Determination of dopamine in the presence of high concentration of ascorbic acid by using gold cysteamine self-assembled monolayers as a nanosensor

Shervedani, Reza Karimi; Bagherzadeh, Mojtaba; Mozaffari, M.

doi:10.1016/j.snb.2005.10.027

Cited by 164 publications

(94 citation statements)

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“…These results may be rationalized as follows. Dopamine (DAH + ) is protonated (pK a 8.9) [71] in the buffer solution employed in this study. Since the AET SAM is known [70] to be positively charged at ≤pH 7.6, then the relatively more positive anodic oxidation peak potential …”

Section: Electrochemical Impedance Spectroscopic Investigationsmentioning

confidence: 99%

Insights into the surface and redox properties of single-walled carbon nanotube—cobalt(II) tetra-aminophthalocyanine self-assembled on gold electrode

Ozoemena

Nyokong

Nkosi

et al. 2007

Electrochimica Acta

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Section: Electrochemical Impedance Spectroscopic Investigationsmentioning

confidence: 99%

Insights into the surface and redox properties of single-walled carbon nanotube—cobalt(II) tetra-aminophthalocyanine self-assembled on gold electrode

Ozoemena

Nyokong

Nkosi

et al. 2007

Electrochimica Acta

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“…The modified carbon paste electrode is able to separate two well-defined peaks of DA and AA on 0.067 and 0.139 mV respectively [60]. The Figure 8a shows that the concentration of DA was varied from (10 × 10 -6 to 90 × 10 -6 M) by keeping AA remains constant at SAOS MCPE.…”

Section: Simultaneous Determination Of Da and Aa By Dpv Techniquementioning

confidence: 98%

Sodium Alpha Olefin Sulfonate Modified Carbon Paste Electrode Sensor for Dopamine: A Voltammetric Study

Cc¹,

Be²

2016

Insights Anal Electrochem

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Sodium alpha olefin sulfonate, an anionic surfactant was modified in carbon paste electrode by immobilization technique. The surfactant modified carbon paste electrode (SAOS/MCPE) was applied for the electrochemical determination of dopamine. The modified electrode shows excellent electrocatalytic property towards DA at pH 7.2 in Phosphate Buffer solution (PBS). The effects of scan rate and concentration of dopamine was studied and the electrode process was adsorptioncontrolled processes. The modified electrode resolves the well-defined two peaks for dopamine and ascorbic acid which is absent for bare carbon paste electrode and simultaneous studies was studied by cyclic and differential pulse voltammetric techniques. The detection limit was found to be 1.051 × 10 -6 M respectively and the modified electrode shows good sensitivity and selectivity for dopamine.

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“…This approach has been used by us and others as a means of assembling selective voltammetric electrodes. [12][13][14][15][16][17][18][19][20][21][22][23][24][25] For example, Turyan and Mandler accomplished the selective extraction and determination of Cr(VI) was accomplished using a 4-mercaptoethylpyridinium monolayer [26] on Au. Pyridinium groups are known to form strong complexes with chromates and were the driving force for the high selectivity that was found.…”

Section: Self-assembled Monolayers (Sams)mentioning

confidence: 99%

Formation, Characterization, and Applications of Organic and Inorganic Nanometric Films

Mandler

2010

Israel Journal of Chemistry

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The formation of thin coatings based on either self‐assembled monolayers or polymeric films is discussed. These coatings are used to structure surfaces and control their physical and chemical properties. Different examples are given from our work emphasizing the advantages of monolayers and polymeric films. Finally, different approaches, which benefit from both monolayers and polymeric films, are presented.

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Determination of dopamine in the presence of high concentration of ascorbic acid by using gold cysteamine self-assembled monolayers as a nanosensor

Cited by 164 publications

References 50 publications

Insights into the surface and redox properties of single-walled carbon nanotube—cobalt(II) tetra-aminophthalocyanine self-assembled on gold electrode

Insights into the surface and redox properties of single-walled carbon nanotube—cobalt(II) tetra-aminophthalocyanine self-assembled on gold electrode

Sodium Alpha Olefin Sulfonate Modified Carbon Paste Electrode Sensor for Dopamine: A Voltammetric Study

Formation, Characterization, and Applications of Organic and Inorganic Nanometric Films

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