Dominating influence of rigid-backbone polyacid matrix during electropolymerization of aniline in the presence of mixtures of poly(sulfonic acids)

Грибкова, О. Л.; Ivanov, V. F.; Некрасов, А. А.; Vorob'ev, S. A.; Omelchenko, O. D.; Ванников, А. В.

doi:10.1016/j.electacta.2010.12.058

Cited by 12 publications

(16 citation statements)

References 15 publications

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“…7). This relation reveals that polyaniline oxidation/reduction is under diffusion control during to participate of H + ions in polyaniline oxidation/reduction process [23].…”

Section: Stability Of the Bilayer Coating On 430 Ssmentioning

confidence: 98%

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Electrochemical synthesis of nanostructure poly(3-aminobenzoic acid), polyaniline and their bilayers on 430SS and their corrosion protection performances

et al. 2016

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“…7). This relation reveals that polyaniline oxidation/reduction is under diffusion control during to participate of H + ions in polyaniline oxidation/reduction process [23].…”

Section: Stability Of the Bilayer Coating On 430 Ssmentioning

confidence: 98%

“…The peak around 784 cm À1 is related to 1,4-para substituted benzene ring [2]. The band at about 2925 cm À1 is characteristic of the aromatic CÀ ÀH stretching vibration [23]. The peak at 1301 cm À1 corresponds to NÀ ÀH bending.…”

Section: Paba/pani Deposition On 430 Ss Substratementioning

confidence: 99%

Electrochemical synthesis of nanostructure poly(3-aminobenzoic acid), polyaniline and their bilayers on 430SS and their corrosion protection performances

et al. 2016

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“…Firstly, the acceleration of PANI electropolymerization (compared to the polymerizations in inorganic acids) was observed in the cases of adding even small amounts of polyelectrolyte into reaction medium containing aniline and inorganic acid [3-9, 11, 12] or using polymer electrolyte only [10,[13][14][15][16]. This higher aniline polymerization rate in the presence of polyelectrolyte at lower concentration of the reagents still got no proper explanation.…”

Section: Introductionmentioning

confidence: 94%

“…The using of different polymer electrolytes opens perspectives for modification of the morphology of PANI films [3,6,8,9,[14][15][16] and optical, electrochemical, and other properties of PANI films [6,[9][10][11][12][13][14][15][16] that are highly necessary for direct practical application of such systems.…”

Section: Introductionmentioning

confidence: 99%

“…Among preparation methods of PANI, the electrodeposition is known to give the material free of the initial monomer and oxidant contamination [2] that allows considering this method as technology and environmentally friendly one. To improve physicochemical properties of PANI films, polymer electrolytes (namely, polymeric acids) have been used [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. PANI films thus obtained are characterized by reversible redox reaction and fast redox kinetics up to pH ∼4 [10] or even neutral [11] and alkaline pH [12], independence of the redox reaction rate on the PANI film thickness [10].…”

Section: Introductionmentioning

confidence: 99%

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On the nature of influence of polyelectrolyte molecular weight on aniline electropolymerization

Грибкова

Omelchenko

Некрасов

et al. 2015

J Solid State Electrochem

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Electrodeposition of polyaniline (PANI) complexes with a polymeric sulfonic acid of variable molecular weight has been studied with the purpose to explain specific features of aniline electropolymerization in the presence of polyelectrolytes. Poly-(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA) was taken as a model polyelectrolyte due to the ease of varying its molecular weight during polymerization of the monomer. Depending on the polyacid molecular weight, crucial changes in the shape of charge-and potential-time dependences and cyclic voltammograms have been observed during potentiostatic, galvanostatic, and cyclic voltammetry syntheses of PANI, respectively. The results are considered in terms of the influence of molecular weight on proton condensation ability of the polyacid and, therefore, on the degree of aniline protonation and its local concentration in the vicinity of polyacid macromolecule. The PANI films obtained are characterized by cyclic voltammetry and UV-vis and Raman spectroelectrochemistry, and the influence of the polyacid molecular weight on these properties is discussed.

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Polysulfonate-doped polyanilines—oxidation of ascorbic acid and dopamine in neutral solution

Lyutov

Tsakova

2020

J Solid State Electrochem

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The redox behavior of polyaniline (PANI) doped with polysulfonic acids is studied in slightly acidic and neutral solutions (from pH 4 to pH 7). The dopants used are polystyrene sulfonic acid (PSSA), poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA), and poly-(4,4′-(2,2′-disulfonic acid)-diphenylene-tere-phthalamide) (t-PASA). Thin PANI layers are used in order to identify clearly the redox peak structure. Based on deconvolution of the reductive currents, the pH dependence of the constituent peaks is studied and pathways of the reductive transitions are suggested. With increasing pH, a loss of electroactivity is observed for all three dopants but to a different extent: the largest for PAMPSA-and the smallest PSSA-doped PANIs. In the same time, a stabilization of the conductive emeraldine salt state is observed at pH 7 for all PANIs with the largest extent of stabilization in the PANI/PAMPSA case. The electrocatalytic properties of the polysulfonic acid-doped PANIs are comparatively studied for ascorbic acid (AA) and dopamine (DA) oxidation at pH 7. It is found that all three types of PANI are good electrocatalysts for both reactions with advantage of the PAMPSA-doped layers showing higher absolute oxidative currents for both reactions. The results concerning DA oxidation demonstrate the possibility to involve polysulfonic acid-doped PANIs in electrocatalytic reactions in neutral solutions occurring at high positive potentials beyond the peak potential of the PANI oxidative transition.

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Dominating influence of rigid-backbone polyacid matrix during electropolymerization of aniline in the presence of mixtures of poly(sulfonic acids)

Cited by 12 publications

References 15 publications

Electrochemical synthesis of nanostructure poly(3-aminobenzoic acid), polyaniline and their bilayers on 430SS and their corrosion protection performances

Electrochemical synthesis of nanostructure poly(3-aminobenzoic acid), polyaniline and their bilayers on 430SS and their corrosion protection performances

On the nature of influence of polyelectrolyte molecular weight on aniline electropolymerization

Polysulfonate-doped polyanilines—oxidation of ascorbic acid and dopamine in neutral solution

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