Polyoxometallates as inorganic templates for monolayers and multilayers of ultrathin polyaniline

Kulesza, Paweł J.; Chojak, Małgorzata; Miecznikowski, Krzysztof; Lewera, Adam; Malik, Marcin A.; Kuhn, Alexander

doi:10.1016/s1388-2481(02)00361-2

Cited by 106 publications

(66 citation statements)

References 30 publications

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“…Up to now, the electrochemical behavior of POMs has been studied in many environments, such as aqueous solution [28,29] or ionic liquid [30][31][32][33]. POMs have been studied as monolayers or organic-inorganic hybrids in contact with different supporting electrolytes [34,35], and as single crystals in the absence of external liquid phase [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Solid-state electrochemical behavior of Keggin-type borotungstic acid single crystal

Adamczyk

Miecznikowski

2013

J Solid State Electrochem

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We demonstrate the electrochemical characteristics of the, poorly described in the literature, mixed-valence proton conducting solid borotungstic acid single crystal, H 5 BW 12 O 40 xH 2 O, in the absence of liquid electrolyte phase. We performed electrochemical measurements in an all-solid cell with a gold fiber ultramicrodisk (diameter 10, 25, and 40 μm) working electrode, a silver semi-reference disk electrode, and a glassy carbon ring counter electrode. Diagnostic experiments at different scan rates aimed at probing the model of mass transport and potential kinetic limitations. Such bulk parameters as the effective diffusion coefficient of charge propagation and the concentration of mixed-valence redox centers were determined by two methods. The first method is based on the analysis of both Cottrellian and steady-state currents (the mixed-regimes method), and the second method provides the true diffusion coefficient (transport coefficient free of the migration influence) for both the substrate and the product of the electrode reaction. Together, these methods constitute a double potential step chronoamperometry experiment. The data obtained with these electrochemical experiments (effective diffusion coefficients, concentration of mixed-valence redox centers, etc.) can support the results obtained with other techniques (XRD, FTIR, and TGA).

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Section: Introductionmentioning

confidence: 99%

Solid-state electrochemical behavior of Keggin-type borotungstic acid single crystal

Adamczyk

Miecznikowski

2013

J Solid State Electrochem

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“…A high anionic charge of POM layers or adsorbates permits their application as linking agents during fabrication of three-dimensional network films consisted of anionic and cationic species interconnected via simple electrostatic interactions. This layer-by-layer concept was applied to the formation of POM-based hybrid films containing conducting polymers [20][21][22][23], positively charged organics like poly(vinylpyridine) or poly(ethylenimine) [24] and transition metal (Fe, Ru, Os, Cu) complexes [2,[25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

Sosnowska

Góral-Kurbiel

Skunik-Nuckowska

et al. 2013

J Solid State Electrochem

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Preparation and electrochemical behavior of new hybrid materials composed of multi-walled carbon nanotubes (CNTs) that were derivatized with poly(diallyldimethylammonium) chloride and modified with vanadium-mixed addenda Dawson-type heteropolytungstate, [P 2 W 17 VO 62 ] 8− , is described here. These nanostructured composite systems exhibited fast dynamics of charge propagation. They were characterized by the transport (effectively diffusional) kinetic parameter of approximately 8×10 −8 cm −2 s −1/2 and the specific capacitance parameter of 82 F g −1 (at the charging/discharging current of 200 mA g −1 ). The latter parameter for bare CNTs was found to be only 50 F g −1 under analogous conditions. These observations were based on the results of galvanostatic charging-discharging, cyclic voltammetric, and AC impedance spectroscopic measurements. The improved capacitance properties were attributed to the systems' pseudocapacitive features originating from the fast redox transitions of the [P 2 W 17 VO 62 ] 8− polyanions. In addition to the fast redox conduction, the proposed organicinorganic hybrid materials exhibited interesting electrocatalytic activity toward reduction of bromate in the broad concentration range (sensitivity, 0.24 mA cm −2 mmol −1 dm 3 ).

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“…For formation of the stable oxide film, we noticed that the counter anions should be doped to the CP during the electropolymerization. We selected for the anion molybdophosphate ion, PMo 12 O 40 3-, (PMo 12 ) [11][12][13] which has the Keggin structure and relatively large molecular size.…”

Section: Introductionmentioning

confidence: 99%

“…PMo 12 can work as an inhibitor facilitating passivation of steels and be strictly fixed in the polymer matrix due to the large molecular size [14,15]. In addition, the PMo 12 anion lowered the polymerization potential of PPy formation from pyrrole (Py) monomer probably due to their catalytic property [16].…”

Section: Introductionmentioning

confidence: 99%

The effect of counter anions on corrosion resistance of steel covered by bi-layered polypyrrole film

2007

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Polyoxometallates as inorganic templates for monolayers and multilayers of ultrathin polyaniline

Cited by 106 publications

References 30 publications

Solid-state electrochemical behavior of Keggin-type borotungstic acid single crystal

Solid-state electrochemical behavior of Keggin-type borotungstic acid single crystal

Hybrid materials utilizing polyelectrolyte-derivatized carbon nanotubes and vanadium-mixed addenda heteropolytungstate for efficient electrochemical charging and electrocatalysis

The effect of counter anions on corrosion resistance of steel covered by bi-layered polypyrrole film

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