Research Article
Synthesis and Characterisation of Copper(II) Complexes with Tridentate NNO Functionalized Ligand: Density Function Theory Study, DNA Binding Mechanism, Optical Properties, and Biological Application
Figure 4
Emission spectra (a, b) of the CT-DNA-EB system in Tris-HCl buffer upon the titration of the copper(II) complex-1 (a) and complex-2 (b). λex = 522 nm; [EB] = 9.2 × 10−6 mol L−1, [DNA] = 1.22 × 10−6; [complex]: a 0.0, b 1.36 × 10−5, c 2.72 × 10−5, d 4.08 × 10−5, e 5.44 × 10−5, f 6.80 × 10−5, g 8.16 × 10−5, h 9.52 × 10−5 mol L−1. Arrow shows the intensity change upon the increase of the complex concentration. Plot of against [complex] in fluorescence quenching of CT-DNA-EB system in Tris-HCL buffer (c, d), complex-1 (c), and complex-2 (d), respectively.
| (a) |
| (b) |
| (c) |
| (d) |