The fabrication of a Co (II) complex and multi-walled carbon nanotubes modified glass carbon electrode, and its application for the determination of dopamine

Yang, Linlin; Li, Xi; Xiong, Yan; Liu, Xin; Li, Xiaoyü; Wang, Mengmeng; Yan, Songling; Alshahrani, Lina Abdullah; Liu, Peng; Zhang, Chaocan

doi:10.1016/j.jelechem.2014.07.036

Cited by 27 publications

(5 citation statements)

References 35 publications

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“…On the other hand, the selection of more positive potentials at the region of plateau of current for all phenolic compounds, which is a common practice when a hydrodynamic method (under stirring or flow rate) with amperometric detection is used, revealed that the use of MWCNT-modified electrodes may not be essential for the determination of HQ, TBHQ, CT, and DP because the gain in sensitivity and linear range is not so significant (10 to 40%). The limit of detection values obtained under both amperometric conditions on the SD-MWCNT-modified GCE were estimated as 0.03 (for DP), 0.17 (for CT and HQ) and 0.33 mmol L À1 (for TBHQ), which are within the values verified by previous works using modified electrodes containing CNTs or composites formed by CNTs and other chemical modifiers applied for DP (0.015-1.76 mmol L À1 ) [37,38,[41][42][43][44][45], CT (0.095-2.0 mmol L À1 ) [39,40,[47][48][49][50], HQ (0.02-2.6 mmol L À1 ) [46][47][48][49][50], and TBHQ (0.067-5.0 mmol L À1 ) [51][52][53][54].…”

Section: Electrochemical Measurementssupporting

confidence: 83%

Multi-walled carbon nanotubes: Size-dependent electrochemistry of phenolic compounds

Cardoso

Montes

Lima

et al. 2015

Electrochimica Acta

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Section: Electrochemical Measurementssupporting

confidence: 83%

Multi-walled carbon nanotubes: Size-dependent electrochemistry of phenolic compounds

Cardoso

Montes

Lima

et al. 2015

Electrochimica Acta

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“…To obtain more insight into the adsorptive properties of 4 , we deposited 4 on the GC electrode covered by multi-walled carbon nanotubes (MWCNT). Various macrocyclic compounds have been previously deposited on the surface of MWCNT in order to construct electrocatalytic sensors [ 45 , 46 , 47 , 48 ]. The resultant GC/MWCNT/ 4 was investigated using CV in an aqueous 0.1 M HClO 4 electrolyte ( Figure 8 ).…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Electrochemical and Photochemical Properties of Sulfanyl Porphyrazine with Ferrocenyl Substituents

et al. 2023

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Ferrocene is useful in modern organometallic chemistry due to its versatile applications in material sciences, catalysis, medicinal chemistry, and diagnostic applications. The ferrocene moiety can potentially serve many purposes in therapeutics and diagnostics. In the course of this study, (6-bromo-1-oxohexyl)ferrocene was combined with dimercaptomaleonitrile sodium salt to yield a novel maleonitrile derivative. Subsequently, this compound was subjected to an autocyclotetramerization reaction using the Linstead conditions in order to obtain an octaferrocenyl-substituted magnesium(II) sulfanyl porphyrazine. Following that, both compounds—the maleonitrile derivative and the porphyrazine derivative—were subjected to physicochemical characterization using UV-Vis, ES-TOF, MALDI-TOF, and one-dimensional and two-dimensional NMR spectroscopy. Moreover, the sulfanyl porphyrazine was subjected to various photophysical studies, including optical absorption and emission measurements, as well as the evaluation of its photochemical properties. Values of singlet oxygen generation quantum yields were obtained in different organic solvents. The electrochemical properties of the synthesized compounds were studied using cyclic voltammetry. According to the electrochemical results, the presence of electron-withdrawing oxohexyl groups attached to ferrocene afforded significantly more positive oxidation potentials of the ferrocene-based redox process up to 0.34 V vs. Fc+/Fc.

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“…Dopamine (DA) is a naturally occurring catecholamine that plays crucial role in the function of cardiovascular, central nervous, renal and hormonal systems and its anomalous concentration cause numerous problems like Parkinson's disease, neurological disorder, drug addiction and Schizophrenia [1][2][3][4][5][6][7]. Therefore, searching an appropriate method for sensitive determination of DA is of great importance in the biological diagnosis.…”

Section: Introductionmentioning

confidence: 99%

“…Different pervious works have been reported for determination of DA. To mention some of them: chromatography [8,9], spectrophotometry [10][11][12], fluorescence [13], chemiluminescence [14,15], and electroanalysis [1][2][3][4][5][6][16][17][18][19]. Electrochemical techniques have attracted great concern over other analytical methods as the analysis is fast, low in cost, high accuracy and low detection limit [1][2][3][4][5][6][7]20].…”

Section: Introductionmentioning

confidence: 99%

“…Based on this property, to detect DA selectively in the presence of other electroactive ionic species different methods have been developed [25,26]. Modification of the working electrode with substances like: metal and metal oxide nanoparticles [6,27], carbon based materials [2,5,28], quantum dots (QDs) [3], polypyrrole [4,29], and nanocomposite [ fabrication of biosensors for sensitive and selective detection of DA. electrochemical signal for DA many of the sensors have used the cataly modifiers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective electrochemical determination of dopamine at p-nitroaniline film-hole modified glassy carbon electrodes

Olana¹,

Kitte²,

Geletu³

et al. 2018

Bull. Chem. Soc. Eth.

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ABSTRACT. Herein, we report determination of dopamine (DA) at modified glassy carbon electrode (GCE) with a film produced by reduction of diazonium generated from p-nitroaniline (PNA). Pores were created purposely by stripping pre-deposited gold nanoparticles (AuNPs) in the modifier film. The modified electrodes were characterized electrochemically by common redox probes: hydroquinone (HQ), hexacyanoferrate [(Fe(CN) . Comparison was made for the cyclic voltammetric and amperometric response of DA using the modified electrodes against the bare GCE in phosphate buffer solution (PBS) of pH 7.5. The bare and modified GCE showed a linear response to DA in the concentration range of 0.2-2.2 mM and 5-35 µM with detection limit of 0.015 mM and 0.6112 µM, respectively. The modified electrode showed high sensitivity, well selectivity, good anti-interference ability, durable stability and good electrode reproducibility for determining DA. The reported modified electrode is a promising sensor for use in electroanalysis of DA.

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The fabrication of a Co (II) complex and multi-walled carbon nanotubes modified glass carbon electrode, and its application for the determination of dopamine

Cited by 27 publications

References 35 publications

Multi-walled carbon nanotubes: Size-dependent electrochemistry of phenolic compounds

Multi-walled carbon nanotubes: Size-dependent electrochemistry of phenolic compounds

Synthesis, Electrochemical and Photochemical Properties of Sulfanyl Porphyrazine with Ferrocenyl Substituents

Selective electrochemical determination of dopamine at p-nitroaniline film-hole modified glassy carbon electrodes

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