2008
DOI: 10.1002/cjoc.200890165
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Simultaneous Detection of Dopamine and Uric Acid under Coexistence of Ascorbic Acid with DNA/Pt Nanocluster Modified Electrode

Abstract: A novel biosensor by electrochemically codeposited Pt nanoclusters and DNA film was constructed and applied to detection of dopamine (DA) and uric acid (UA) in the presence of high concentration ascorbic acid (AA). Scanning electron microscopy and X-ray photoelectron spectroscopy were used for characterization. This electrode was successfully used to resolve the overlapping voltammetric response of DA, UA and AA into three well-defined peaks with a large anodic peak difference (ΔE pa ) of about 184 mV for DA a… Show more

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Cited by 8 publications
(2 citation statements)
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“…The size, composition and even 3-D configuration of the surface deposited micro-/nano-particles may be important for catalytic functioning of the modifier. 20,21 Although the sensors based on Cu(II) oxide modification have been reported in the literature, the surface composition and morphology of the modifier has never been well characterized. In this report, we re-investigated the electrochemical deposition process of copper oxides on glassy carbon electrode for construction of an electrochemical sensor, and found an electrochemical method for a phase transition of the copper oxide deposited on the electrode surface and finally fabricated a high performance electrochemical sensor for anodic determination of H 2 O 2 .…”
Section: Introductionmentioning
confidence: 99%
“…The size, composition and even 3-D configuration of the surface deposited micro-/nano-particles may be important for catalytic functioning of the modifier. 20,21 Although the sensors based on Cu(II) oxide modification have been reported in the literature, the surface composition and morphology of the modifier has never been well characterized. In this report, we re-investigated the electrochemical deposition process of copper oxides on glassy carbon electrode for construction of an electrochemical sensor, and found an electrochemical method for a phase transition of the copper oxide deposited on the electrode surface and finally fabricated a high performance electrochemical sensor for anodic determination of H 2 O 2 .…”
Section: Introductionmentioning
confidence: 99%
“…The most popular modifiers are carbon nanotubes [1,3], polymers [4][5][6], and metal nanoparticles [7][8][9], as well as nanoparticles incorporated with biomolecules [10][11][12] or with carbon nanotubes [13]. The complex ity of the majority of modification procedures, espe cially in the case of nanotubes and biomolecules, and practical difficulties in the storage and handling of electrodes modified by complicated multicomponent systems, make the most effective and selective meth ods of AA and DA simultaneous determination unat tractive from the practical point of view.…”
mentioning
confidence: 99%