Antimicrobial Activity and Interaction with Bovine Serum Albumin of Nickel(II) Complex

The binding reaction of nickel(II) complex [Ni(C16H20N2)2•(H2O)2]Cl2•C3H7NO with bovine serum albumin(BSA) was studied by fluorescence spectroscopy under the simulative physiological conditions. The experimental results show that the fluorescence quenching of BSA by nickel(II) complex is a result of the formation of ground state complex and the quenching mechanism was static quenching. The binding constants were 4.24×103 L•mol−1 at 293K with one binding site. The antimicrobial activity study found that the nickel(II) complex was active against Escherichia coli, Staphylococcus aureus and Bacillus subtilis.