The electrochemical behavior of some podands at a benzo[c]cinnoline modified glassy carbon electrode

İsbir, Aybüke A.; Solak, Alı Osman; Üstündağ, Zafer; Bіlge, Selen; Natsagdorj, Amgalan; Kılıç, Emine Zinnur; Kılıç, Zeynel

doi:10.1016/j.aca.2005.02.049

Cited by 22 publications

(13 citation statements)

References 20 publications

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“…As seen in Figure 1, the irreversible peak current decreases as the number of potential cycles increases, as discussed in our previous paper [20]. This type of current-potential curves are very characteristic for the electrochemical reduction of diazonium salts at carbon or metal electrodes either in aprotic or in aqueous media [27,29,30]. The peak current decreases in each potential cycle and reaches to almost a steady state value after 4 cycles.…”

Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 82%

“…2BCC molecules were attached to the carbon surface by covalent bonds. The reaction path of derivatization between GC surface and the 2BCC-DAS is believed to fallow the radicalic mechanism as a result of the reduction of 2BCC diazonium salt as described in our previous paper [27]. Figure 1 shows the cyclic voltammetric derivatization curves obtained in 1 mM 2BCC-DAS solution in acetonitrile containing 0.1 M TBATFB as supporting electrolyte.…”

Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 96%

“…Gradual decrease in peak current implies that the formation of the 2BCC layer proceeds at the underivatized GC surface left in the previous scans. Explanation of the potential shifts towards the negative values for the successive scans was discussed by İsbir et al [27].…”

Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 96%

“…Present work is the extension of our earlier study that showed the possibility of covalent modification of glassy carbon (GC) surfaces by 2-benzo[c]cinnoline using the reduction of its diazonium salt in acetonitrile [27]. Surfaces with covalent modification are known to be very stable and show catalytic effects towards many organic and inorganic species and also biomolecules.…”

Section: Introductionmentioning

confidence: 97%

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Characterization of a 2‐Benzo[c]cinnoline Modified Glassy Carbon Electrode by Raman Spectroscopy, Electrochemical Impedance Spectroscopy, and Ellipsometry

et al. 2008

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This work describes the characterization of the grafted 2-benzo[c]cinnoline (2BCC) molecules at a glassy carbon (GC) electrode surface by voltammetry and spectroscopy. Attachment of the molecule to the carbon substrate was achieved by the electrochemical reduction of 2-benzo[c]cinnoline diazonium salt (2BCC-DAS). GC electrode modification was carried out in aprotic solution with 2BCC diazonium salt. Dopamine (DA) and ascorbic acid (AA) were used to prove the surface modification to see the blockage of the electron transfer. The presence of 2BCC at the GC electrode surface was characterized by cyclic voltammetry and Raman spectroscopy. Raman spectroscopy was used to monitor molecular bound properties of the adsorbates at the 2BCC-GC surface and confirm the attachment of 2BCC molecules onto the GC surface. The thickness of the 2BCC film on GC was also investigated by ellipsometric measurement.

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Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 82%

Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 96%

Section: -Benzo[c]cinnoline-modified Glassy Carbon Electrodesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Characterization of a 2‐Benzo[c]cinnoline Modified Glassy Carbon Electrode by Raman Spectroscopy, Electrochemical Impedance Spectroscopy, and Ellipsometry

et al. 2008

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“…It has been found that the process may be even more successfully and economically performed with podands. Electrochemical behaviors of podands have been investigated and proposed upon their electrochemical reaction mechanism (Isbir et al 2005). Some podands were utilized as membrane active components or modifying agents to prepare silver selective polymeric membrane electrodes (Chung et al 1997) and modified carbon paste electrodes (Kwang et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Elucidation of Mercury Ion Binding Property of a New Aryl Amide Type Podand by Electrochemical and Fluorescence Measurements

et al. 2009

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A new aryl amide type podand (AAP), 1,8-bis(o-amidophenoxy)-3,6-dioxaoctane, was synthesized and its mercury ion binding property was elucidated by electrochemical and fluorescence measurements. The effects of supporting electrolyte, pH and scan rate on the electroreduction of AAP and on cyclic voltommogram of mercury ion were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). It was observed that the complex formation between AAP and mercury ion exhibited pH-dependent behavior in different electrolyte solutions. Elucidation of such properties makes the AAP intriguing candidates as a modifying agent in sensor application for determination of mercury ion in mixture of aqueous solution.

