Influence of Dopant Ions on Dielectric and Physical Properties of Electrochemically Formed Poly‐N‐Methylpyrrole

Abstract

Dielectric properties (dielectric constants, dielectric losses, conductivity, and voltage breakdown strengths) of electrochemically formed poly-N-meth~lpyrrole (PNMP) have been studied as a function of the anions used in aqueous supporting electrolyte during electrochemical polymerization. Depending on the electrolyte anion and synthesis conditions, dielectric properties of resulting PNMP films varied considerably.

Electrodeposition of poly(n-methylpyrrole) coatings on steel from aqueous medium

“…The results show the presence of oxygen in the coatings, indicating that the electrolyte was doped into the MPPy coatings. Assuming that HC 2 O 4 − was the counterion,15 the degree of insertion of the counterion was calculated to be 0.39.…”

“…One of the successful examples is the electrochemical preparation of conducting polypyrrole on inert electrodes. So far, a vast number of articles can be found in the literature concerning various aspects of this material 6–21…”

A New Sensor for Ammonia Determination Based on Polypyrrole Films Doped with Dodecylbenzenesulfonate (DBSA) Ions

“…Among the most promising facts in relation to PNMPy is that the oxidation potential is more positive than PPy, which is a great advantage for application in batteries even though the lower conductivity [43,44], which is an attractive characteristic for the employment in capacitors [45,46]. Polymerization process can be followed by an EQCM and the doping degree in the polymer film can be determined.…”

Electrogeneration of Poly-N-Methylpyrrole Tosylate Doped Films. Electrochemical and Morphological Study

“…Maksymiuk et al reported conditions for the production of bilayers in which the outer component was pNMPy doped with perchlorate or chloride ions [14][15][16]. Some authors have verified the influence of the supporting electrolyte [17,18,19] and the polymerization temperature on electrical and mechanical properties of pNMPy and in copolymers with pyrrole in relation to its dielectric properties and charge transport mechanism [20][21][22]. Mitchell et al [23] reported that polypyrrole doped with sodium ptoluensulphonate exhibited an anisotropic molecular organization with pyrrole units and toluene sulphonate ions distributed parallel to the electrode surface.…”