**2.2 Electropolymerization cell**

Electropolymerization of the monomers and formation of the polymer films was carried out using potentiodynamic technique. The cell used is shown in Fig. (1). This cell is made from transparent Prespex trough, which has the inside dimensions of 8cm length, 2.5cm width and 3cm height.

Fig. 1. Three electrode cell used for electropolymerization and cyclic voltammetry measurements. Were CE is counter electrode, WE is working electrode, SB is salt bridge, SCE is the standard calomel electrode and RE is the reference electrode.
