Electrochemical copolymerization of o-toluidine (OT) with p-fluoroaniline (FA) was carried out in 1 M HCl by cyclic voltammetry. Polymeric films were deposited by employing different conditions such as cycle number and feed-ratio of comonomers. Electrochemical homopolymerization of OT and FA were also done. A growth equation for copolymer deposition relating the parameters of operation and charge associated for film deposition was obtained. Growth rate constant was determined. (C) 2002 Elsevier Science B.V. All rights reserved.