[Synthesis and DNA binding studies of Ruthenium complexes by spectra]

New Complexes Ru(bpy)2dppx2+ were synthesized. The binding of Ru(bpy)2dppx2+ to calf thymus DNA has been investigated by using electronic absorption and fluorescence spectra. The intercalation mode was proved to exist. The DNA leads to a dramatic enhancement of the photoluminescence of the drug at 599 nm (lambda ex = 471 nm) and absorption hypochromic effect and red shift. It was obvious that Ruthenium complexes may be used at a good DNA probe.