Cu(II) Complexes of Isoniazid Schiff Bases: DNA/BSA Binding and Cytotoxicity Studies on A549 Cell Line

Table 4

Stern-Volmer quenching constant (𝐾_SV) and effective quenching constant/binding constant (𝐾_𝑎) calculated from modified Stern-Volmer plots for the interaction of complexes C5–C8 with BSA.

Compound	𝐾SV (M^−1)	𝑘𝑞 (M^−1s^−1)	𝐾𝑎 (M^−1)
C5	2.2×10^5	2.2×10^13	8.53×10^4
C6	1.1×10^5	1.1×10^13	7.49×10^4
C7	2.8×10^5	2.8×10^13	7.25×10^4
C8	4.3×10^5	4.3×10^13	3.48×10^4