All-Solid-State Calcium Sensors Modified with Polypyrrol (PPY) and Graphene Oxide (GO) as Solid-Contact Ion-to-Electron Transducers

Abd-Rabboh, Hisham S.M.; Kamel, Ayman H.; Amr, Abd El‐Galil E.

doi:10.3390/chemosensors8040093

Cited by 10 publications

(6 citation statements)

References 39 publications

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“…Different types of polymers and nanofillers have been proposed so far to prepare SC-transducers. Remarkable examples of using nanocomposites of conducting polymers (CPs) with CNPs have been reported [16][17][18][19][20][21][22][23][24]. However, most of CPs can have drawbacks such as high electroactivity that promotes non-specific chemical reactions, sensitivity to CO 2 , pH or light.…”

Section: Introductionmentioning

confidence: 99%

Polymer nanocarbon materials as ion-to-electron transducers in solid-contact ion-selective electrodes

Zhizhin¹,

Turyshev²,

Kopytin³

et al. 2022

Nanosystems: Phys. Chem. Math.

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Carbon nanoparticles materials in polymer modification have gained particular importance in modern potentiometric studies after they were discovered to be ion-to-electron transducers in solid-contact ionselective electrodes (SC-ISEs). This paper describes the preparation and comparative evaluation of poly(vinyl chloride) (PVC) and Nafion membranes incorporated with light fullerene C60, single carbon nanotubes (SWC-NTs) and their mixture as transducer interlayers in the SC-ISE based on the ion-sensing PVC-membrane containing a high lipophilic 2-[bis-octadecyl sulfonic)-closo-decaborate anion. The best electroanalytical performance was achieved for the sensor fabricated with the transducer made by combining two transducing layers, a Nafion film modified with fullerene C60 and a plasticized PVC film modified with SWCNTs-C60 hybrid filler, which were sequentially applied onto the substrate carbositall electrode surface. The test results showed that the newly prepared a layer-by-layer SC-ISE is suitable for the sensitive determination of local anesthetics and some other protonable nitrogen-containing drugs. KEYWORDS nanocarbon-doped polymers, fullerene C60/SWCNTs, solid-contact ion-selective electrode, ionto-electron transducing materials, local anesthetics.

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Section: Introductionmentioning

confidence: 99%

Polymer nanocarbon materials as ion-to-electron transducers in solid-contact ion-selective electrodes

Zhizhin¹,

Turyshev²,

Kopytin³

et al. 2022

Nanosystems: Phys. Chem. Math.

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“…There are a wide variety of conventional ISEs that are commercially available, and many are reported in the literature. These electrodes permit selective determination of numerous cations and anions by direct potentiometric measurements. − …”

Section: Introductionmentioning

confidence: 99%

Paper-Based Potentiometric Sensors for Nicotine Determination in Smokers’ Sweat

et al. 2021

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Herein, we describe for the first time, the design and fabrication of a novel nicotine paper-based sensor, in which a miniaturized paper reference electrode is integrated for potentiometric measurements. The paper-based sensors were designed using printed wax barriers to define the electrochemical cell and the sample zones. The electrodes were based on the use of the ion association complexes of the nicotinium cation (Nic) with either tetraphenylborate (TPB) or 5-nitrobarbiturate (NB) counter anions as sensing materials for nicotine recognition. A poly (3,4 ethylenedioxythiophene)/poly-(styrene sulfonate) (PEDOT/PSS) conducting polymer was used as an ion-to-electron transducer. The performance characteristics of the proposed sensors were evaluated and it revealed a rapid and stable response with a Nernstian slope of 55.2 ± 0.3 and 51.2 ± 0.6 mV/decade over the linear range of 1.0 × 10 –5 to 1.0 × 10 –2 M and detection limits of 6.0 and 8.0 μM for [Nic/TPB] and [Nic/NB], respectively. The sensors revealed a constant response over the pH range 3.5–6.5. The designed sensors provided a portable, inexpensive, and disposable way of measuring trace levels of nicotine coming from different cigarettes and in the collected human sweat of heavy smokers. All results were compared favorably with those obtained by the standard gas chromatographic method.

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“…It overcomes the limitations of the other electrochemical methods. A wide variety of conventional potentiometric electrodes are commercially available in the local market, and many are reported in the literature for sensitive and selective monitoring of different ionic species in different application fields. − Only few reports are available on the potentiometric determination of SHAM. , …”

Section: Introductionmentioning

confidence: 99%

Paper-Based Potentiometric Device for Rapid and Selective Determination of Salicylhydroxamate as a Urinary Struvite Stone Inhibitor

et al. 2021

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Novel paper-based potentiometric platforms for rapid, costeffective, and simple determination of the salicylhydroxamic acid (SHAM) drug are presented. Both the SHAM sensor and the reference Ag/AgCl electrode were integrated together on the miniaturized paper platforms. The ion-sensing membrane for the presented sensor is based on the use of Sn IV -tetraphenylporphyrin (Sn IV TPP) as a charged carrier within a plasticized poly(vinyl chloride) (PVC) matrix. Multiwalled carbon nanotubes (MWCNTs) were used as an ion-to-electron transducer. The resulting sensor revealed a rapid and stable response with a Nernstian slope of −59.3 ± 0.7 mV/decade over the linear range of 1.0 × 10 −6 to 1.0 × 10 −3 M and a detection limit of 0.7 μM. All measurements were carried out in 30 mM phosphate-buffered solution (PBS) at pH 7.2. Intra-and interday precision were measured and found to be 1.7%. The relative standard deviation (RSD%) ( = 5) was calculated as 2.43% after utilizing five different electrodes (n = 5). The selectivity behavior of the prepared electrodes in the absence and presence of ionic additives was evaluated. The selectivity pattern showed a non-Hofmeister selectivity pattern in the existence of anionic additives with enhanced potentiometric selectivity for SHAM over different lipophilic anions (e.g., ClO 4 − , SCN − , and I − ). The presented device was successfully applied for SHAM determination in pharmaceutical preparations. This paper-based analytical device can be potentially manufactured at large scales and provides a portable, rapid, disposable, and cost-effective analytical tool for measuring the SHAM drug.

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All-Solid-State Calcium Sensors Modified with Polypyrrol (PPY) and Graphene Oxide (GO) as Solid-Contact Ion-to-Electron Transducers

Cited by 10 publications

References 39 publications

Polymer nanocarbon materials as ion-to-electron transducers in solid-contact ion-selective electrodes

Polymer nanocarbon materials as ion-to-electron transducers in solid-contact ion-selective electrodes

Paper-Based Potentiometric Sensors for Nicotine Determination in Smokers’ Sweat

Paper-Based Potentiometric Device for Rapid and Selective Determination of Salicylhydroxamate as a Urinary Struvite Stone Inhibitor

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