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Electrocatalytic Oxidation and Determination of Dopamine in the Presence of Ascorbic Acid and Uric Acid at a Poly (4‐(2‐Pyridylazo)‐Resorcinol) Modified Glassy Carbon Electrode

Chen

Zhang²,

Lin

et al. 2007

Electroanalysis

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A sensitive and selective electrochemical method for the determination of dopamine (DA) was developed using a 4-(2-Pyridylazo)-Resorcinol (PAR) polymer film modified glassy carbon electrode (GCE). The PAR polymer film modified electrode shows excellent electrocatalytic activity toward the oxidation of DA in a phosphate buffer solution (PBS) (pH 4.0). The linear range of 5.0 Â 10 À6 -3.0 Â 10 À5 M and detection limit of 2.0 Â 10 À7 M were observed. Simultaneous detection of AA, DA and UA has also been demonstrated on the modified electrode. This work provides a simple and easy approach to selective detection of DA in the presence of AA and UA.Keywords: Poly-PAR modified GCE, Electrocatalysis, DA, UA, AA DOI: 10.1002/elan.200603755 DA is an important neurotransmitter molecule of catecholamines. It plays a very important role in the functioning of central nervous, renal, hormonal and cardiovascular systems [1]. Its deficiency will lead to brain disorder such as Parkinsons disease and schizophrenia [2 -4]. UA is the primary end product of purine metabolism. Its abnormal concentration levels will lead to several diseases such as hyperuricemia and gout. Other diseases such as leukemia and pneumonia are also associated with enhanced urate levels [5]. AA is the agent which prevents scurvy and is known to take part in several biological reactions. DA, UA and AA usually coexist in physiological samples. Therefore, the development of voltammetric sensors for detection UA, DA and AA of neurotransmitters in the extracellular fluid of the central nervous system has received much interest during the past few decades.It is generally believed that direct redox reactions of these species at bare electrodes are irreversible and high overpotentials are usually required for their amperometric detections. Moreover, the direct redox reactions of these species take place at very similar potentials and often suffer from a pronounced fouling effect, which results in rather poor selectivity and reproducibility. The ability to determine DA, UA and AA selectively has been a major goal of electroanalytical researches [6]. Various approaches have been attempted to solve the problems encountering in simultaneous determination of DA, UA and AA [7 -16]. For example, Nafion [15], poly(ester sulfonic acid) [16], and poly(4-vinylpyridine) [14] modified electrodes have been proposed to detect DA in the presence of AA and UA.However, the drawbacks of these ion exchange membrane modified electrodes are their memory effect, non-uniform thickness and poor reproducibility arising from the solvent evaporation method used in the film preparation [17]. Polymer-modified electrodes prepared by electropolymerization have received extensive interest in the detection of analytes because of its high selectivity and sensitivity due to the film homogeneity in electrochemical deposition, strong adherence to the electrode surface and chemical stability of the films [18,19]. Fabrication of conducting polymer films is flexible and controllable, and hence it p...

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The electrochemical behavior of some podands at a benzo[c]cinnoline modified glassy carbon electrode

Cited by 22 publications

References 20 publications

Characterization of a 2‐Benzo[c]cinnoline Modified Glassy Carbon Electrode by Raman Spectroscopy, Electrochemical Impedance Spectroscopy, and Ellipsometry

Characterization of a 2‐Benzo[c]cinnoline Modified Glassy Carbon Electrode by Raman Spectroscopy, Electrochemical Impedance Spectroscopy, and Ellipsometry

Elucidation of Mercury Ion Binding Property of a New Aryl Amide Type Podand by Electrochemical and Fluorescence Measurements

Electrocatalytic Oxidation and Determination of Dopamine in the Presence of Ascorbic Acid and Uric Acid at a Poly (4‐(2‐Pyridylazo)‐Resorcinol) Modified Glassy Carbon Electrode

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