Graphene Oxide‐Templated Polyaniline Microsheets toward Simultaneous Electrochemical Determination of AA/DA/UA

Bao, Yu; Song, Jixia; Mao, Yan; Han, Dongxue; Yang, Fan; Niu, Li; Ivaska, Ari

doi:10.1002/elan.201000607

Cited by 107 publications

(41 citation statements)

References 44 publications

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“…Therefore, the selective detection and simultaneous determination of DA, UA and AA has been a major goal of much electrochemistry research. For this purpose, various modified electrodes and electrochemical sensors and biosensors have been constructed [32][33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Electropolymerization of Thin Film Conducting Polymer and Its Application for Simultaneous Determination of Ascorbic Acid, Dopamine and Uric Acid

2011

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In this paper electropolymerization of a thin film of para-phenylenediamine (PPD) is studied at glassy carbon electrode (GCE) in sulfuric acid media by cyclic voltammetry. The results showed that this polymer was conducting and had a reproducible redox couple in the potential region from 0.0 to 0.4 V in phosphate buffer solution. This modified GCE (p-PPD-GCE) was applied for simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) using differential pulse voltammetry (DPV). The p-PPD-GCE in 0.1 M phosphate buffer solution (pH 5.0) separated the DPV signals of AA, DA and UA with sufficient potential differences between AA-DA and DA-UA and also enhanced their oxidation peak currents. The oxidation currents were increased from 2.0 to 2000.0 mM for AA, 10.0 to 1250.0 mM for DA and 50.0 to 1600.0 mM for UA. The detection limits were evaluated as 0.4, 1.0 and 2.5 mM for AA, DA and UA, respectively (S/N = 3).

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Section: Introductionmentioning

confidence: 99%

Electropolymerization of Thin Film Conducting Polymer and Its Application for Simultaneous Determination of Ascorbic Acid, Dopamine and Uric Acid

2011

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“…The chitosan-graphene composite showed good electrochemical catalytic activity to the oxidation reactions by considerably degreasing the overpotential. In a followed study, GO-templated polyaniline (GO-PAN) microsheets were prepared via oxidation polymerization of aniline with GO as template [98]. The resulted GO-PAN microsheet exhibited preferable electroactivity even in neutral media and displayed excellent electrocatalytic activity toward oxidation of DA, AA, and UA.…”

Section: Simultaneous Determination Of Da Aa and Uamentioning

confidence: 99%

“…Our group is among the first ones to carry out this study utilizing graphene nanocomposite-modified electrodes [97][98][99]. For instance, chitosan-graphene composite was synthesized by direct blending of chitosan and GO followed by an in situ chemical reduction [97].…”

Section: Simultaneous Determination Of Da Aa and Uamentioning

confidence: 99%

Graphene for Glucose, Dopamine, Ascorbic Acid, and Uric Acid Detection

Han

et al. 2014

SpringerBriefs in Molecular Science

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Since every atom in graphene single sheet is a surface atom, molecular interaction and electron transport through graphene can be highly sensitive to adsorbed biomolecules. Graphene materials act as good candidates for glucose sensing due to the high surface area, excellent conductivity, and small band gap, which are favorable for biomolecules loading and electrons conducting. Generally, graphene-based platforms for glucose determination could be categorized into two kinds, namely enzyme catalysis and non-enzyme catalysis. The enzyme catalysis shows high sensitivity and selectivity. However, the inevitable drawbacks of instability originating from the intrinsic nature of the enzyme, as well as the critical operational conditions and complicated immobilization procedure, may limit the analytical applications. These drawbacks could be overcome in non-enzyme catalytic biosensors, which are stable, simple, reliable, and cost-effective. Detailed descriptions are illustrated in the following. The concentrations of dopamine (DA), ascorbic acid (AA), and uric acid (UA) in human body are important in the diagnosis, monitoring, prevention, and treatments of some certain diseases, such as HIV infections, schizophrenia, Parkinson, hyperuricemia, and a type of arthritis. Then various graphene platforms for the detection and quantification of DA, AA, and UA are also demonstrated.Keywords Graphene Á Glucose Á Enzyme Á Dopamine Á Ascorbic acid Á Uric acid Glucose Detection Catalysis by EnzymesGlucose detection plays an important role in biotechnology, life science, food industry, and clinical diagnostics. Diabetes is a worldwide public health problem and one of the leading causes of death and disability in the world. In 2000, it was estimated that 2.8 % of the world population was affected by diabetes mellitus, a disease with hyperglycemia (i.e., elevated blood glucose level) as the major symptom

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“…Nanostructured polyaniline has been chemically synthesized using graphene oxide nanosheets as a polymerization template for adapting the surface of glassy carbon electrodes (300). Using this approach, it was possible to simultaneously differentiate between ascorbic acid, dopamine, and uric acid.…”

Section: Tailoring Nanocomposites For Biomedical Applicationsmentioning

confidence: 99%