Preparation of modified glassy carbon surface with N-(1-H-indole-3yl) methylene thiazole-2-amine and its characterization

Uzun, Demet; Arslan, Halit; Gündüzalp, Ayla Balaban; Hasdemır, Erdoğan

doi:10.1016/j.surfcoat.2013.11.028

Cited by 26 publications

(12 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plots of the anodic peak current ( I pa ) versus square root of scan rate ( v 1 /2 ) was shown in Figure C. Because of the linear relationship over the range, it was suggested that the oxidation reaction of VAN was diffusion‐controlled and its regression equation was found as I pa (μA)=2.0487 v 1/2 +0.0417 (r=0.990) . Figure D shows a linear relationship between the logarithm of scan rates and the logarithm of anodic peak currents, its regression equation was found as log I pa (μA)=0.5182 log ν +0.2509 (r=0.998) ( v in V s −1 ).…”

Section: Resultsmentioning

confidence: 97%

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Calam

Uzun

2019

Electroanalysis

Self Cite

View full text Add to dashboard Cite

Electrochemical oxidation of vanillin (VAN) in the presence of caffeine (CAF) was studied on a gold (Au) electrode modified with 3‐amino‐1,2,4‐triazole‐5‐thiol (ATT) film by using differential pulse voltammetry (DPV) and cyclic voltammetry (CV) method. The formation of the ATT film on the Au electrode surface was characterized by the CV, fourier transform infrared spectroscopy (FTIR) and impedance spectroscopy (EIS) methods. A single irreversible oxidation peak of the VAN was obtained by using the CV method. The determination of VAN in the presence of CAF was carried out at pH 4 in Britton Robinson buffer (BR) by the DPV method. Under the optimal conditions, the oxidation peak current was proportional to the concentration of VAN in the range of 1.1 μM to 76.4 μM in the presence of CAF with the correlation coefficient of 0.997 and the detection limit of 0.19 μM (S/N=3). The selective determination of VAN in a commercial coffee sample was carried out with satisfactory results on the ATT‐Au modified electrode.

show abstract

Section: Resultsmentioning

confidence: 97%

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Calam

Uzun

2019

Electroanalysis

Self Cite

View full text Add to dashboard Cite

show abstract

“…This gradual decreasement is ascribed to progressive passivation. It is beneficial when interested in the oxidation process in the cited potential range …”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of 3‐[(1H‐1,2,4‐triazole‐3‐ylimino)methyl]naphtalene‐2‐ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid

Tatli

Uzun

Calam

et al. 2018

Surface & Interface Analysis

Self Cite

View full text Add to dashboard Cite

A [(1H-1,2,4-triazole-3-ylimino)methyl]naphthalene-2-ol (TMN-2-ol) film modified platinum (Pt) electrode has been fabricated by the electrochemical oxidation in acetonitrile solution. The modified surface was characterized by electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The prepared Pt electrode can be used as a functional interface to sensitive and selective determination of dopamine (DA) in the presence of uric acid (UA) and ascorbic acid (AA) by square wave voltammetry (SWV) method. The limit of detection (LOD) and limit of quantification (LOQ) of DA were 9.25 × 10 −8 and 2.78 × 10 −7 M, respectively. Linear range of DA was found to be between 3.95 × 10 −7 and 4.19 × 10 −6 M.

show abstract

“…The peak current gradually decreases at the consecutive potential cycles and tends to be stable after 25 cycles. This gradual decreasement is attributed to progressive passivation advantage when dealing with oxidation process in the mentioned potential range [21].…”

Section: Preparation Of Modified Gc Electrodementioning

confidence: 95%

“…Each type of electrode indicates its own associated benefits and restrictions. As a modifier compound among the Schiff bases, indole and its derivatives have received more interest because of their benefits of having quietly good thermal stability and high redox activity [20,21]. Indole coated surfaces have some more properties such as selectivity, sensitivity and stability.…”

Section: Introductionmentioning

confidence: 99%

Selective determination of dopamine in the presence of uric acid and ascorbic acid by N,N′-bis(indole-3-carboxaldimine)-1,2-diaminocyclohexane thin film modified glassy carbon electrode by differential pulse voltammetry

Uzun

Gündüzalp

Hasdemır

2015

Journal of Electroanalytical Chemistry

Self Cite

View full text Add to dashboard Cite

Preparation of modified glassy carbon surface with N-(1-H-indole-3yl) methylene thiazole-2-amine and its characterization

Cited by 26 publications

References 74 publications

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Rapid and Selective Determination of Vanillin in the Presence of Caffeine, its Electrochemical Behavior on an Au Electrode Electropolymerized with 3‐Amino‐1,2,4‐triazole‐5‐thiol

Preparation and characterization of 3‐[(1H‐1,2,4‐triazole‐3‐ylimino)methyl]naphtalene‐2‐ol film at the platinum surface for selective voltammetric determination of dopamine in the presence of uric acid and ascorbic acid

Selective determination of dopamine in the presence of uric acid and ascorbic acid by N,N′-bis(indole-3-carboxaldimine)-1,2-diaminocyclohexane thin film modified glassy carbon electrode by differential pulse voltammetry

Contact Info

Product

Resources

About