EQCM studies of film growth, redox cycling, and charge trapping of n-doped and p-doped poly(thiophene)

A comparison of charge transport behavior in functionalized and non-functionalized poly 3,4-(ethylenedioxythiophene) films

“…6a), we find a single broad oxidation peak at +0.06 V ascribable to the movement of perchlorate ions into the film, which is followed by two unresolved peaks at −0.30 and −0.55 V in the cathodic branch of the voltammogram corresponding to charge trapping i.e. charged domains embedded in the matrix of the insulating film and release of anions, a behavior characteristic of polythiophenes in general [30]. This one-step oxidation and reduction process followed …”

Spectroelectrochemistry of alternating ambipolar copolymers of 4,4′- and 2,2′-bipyridine isomers and quaterthiophene

“…Oxidation onset of polymer layers falls at 0.60 and 0.55 V ( another. Both first reduction and oxidation peaks are noticeably sharper since detrapping [88] of p-and n-doping charges takes place, overlapping with CV peaks of p-or n-doped polymers only. When both polymers are doped across both p-and n-doping regimes, very stable electrochemistry is observed with negligible decrease in electroactivity after 50 cycles.…”

Voltammetric, EQCM, and in situ conductance studies of p- and n-dopable polymers based on ethylenedioxythiophene and bithiazole

“…curves 3, 4 and curve 0). The nature of the prepeaks and "enhanced plateau" were widely discussed in the literature and attributed to the charge trapping [85][86][87] or/and redox reaction of chemically modified polymer fragments formed due to the presence of impurities like water traces in the working solution [88].…”