy) 3 ] 2+ [56]. With increasing concentrations of ct-DNA, 1-3 exhibited smaller hypochromicities of b8% for the MLCT bands than a hypochromicities of 11% reported for corresponding band of an analogous Ru(II) complex of [Ru(bpy) 2 (p-mopip)] 2+ {p-mopip = 2-(4-methoxylphenyl)imidazo [4,5-f] [1,10]phenanthrolin} [15], but more evident hypochromicities of 47%, 39%, and 45% respectively for the π-π* transition bands at 285 nm than a hypochromicity of 34% reported for [Ru(bpy) 2 (pmopip)] 2+ [15].…”