Polymer dynamics in thin p-type conducting films investigated by ac-electrogravimetry. Kinetics aspects on anion exclusion, free solvent transfer, and conformational changes in poly(o-toluidine)

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

“…Recently, a refined analytical procedure was proposed to study the anion pdoping of intrinsically conducting polymers (ICPs) by ac-electrogravimetry [30]. Here, the theory section is limited to present basic mathematical developments.…”

Covalent Bonding of PANI and p‐Phenylenediamine‐Functionalized GO Using N,N′‐Dicyclohexylcarbodiimide as Dehydrating Agent for Electrochromic Applications

“…For these four samples, the CV curves have similar shape and display two characteristic redox peak pairs of PANI in the potential range investigated. Two pairs of redox peaks can be assigned to the leucoemeraldine salt (LS) to emeraldine salt (ES) and ES to pernigraniline salt (PS), and their reverse transitions, respectively . The CV peak current densities and CV peak potentials of redox peaks are recorded and listed in Table .…”

Evaluation of the electrochemical anion recognition ofNO3−-imprinted poly(Azure A) inNOAgrisuelas1, Gabrielli2, Garcı́a-Jareño3 et al. 2016Electrochimica ActaSelf Cite11070View full textAdd to dashboardCite

“…Partial number of water molecules may be due to expansion/contraction of the PAA film during the electrochemical reactions [29,44]. However, we cannot discard the transfer of OH − with a theoretical ( ⁄ ) of +17 g mol 1 .The cross-linking process during the radicalization at potentials higher than 0.8 V may hinder the expulsion of anions from sites buried deep inside the polymer in the next voltammetric cycle explaining the loss of the NO 3 − -PAA electroactivity and the mass gained during the first 100 cycles (Figure 3).…”

“…[54][55][56][57]. Moreover, the expansion/contraction of the polymer affects the transfer of the free water molecules and makes it difficult to estimate the film thickness [29,44,58]. In competitive solutions, the exclusion effect and the expansion/contraction of film also take place can be assumed.…”