Synthesis, photophysical, electrochemical and DNA binding properties of a novel ruthenium(II) N^N complex

Abstract

A novel mononuclear ruthenium(II) N^N complex of the type [Ru(bpy) 2 (N^N)](PF 6) 2 where bpy = 2,2'-bipyridine and N^N = N-(2pyridylmethylene)-2-anthramine) has been synthesized and characterized. Its electronic absorption, luminescence and electrochemical properties were investigated and discussed in details. The interactions of the ruthenium(II) complex with calf thymus DNA were investigated by UV-visible spectra as well as emission spectra, the results of binding experiments displayed that this complex is able to interact with calf thymus DNA with a moderate binding constant of 1.06 × 10 4 dm 3 mol-1 or 1.43 × 10 4 dm 3 mol-1 .