Micromorphology of PANI. The photograph of the
polyaniline films electrodeposited at 1.0, 1.1, 1.2, and 1.3V
on the ITO substrate is shown in Figure 1. It can be seen
the emerald PANI thin layer is deposited on glass from
Figure 1(a). With the electropolymerization potential rising,
the thickness of PANI layer has a significant increase, and the
color of PANI film becomes darker and darker. The PANI
film electrodeposited at 1.3V closes to dark green.