1491-1505
SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ACTIVITIES OF Cu (II), Ni (II) AND Zn (II) COMPLEXES WITH CURCUMIN AND METHYL SALICYLALDEHYDE
Authors: Priyadharshini N 1 , Iyyam Pillai S1 , C. Joel 2 , R. Biju Bennie 2 , Subramanian S 3 , P. Venkatesh1

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Curcumin, the major active component of the spice turmeric, which is considered to be a very useful
compound in health matters, is recognized as a safe component with great potential for cancer
chemoprevention and cancer therapy. The paper presents the synthesis of complex combinations of Cu(II),
Ni(II) and Zn(II) with Schiff base obtained by the condensation reaction of curcumin, hydrazine hydrate,
methyl salicylaldehyde . The structural features have been arrived from their FT-IR, 1H NMR, 13C NMR,
mass, UV-vis spectroscopic studies. The binding behaviours of the synthesis complexes towards calf thymus
DNA have been investigated by absorption spectra, emission spectra, viscosity measurements and circular
dichroic studies. The DNA binding constants reveal that all these complexes interact with DNA via
intercalating binding mode with binding constants (Kb) of 4.72 x 104 M-1
, 3.89 x 104 M-1 and 3.13 x 104 M-1
and Kapp of 5.26 x 105 M-1
, 4.37 x 105 M-1 and 3.91 x 105 M-1
.
Keywords: Curcumin, DNA binding, Viscosity, Intercalation, methyl salicylaldehyde