I am working on depositing Polyaniline on titanium through electropolymerization using cyclic voltammeter for antibacterial effect. I found a couple of articles showing that they achieved antibacterial behavior by coating surfaces with Polyaniline. However, I am not able to achieve those results. I am able to form a film of Polyaniline (I assume that it is emaraldine because it is green in color) but my bacterial studies showed no antibacterial effect of the Polyaniline. Any ideas why or what should I do differently?