Abstract
Cyclic voltammograms and electrochemomechanical deformations (ECMD) in freestanding polypyrrole (PPy) films have been investigated as a function of electrolyte concentration. It was found that both the oxidative and reductive peaks shifted towards lower potential with the dilution of the electrolyte in PPy films deposited from dodecylbenzene sulfonic acid. In the case of PPy films deposited from p-phenol sulfonic acid, the oxidation and reduction peaks tend to shift towards higher and lower potentials, respectively. These results indicate that the ion contributing to the redox reaction determines the polarity of the potential shift according to the Nernst equation. The ECMD magnitudes were also changed with electrolyte concentration. However, the efficiency of the deformation per degree of doping did not change much over 0.01 M. This indicates that the decrease in ECMD magnitude is not attributed to degradation of the ECMD behavior, but that a decrease in doping quantity for the film essentially effects the decrease in deformation magnitude in diluted media.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
