Abstract
The fluorescence of praseodymium(III) complex containing 2,2′-bipyridine, [Pr(bpy) 2Cl 3·OH 2] has been investigated in details. Also, the biological activity of [Pr(bpy) 2Cl 3·OH 2] has been evaluated by examining its ability to bind to DNA with UV–vis, fluorescence as well as viscosity measurement. The fluorescence of [Pr(bpy) 2Cl 3·OH 2] is strongly quenched through static mechanism in the presence of DNA. DNA intrinsic binding constant, K b the binding site number, n the Stern–Volmer quenching constant, K SV and the thermodynamic parameters have been determined by fluorescence spectroscopy. For characterization of bonding mode, the effect of various experimental parameters were investigated on the interaction of [Pr(bpy) 2Cl 3·OH 2] with DNA.
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