Research Article

Synthesis and Characterization of the Ligand Based on Benzimidazole and Its Copper Complex: DNA Binding and Antioxidant Activity

Figure 4

Electronic spectra of the free ligand buobb (a) and the complex Cu(II) (c) in Tris-HCl buffer upon addition of CT-DNA. The arrow shows the emission intensity changes upon increasing DNA concentration. [DNA]/( ) versus [DNA] for the titration of the ligand buobb (b) and the complex Cu(II) (d) with CT-DNA.
105431.fig.004a
(a)
105431.fig.004b
(b)
105431.fig.004c
(c)
105431.fig.004d
(d)