Norfloxacin and N-Donor Mixed-Ligand Copper(II) Complexes: Synthesis, Albumin Interaction, and Anti-Trypanosoma cruzi Activity

Figure 5

Stern-Volmer plots for the quenching of albumins’ intrinsic fluorescence by the copper complexes: (a) HSA-complex (1), (b) HSA-complex (2), (c) BSA-complex (1), and (d) BSA-complex (2). Control results of the effects of NOR and Cu(II) are also presented. and are the fluorescence intensities at the peak in the absence and presence of the complexes. HSA and BSA concentrations equal to 4.0 × 10⁻⁶ mol L⁻¹; temperature: 296 K.

(a)

(b)

(c)

(d)