Electrochemistry of electropolymerized tetra (p-aminophenyl)porphyrin nickel film electrode and catalytic oxidation of acetaminophen

Huang, Shasheng; Tang, He; Bi-fen, LI

doi:10.1007/bf01242187

Cited by 31 publications

(18 citation statements)

References 17 publications

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“…Both titrimetric and spectrophotometric methods involve a tedious extraction process prior to the determination, whereas the LC method is time-consuming. Due to the advantages of low cost, fast response, simple instrumentation, high sensitivity, facile miniaturization, and low power requirement, numerous voltammetric methods of acetaminophen have been developed [31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Poly(taurine)/MWNT-modified glassy carbon electrodes for the detection of acetaminophen

Wan

Wang

et al. 2008

J Appl Electrochem

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A novel dye-polymer/CNT, poly(taurine)/MWNT-modified glassy carbon electrode was fabricated. This electrode is based on an electrochemically polymerized taurine layer coated on a MWNT film. The application of this electrode for voltammetric detection of acetaminophen is described. The electroactive surface area of the modified electrode was calculated to be 0.37 cm2. Acetaminophen is oxidized at 0.38 V and then reduced at 0.27 V on the modified electrode. The irreversible oxidation process is due to the conversion of acetaminophen into imidogenquinone; the reduction process is ascribed to the reverse electrode reaction. The adsorption-controlled anodic peak current is proportional to the acetaminophen concentration (from 1.0 M to 0.1 mM) with a detection limit of 0.5 M. The detection of acetaminophen in drugs was conducted

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Section: Introductionmentioning

confidence: 99%

Poly(taurine)/MWNT-modified glassy carbon electrodes for the detection of acetaminophen

Wan

Wang

et al. 2008

J Appl Electrochem

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“…Métodos espectrofotométricos 3 também são citados na literatura, além de métodos espectroeletroquímicos 4 que são utilizados para determinação dos compostos, bem como acompanhamento dos mecanismos de reação, além dos procedimentos de análise por injeção em fluxo 5 e voltamétricos 6,7 . O primeiro eletrodo de pasta de carbono 8 foi desenvolvido, em 1958, na tentativa de preparar um eletrodo de carbono renovável para ser usado em uma ampla faixa de potenciais positivos onde o eletrodo de mercúrio metálico não é aplicável devido à sua oxidação.…”

Section: Introductionunclassified

Determinação de paracetamol em produtos farmacêuticos usando um biossensor de pasta de carbono modificado com extrato bruto de abobrinha (Cucurbita pepo)

Vieira¹,

Lupetti²,

Fatibello‐Filho³

2003

Quím. Nova

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were investigated as the source of peroxidase (POD: EC 1.11.1.7). Among those, zucchini (Cucurbita pepo) crude extract was found to be the best one. This enzyme in the presence of hydrogen peroxide catalyses the oxidation of paracetamol to N-acetylp-benzoquinoneimine which the electrochemical reduction back to paracetamol was obtained at a peak potential of -0.10V. A cyclic voltammetric study was performed by scanning the potential from + 0.5 to -0.5 V. The recovery of paracetamol from two samples ranged from 97.3 to 106% and a rectilinear calibration curve for paracetamol concentration from 1.2x10 -4 to 2.5x10 -3 mol L -1 (r=0.9965) were obtained. The detection limit was 6.9x10 -5 mol L -1 and the relative standard deviation was less than 1.1% for a solution containing 2.5x10 -3 mol L -1 paracetamol and 2.0x10 -3 mol L -1 hydrogen peroxide (n=12). The results obtained for paracetamol in pharmaceutical products using the proposed biosensor and Pharmacopoeial procedures are in agreement at the 95% confidence level.

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“…This poor electropolymerizability of aniline derivatives could be got around by an inverse approach; functional molecules bearing a phenyl or naphthalene group were amino-substituted to promote the electrocoupling. In this manner, amino derivatives of porphyrines [190,191], anthraquinone [192], and naphthol [193] were polymerized. In some cases, substitution by a hydroxyl group also promotes the electropolymerization of aromatic molecules and allows to reach conjugated structures such as those from juglone monomer [194].…”

Section: Electropolymerization Of Substituted Heterocyclesmentioning

confidence: 99%

Electropolymerized Films of π‐Conjugated Polymers. A Tool for Surface Functionalization: A Brief Historical Evolution and Recent Trends

Bidan

2010

Electropolymerization

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Electrochemistry of electropolymerized tetra (p-aminophenyl)porphyrin nickel film electrode and catalytic oxidation of acetaminophen

Cited by 31 publications

References 17 publications

Poly(taurine)/MWNT-modified glassy carbon electrodes for the detection of acetaminophen

Poly(taurine)/MWNT-modified glassy carbon electrodes for the detection of acetaminophen

Determinação de paracetamol em produtos farmacêuticos usando um biossensor de pasta de carbono modificado com extrato bruto de abobrinha (Cucurbita pepo)

Electropolymerized Films of π‐Conjugated Polymers. A Tool for Surface Functionalization: A Brief Historical Evolution and Recent Trends

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