Abstract
A comparative study was conducted on the kinetic of electropolymerization of ortho, meta and N-alkyl and alkoxy substituted anilines in 1.0 M HCl using cyclic voltammetry. The results show that the net rate of polymer formation was strongly dependent upon the steric hindrance, stability of the radical cations, reactivity of the monomers as well as switch potential. Substituents determine the relative importance of the pathways that lead to formation of polymer or soluble products. The results also indicate that the mutual effect of switch potential on the growth of polymer and its degradation is closely related to the electronic effect of substituent groups. A kinetic expression for the autoacceleration process in the electrochemical polymerization of these aniline derivatives is expressed as ν = k [ p ] n [ M ] n ′ + k ′ [ M ] n ′ − k ″ [ p ] n ″ in which k, k′, [ M], [ p], and k″ are the initiation (nucleation process) rate constant, the rate constant when the polymer is deposited on the electrode, monomer concentration, the total amount of polymer, and the rate constant of degradation process, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.