Electrochemical determination of dopamine and ascorbic acid at a novel gold nanoparticles distributed poly(4-aminothiophenol) modified electrode

Gopalan, A.; Lee, Yi–Chia; Manesh, Kalayil Manian; Santhosh, P.; Kim, Jun Heon; Kang, Jae Soo

doi:10.1016/j.talanta.2006.08.026

Cited by 127 publications

(59 citation statements)

References 35 publications

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“…This sensitivity is reasonable given the fact that the sensitivities of the majority of polymer modified dopamine sensors are similar, if not, lower than this. For example, Gopalan et al [36] obtained a sensitivity of 0.22 A M −1 in the presence of ascorbic acid using a poly(4-aminothiophenol) modified electrode embedded with gold nanoparticles while Balamurugan and Chen [37] acquired a sensitivity of 1.0 A M −1 for dopamine using an poly(3,4-ethylenedioxythiophene-co-(5-amino-2-naphthalenesulfonic acid)) modified electrode.…”

Section: Sensitivity Of the Polypyrrole Sulfonatedˇ-cyclodextrin Filmmentioning

confidence: 99%

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

Harley

Rooney

Breslin

2010

Sensors and Actuators B: Chemical

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a b s t r a c t A highly selective dopamine sensor was fabricated by doping polypyrrole with a sulfonated ␤-cyclodextrin. This composite material enabled the selective sensing of dopamine in the presence of a large excess of ascorbic acid and prevented the regeneration of dopamine through the homogeneous catalytic reaction of the ascorbate anion with the dopamine-o-quinone. A single redox wave, corresponding to the oxidation of dopamine, was observed in dopamine/ascorbate mixtures, giving a truly selective dopamine sensor. The limit of detection was measured as 3.2 × 10 −6 M for dopamine.

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Section: Sensitivity Of the Polypyrrole Sulfonatedˇ-cyclodextrin Filmmentioning

confidence: 99%

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

Harley

Rooney

Breslin

2010

Sensors and Actuators B: Chemical

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“…On the other hand, the diffraction characteristic peaks for PEDOT-Au nanocomposite appeared at 2y 38. [8,9,28]. The broadening of XRD peaks suggests the formation of nanocrystallites.…”

Section: Characterization Of Nanometallic Particles/polymer Compositementioning

confidence: 99%

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

Atta¹,

El-Ads²,

Galal³

2015

Handbook of Nanoelectrochemistry

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Self-assembled monolayer (SAM) represents one of the methods to precisely modify surface structures in the nanoscale dimension. It has opened up a new era of exploration and has a profound impact on sensors and biosensors due to its unique properties. Different self-assemblies will be considered in this chapter: SAM of metallic nanoparticles on polymeric film, SAM of surfactant on polymeric film, and SAM of S-containing compounds on nanometallic films. The main goal of this chapter is to present comprehensive collection of the recent achievements in this area. Several issues will be discussed including the morphology, sensitivity, selectivity, stability, and electrochemical properties of the sensor.

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“…Literature reveals that all these important characteristics cannot be inbuilt in a single material. Hence, there is always a demand for the development of composite materials, comprising two or more components, to achieve adequate sensitivity and stability for the biosensors [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Biosensor for Determination of Glucose Based on MWCNTs/ZrO</sub>2</sub>-Pt Nanocomposite

Ibrahim¹,

Alsharif²,

Keshk³

2017

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Abstarct:Multiwalled carbon nanotubes/ZrO 2 -Pt(MWCNTs/ZrO 2 -Pt) composite was synthesized by a chemical route. The structure and composition of the MWCNTs/ZrO 2 -Pt composite were confirmed by means of transmission electron microscopy, and Raman spectroscopy. Due to the good electrochemical activity property of MWCNTs/ZrO 2 -Pt composite, a glucose biosensor was constructed by absorbing glucose oxidase (GOD) on the hybrid material. A direct electron transfer process is observed at the MWCNTs/ZrO 2 -Pt/GOD-modified glassy carbon electrode. The glucose biosensor has a linear range from 4.0 to 24.0 mM, which is suitable for glucose determination by real samples. It should be worthwhile noting that, from 4.0 to 12.0mM, the cathodic peak currents of the biosensor decrease linearly with increasing the glucose concentrations in human blood. Meanwhile, the resulting biosensor can also prevent the effects of interfering species. Moreover, the biosensor exhibits satisfying reproducibility, good operational stability and storage stability. Therefore, the MWCNTs/ZrO 2 -Pt /GOD biocomposite could be promisingly applied to determine blood sugar concentration in the practical clinical analysis.

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Electrochemical determination of dopamine and ascorbic acid at a novel gold nanoparticles distributed poly(4-aminothiophenol) modified electrode

Cited by 127 publications

References 35 publications

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

A Novel Biosensor for Determination of Glucose Based on MWCNTs/ZrO</sub>2</sub>-Pt Nanocomposite

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Electrochemical determination of dopamine and ascorbic acid at a novel gold nanoparticles distributed poly(4-aminothiophenol) modified electrode

Cited by 127 publications

References 35 publications

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

A Novel Biosensor for Determination of Glucose Based on MWCNTs/ZrO&lt;/sub&gt;2&lt;/sub&gt;-Pt Nanocomposite

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Product

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A Novel Biosensor for Determination of Glucose Based on MWCNTs/ZrO</sub>2</sub>-Pt Nanocomposite