Abstract
Ternary copper(II) complexes [Cu(L-Ser)(HB)(U)](ClO4) (1 and 2) where L-Ser = L-Serine, U = Urea, HB is a N,N-donor heterocyclic bases, viz. 1,10-phenanthroline (phen) (1), 2, 2’- bipyridine (bpy) (2), are synthesized, characterized, and their DNA binding, cleavage and antimicrobial activities are studied. The one-electron paramagnetic complexes display a d-d band near 600 nm in water. Binding interactions of the complexes with calf thymus (CT) DNA have been investigated by absorption, emission, viscosity, and cyclic voltammetry studies. The complexes cleave the supercoiled DNA (pBR 322) to its nicked circular form in the presence of gallic acid at appropriate complexes concentration. The phen complex (1) displays significant binding propensity to the CT DNA. The bpy complex (2) does not show any significant binding to the DNA and hence poor cleavage efficiency.
Published Version
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