Intrinsic asymmetry, hysteresis, and conformational relaxation during redox switching in polypyrrole: a coulovoltametric study

Article Abstract:

The electrochemically stimulated conformational relaxation treatment has been proven to be valid for describing theoretically anodic coulovoltametric responses of conducting polymers. Congruent experimental and theoretical curves were obtained from experimental variables representing departure potential, sweep rate, temperature and electrolyte concentration. The oxidation of a compacted polypyrrole film under conformational relaxation control and diffusional full completion does not erase a deep structural memory and promotes the appearance of a hysteresis cycle.

Research, Usage, Hysteresis, Hysteresis (Physics), Conformational analysis, Electrochemical analysis, Conducting polymers, Voltammetry, Coulometry

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Characterization of the reduced and oxidized polypyrrole/water interface: a molecular dynamics simulation study

Article Abstract:

A model with atomic detail of the polypyrrole/water system is simulated in both the oxidized (charged) and reduced (uncharged) polymer. From the simulated trajectories, macroscopic properties, such as the polypyrrole density in its reduced state and polymer swelling after oxidation, are simulated.

Methods, Polymeric composites, Polymer composites, Chemical properties, Pyrrole, Pyrroles

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