The influence of spontaneous charging/discharging of conducting polymer ion-to-electron transducer on potentiometric responses of all-solid-state calcium-selective electrodes

Michalska, Agata; Maksymiuk, Krzysztof

doi:10.1016/j.jelechem.2004.10.030

Cited by 36 publications

(22 citation statements)

References 64 publications

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“…deviations of E 0 and base potential) of ISEs is consequence of minor variations in the transducer layer induced by fabrication protocols, 63 changes in sensing layer composition due to chemical, 64 and/or slow and spontaneous charging/discharging processes followed or caused by ion fluxes through the membrane. [65][66][67] The latter two are addressed by the chemistry of a sensing layer, utilizing a variety of strategies including, for example, designing a single component sensing layer. 68,69 …”

Section: Long-term Stability Of Graphite-based Isesmentioning

confidence: 99%

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

et al. 2017

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A simple and low-cost approach for the preparation of ion-selective electrodes (ISEs) is proposed as a favorable alternative to the traditional paper-based electrodes. This involved the application of graphite from a simple household pencil via mechanical abrasion onto a modified acetate sheet. The resulting electrodes exhibited excellent sensing properties towards all tested ions, including a wide dynamic response range, fast response time and satisfactory long-term stability. The same methodology was used to produce stable and functional reference electrodes. These electrodes were then combined with other graphite-based ISEs to yield single strip solid-contact electrodes for simultaneous detection of cations and anions in aqueous solutions. The described approach, which is analogous to simply drawing on paper, opens new avenues for the development of sensing devices using very cheap and easily accessible components.

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Section: Long-term Stability Of Graphite-based Isesmentioning

confidence: 99%

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

et al. 2017

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“…This is the origin of detection limit of electrode with chloride-selective membrane [175], because the ion transfer across the membrane is generally favored for the primary (analyte) ions. The undesirable effect of analyte ions leakage can be reduced or eliminated by external galvanostatic polarization, compensating the analyte ion flux [12,175] or by a carefully chosen method of conditioning, reducing the amount of analyte ions in the CP transducer phase [184,185]. Lowering of the detection limit enables also determination of unbiased selectivity coefficient, lower than those obtained earlier, when their determination was affected by analyte ions released from the membrane [175,186].…”

Section: Potentiometric Sensors With Polypyrrole Transducermentioning

confidence: 99%

Chemical Reactivity of Polypyrrole and Its Relevance to Polypyrrole Based Electrochemical Sensors

Maksymiuk

2006

Electroanalysis

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One of the most frequently used conducting polymers, polypyrrole, can take part in chemical processes with typical components of ambient media: oxygen, acids, bases, redox reactants, water, and organic vapors; it can also incorporate nonreactive ions and surfactants from solutions. The influence of such processes on changes of the polymer structure, composition and on possible degradation is analyzed. The benefits and disadvantages of such processes for analytical characteristic of polypyrrole based electrochemical sensors are considered. This discussion is focused on potentiometric ion sensors, where polypyrrole is either a receptor membrane or an ion-to-electron transducer placed between a solid state electrode support and a typical ion-selective membrane.

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“…The solid-contact ISEs with an EDTA-impregnated CP layer were not applicable to trace level measurements because a linear Nernstian response was obtained only over a restricted sample activity range [41]. More recently, submicromolar detection limits have been achieved using a PPy solid-contact layer either by impregnating it with another Ca 2þ -complexing ligand (tiron [42]) or by appropriate conditioning [43]. On the other hand, for PPy-based solidcontact ISEs, the lower detection limit could also be improved by applying an external current [40,44], in analogy to earlier experiments with liquid-contact ISEs [45 -47].…”

Section: Introductionmentioning

confidence: 99%

Response Behavior of Poly(vinyl chloride)‐ and Polyurethane‐Based Ca²⁺‐Selective Membrane Electrodes with Polypyrrole‐ and Poly(3‐octylthiophene)‐Mediated Internal Solid Contact

Sutter

Pretsch

2006

Electroanalysis

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The potentiometric response behavior of Ca 2þ -selective poly(vinyl chloride) (PVC) and polyurethane (PU) membranes with different inner contacts has been compared. Evidence for the formation of a water film between membrane and internal contact and, hence, a less than optimal lower detection limit have been found for membranes directly in contact with bare Au or with polypyrrole generated by electropolymerization in the presence of KCl. A significantly better behavior is shown by membranes with polypyrrole prepared in the presence of potassium hexacyanoferrate. Best performances have been obtained with solvent-cast poly(3-octylthiophene) as the internal contacting layer. As compared with the PVC membranes, those with PU had a significantly worse performance throughout.

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The influence of spontaneous charging/discharging of conducting polymer ion-to-electron transducer on potentiometric responses of all-solid-state calcium-selective electrodes

Cited by 36 publications

References 64 publications

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Chemical Reactivity of Polypyrrole and Its Relevance to Polypyrrole Based Electrochemical Sensors

Response Behavior of Poly(vinyl chloride)‐ and Polyurethane‐Based Ca²⁺‐Selective Membrane Electrodes with Polypyrrole‐ and Poly(3‐octylthiophene)‐Mediated Internal Solid Contact

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The influence of spontaneous charging/discharging of conducting polymer ion-to-electron transducer on potentiometric responses of all-solid-state calcium-selective electrodes

Cited by 36 publications

References 64 publications

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Single strip solid contact ion selective electrodes on a pencil-drawn electrode substrate

Chemical Reactivity of Polypyrrole and Its Relevance to Polypyrrole Based Electrochemical Sensors

Response Behavior of Poly(vinyl chloride)‐ and Polyurethane‐Based Ca2+‐Selective Membrane Electrodes with Polypyrrole‐ and Poly(3‐octylthiophene)‐Mediated Internal Solid Contact

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Response Behavior of Poly(vinyl chloride)‐ and Polyurethane‐Based Ca²⁺‐Selective Membrane Electrodes with Polypyrrole‐ and Poly(3‐octylthiophene)‐Mediated Internal Solid Contact