2001
DOI: 10.1016/s0379-6779(00)00359-3
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Comparisons of charge compensation process in aqueous media of polyaniline and self-doped polyanilines

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Cited by 59 publications
(48 citation statements)
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“…In addition the evolution of frequency in the direct scan is completely different to those obtained in the inverted scan, it is the change of mass obtained is not reversible resulting in a broad frequency curve. This behavior is different to those obtained for sulfonated PANI (Mello et al, 2000;Varela et al 2001) where the curves of frequency were more reversible. This behavior suggest that the electroneutralization is more complexes for the polyANS that for the films synthesized to anilines ring substituted by sulfonic groups, probably due the distance of the sulfonic group and nitrogen is much longer in polyANS that the anilines substituted directly in the ring for sulfonic groups, so in this case the electroneutralization is more easy.…”
Section: Electrosynthesis and Electrogravimetric Study Of Polyans Syncontrasting
confidence: 99%
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“…In addition the evolution of frequency in the direct scan is completely different to those obtained in the inverted scan, it is the change of mass obtained is not reversible resulting in a broad frequency curve. This behavior is different to those obtained for sulfonated PANI (Mello et al, 2000;Varela et al 2001) where the curves of frequency were more reversible. This behavior suggest that the electroneutralization is more complexes for the polyANS that for the films synthesized to anilines ring substituted by sulfonic groups, probably due the distance of the sulfonic group and nitrogen is much longer in polyANS that the anilines substituted directly in the ring for sulfonic groups, so in this case the electroneutralization is more easy.…”
Section: Electrosynthesis and Electrogravimetric Study Of Polyans Syncontrasting
confidence: 99%
“…In case of sulfonated polyanilines is accepted that the charge compensation is accomplished mainly by the ejection of cations (Mello et al, 2000;Varela et al, 2000aVarela et al, , 2000bVarela et al, , 2001Cano-Márquez et al; in contrast with the behavior of PANI, which is carried out by the incorporation of anions (Hillman & Mohamud, 2006). In order to define as is realized the charge compensation of polyANS electrochemical quartz crystal microbalance (EQCM) measurements were carried out in monomer free solution, the curves obtained were analyzed considering that the change of frequency is correlated to change of mass for the Sauerbrey equation (Donjuan-Medrano & Montes-Rojas, 2008):…”
Section: Electrosynthesis and Electrogravimetric Study Of Polyans Synmentioning
confidence: 99%
“…Therefore, much effort has been dedicated to obtaining water-soluble ICPs. In the case of PANI, different approaches were used such as the incorporation of hydrophilic units to aromatic rings or on the nitrogen sites [12][13][14][15][16][17]. Also, other strategies, for example, the formation of PANI-blends with water-soluble polymeric acids [18], doping PANI with protonic acids carrying long hydrophilic tail [19], controlling the pH of the solution [20], by using β-cyclodextrin [21] or modifying polyaniline with orthosilicates [22] were also used.…”
Section: Introductionmentioning
confidence: 99%
“…Além das configurações para cada situação, são mostrados dois esquemas reacionais para a polianilina e uma derivada autodopada, denotada genericamente pela presença do grupo -SO 3 -como no caso das conhecidas SPAN 94,107,108 (polianilina sulfonada) e PAPSAH [109][110][111] (polianilina-co-N-ácido propanossulfonico). Através das configurações ilustradas, é fácil notar que a utilização de um material que troque fundamentalmente cátions com a fase eletrolítica apresenta vantagem adicional, pois resulta em baterias de tamanho menor com consequente incremento de todas as suas propriedades específicas 90 .…”
Section: Figura 1 Variação Do Potencial Em Função Da Intercalação Deunclassified