Electrochemical Characteristics of Poly(o-Aminobenzoic Acid) Modified Glassy-Carbon Electrode and Its Electrocatalytic Activity towards Oxidation of Epinephrine

Wei, Cheng; Jin, Geng Bang; Zhang, Y.

doi:10.1007/s11175-005-0160-6

Cited by 12 publications

(8 citation statements)

References 27 publications

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“…From the second cycle, two anodic peaks appear on the voltammograms with potentials at +0.145 and +1.588 V, respectively. The peaks' current increased upon continuous scanning, reflecting the continuous growth of the film of polymerization, and a blue polymer film is formed on the GCE surface, which is similar with the former literatues 28, 31. These facts indicate that p ‐ABA is deposited on the surface of GCE by electropolymerization.…”

Section: Resultssupporting

confidence: 67%

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Simultaneous determination of hydroquinone and catechol using poly(p‐aminobenzoic acid) modified glassy carbon electrode

Yang

Zhu

Chen

et al. 2009

J of Applied Polymer Sci

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ABSTRACT:The electrochemical redox reaction of hydroquinone (HQ) and catechol (CC)was investigated with poly-(p-aminobenzoic acid) modified glassy-carbon electrode (poly-p-ABA/GCE) via cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The poly-p-ABA/GCE has shown an excellent electrocatalytic activity for HQ and CC in 0.1 mol L À1 phosphate buffer solution (PBS). The oxidation and reduction separation (DE) has been decreased from 353 to 32 mV for HQ and from 228 to 33 mV vs. SCE for CC at the bare GCE and poly-p-ABA/ GCE respectively. DPV curves show that the oxidation potential of HQ and CC has a separation about 105 mV at the poly-p-ABA/GCE. Moreover, the oxidation current of HQ and CC has been enhanced two and four times respectively at the modified electrode. Using DPV method, a highly selective and simultaneous determination of HQ and CC has been explored at the poly-p-ABA/ GCE.

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Section: Resultssupporting

confidence: 67%

“…Xu et al reported a poly‐( p ‐aminobenzoic acid) modified electrode for selective determination of dopamine29 and monoamine 30. Chen et al prepared a poly‐( o ‐Aminobenzoic Acid) modified glassy‐carbon electrode and applied it for the electrochemical determination of epinephrine 31…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of hydroquinone and catechol using poly(p‐aminobenzoic acid) modified glassy carbon electrode

Yang

Zhu

Chen

et al. 2009

J of Applied Polymer Sci

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show abstract

“…Comparing CV technique, the sensitivity in semi-derivative SWVs towards AA is very high and the sensitivities of EP and DA have been reduced. Further, the peak separation between the analytes in AA-EP and AA-DA mixture is found to be 180.6 and 166.8 mV, respectively, which is higher than that of the peak separation obtained using CV technique and also higher than the previously reported values [53][54][55]. However, there is a slight lower positive potential shift for all the peaks in semi-derivative SWVs when comparing CVs, this could be caused by the inability to match the backgrounds or by unknown synergistic effects in the mixture [56].…”

Section: Semi-derivative Swvs Of Aa-ep and Aa-da In The Mixture Of Recontrasting

confidence: 71%

Multi-walled carbon nanotubes with poly(methylene blue) composite film for the enhancement and separation of electroanalytical responses of catecholamine and ascorbic acid

Umasankar¹,

Chen²

2008

Sensors and Actuators B: Chemical

137

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“…As reported in literature 22–24, a signal amplification based on silver staining on the gold nanoparticles, offers a distinct enhancement of the immunoreaction response, comparing with conventional electrochemical immunosensors.…”

Section: Introductionmentioning

confidence: 90%

CA 125 Immunosensor Based on Poly‐Anthranilic Acid Modified Screen‐Printed Electrodes

et al. 2012

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In this paper, two simple and sensitive approaches for CA 125 detection are presented by using antibody immobilized on poly‐anthranilic acid modified graphite screen‐printed electrodes. The first proposed approach is a label‐free impedimetric immunosensor. The immunoassay is based on poly‐anthranilic acid (PAA) modified graphite screen‐printed electrodes with subsequent covalently monoclonal antibody anti‐CA 125 immobilization. The modified screen‐printed electrodes are used to capture the protein from the sample solutions. A curve calibration by electrochemical impedance spectroscopy (EIS) was obtained. The second approach is based on a sandwich format. The monoclonal anti‐CA 125 antibodies immobilized on poly‐anthranilic acid modified graphite screen‐printed electrodes is used to capture the protein from the sample solution. The sandwich assay is then performed by adding secondary anti‐CA 125 antibodies labeled with gold nanoparticles (AuNPs). The antibody‐AuNPs captured onto immunosensor surface induced the silver deposition from a silver enhancer solution. The deposited AgNPs could be measured by anodic stripping analysis (ASV) in acid solution. A curve calibration by ASV was obtained. The experimental conditions were examined and were optimized using electrochemical impedance spectroscopy. The performance of both immunosensors in terms of sensitivity, reproducibility and selectivity were studied.

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Electrochemical Characteristics of Poly(o-Aminobenzoic Acid) Modified Glassy-Carbon Electrode and Its Electrocatalytic Activity towards Oxidation of Epinephrine

Cited by 12 publications

References 27 publications

Simultaneous determination of hydroquinone and catechol using poly(p‐aminobenzoic acid) modified glassy carbon electrode

Simultaneous determination of hydroquinone and catechol using poly(p‐aminobenzoic acid) modified glassy carbon electrode

Multi-walled carbon nanotubes with poly(methylene blue) composite film for the enhancement and separation of electroanalytical responses of catecholamine and ascorbic acid

CA 125 Immunosensor Based on Poly‐Anthranilic Acid Modified Screen‐Printed Electrodes

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