New membrane electrodes based on a functionalized tetraphenylborate covalently bound to the polymeric backbone

Giannetto, Marco; Bello, Alessandra; Gennari, Marcello; Marchiò, Luciano; Mori, Giovanni

doi:10.1016/j.snb.2008.02.040

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…Tetraphenylborate has been used in the formation of many sensors as a well-known ion exchanger 23,24 . Because of the interactions between the particles, tetraphenylborate ions with negative charges are able to exclude same negative ions but attract positive ions from the membrane 25 .…”

Section: Introductionmentioning

confidence: 99%

Application of Graphene/Tetraphenylboron-Dopamine Modified Graphite Electrode for Selective Determination of Dopamine

Zhang¹,

Liu²,

Yifeng³

et al. 2014

Asian J. Chem.

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A novel electrochemical sensor based on graphene and tetraphenylboron-dopamine electroactive material was developed for determination of dopamine which is correlative to some neurogenic disease. Graphene was synthesized by one-step liquid-phase exfoliation of graphite and the tetraphenylboron-dopamine was prepared by precipitation reaction on formation of ion association complex. The resultant electrode showed better performance in selectivity, sensitivity and narrow potential window comparing with bare graphite electrode and graphite electrode modified by tetraphenylboron-dopamine. In the presence of 1000-fold concentration interference of ascorbic acid and uric acid, the linear range for dopamine was successfully determined from 1 × 10 -4 to 1 × 10 -10 mol/L with a correlation coefficient of 0.9969. The detection limit was estimated to be 7.39 × 10 -11 mol/L in 3 of signal to noise ratio (S/N = 3). According with successive measurements in 10 times, the relative standard deviation of all results for graphene/tetraphenylboron-dopamine /graphite electrode still kept in 1.83 %. Moreover, the graphene/tetraphenylboron-dopamine /graphite electrode could be stored for 30 days in 4 ºC without sharply decrease of its electroactivity. All results clearly prove that this modified electrode is sensitive way for selective determination of dopamine.

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Section: Introductionmentioning

confidence: 99%

Application of Graphene/Tetraphenylboron-Dopamine Modified Graphite Electrode for Selective Determination of Dopamine

Zhang¹,

Liu²,

Yifeng³

et al. 2014

Asian J. Chem.

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A Novel Terpolymer Membrane-Based Electrode Sensor for Selective Determination of Cd(II) Ions

et al. 2022

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A new polymeric membrane sensor for Cd(II) ion based on methyl acrylate-acrylonitrile-methyl methacrylate terpolymer as membrane carrier has been synthesized via atom transfer radical polymerization (ATRP) method at 60 ºC. Preliminary investigation with the membrane exhibited promising selectivity for Cd(II) ion with a slope of 32.02 mV/decade and the same could be estimated in the concentration range of 1 × 10-6 − 1 × 10-1 M in the working pH range of 4-6 for up to 90 days. The potentials generated across the membrane were reproducible and the response time was less than one minute. The electrode works well even in a partially non-aqueous media. The effect of surfactant and detergent on the working of Cd(II) selective electrode was also studied. A decrease in potential was observed in the presence of appreciable amount of surfactant and detergent. Addition of plasticisers was found to greatly improve the performance of membrane, best results being obtained with the membrane ratio (NaTPB:TP:TBP::1:100:06), exhibiting a working concentration range of 1 × 10-6 − 1 × 10-1 mol L-1 with a short response time of 10 s. The proposed sensor shows significantly good selectivity toward Cd(II) ion in comparison with some alkali, alkaline earth, transition and heavy metal ions. It was successfully employed as an indicator electrode in potentiometric titration of cadmium(II) ions against EDTA solution.

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New membrane electrodes based on a functionalized tetraphenylborate covalently bound to the polymeric backbone

Cited by 2 publications

References 17 publications

Application of Graphene/Tetraphenylboron-Dopamine Modified Graphite Electrode for Selective Determination of Dopamine

Application of Graphene/Tetraphenylboron-Dopamine Modified Graphite Electrode for Selective Determination of Dopamine

A Novel Terpolymer Membrane-Based Electrode Sensor for Selective Determination of Cd(II) Ions

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