Investigation of the electrochemical behavior of tizanidine on the surface of glassy carbon electrode modified with multi-walled carbon nanotube/titan yellow–doped polypyrrole

Shahrokhian, Saeed; Shamloofard, Maryam; Salimian, Razieh

doi:10.1016/j.jelechem.2018.06.005

Cited by 13 publications

(4 citation statements)

References 42 publications

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“…4 b exemplifies the progressively inclined CVs during the increased cyclic time, confirms the conversion of a monomer TY-G film into an electro-polymer TY-G film. The obtained poly(TY-G) may have more π–π covalent interactions with the aromatic rings in their polymeric form and provides strong incorporation on the surface of MWCNTPE through hydrophobic interactions 33 . The probable reaction mechanism of electro-polymerization of TY-G on the surface of MWCNTPE is shown in Scheme 1 .…”

Section: Resultsmentioning

confidence: 99%

Electro-oxidation of formoterol fumarate on the surface of novel poly(thiazole yellow-G) layered multi-walled carbon nanotube paste electrode

Hareesha

Manjunatha

2021

Sci Rep

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The current study explicates the electro-oxidation behavior of formoterol fumarate (FLFT) in the presence of uric acid (UA) on the surface of poly thiazole yellow-G (TY-G) layered multi-walled carbon nanotube paste electrode (MWCNTPE). The modified (Poly(TY-G)LMWCNTPE) and unmodified (MWCNTPE) electrode materials were characterized through electrochemical impedance spectroscopy (EIS), field emission scanning electron microscopy (FE-SEM), and cyclic voltammetry (CV) approaches. The characterization data confirms the good conducting and electrocatalytic nature with more electrochemical active sites on the Poly(TY-G)LMWCNTPE than MWCNTPE towards the FLFT analysis in the presence of UA. Poly(TY-G)LMWCNTPE easily separates the two drugs (FLFT and UA) even though they both have nearer oxidation peak potential. The electro-catalytic activity of the developed electrode is fast and clear for FLFT electro-oxidation in 0.2 M phosphate buffer (PB) of pH 6.5. The Poly(TY-G)LMWCNTPE offered a well-resolved peak with the highest electro-oxidation peak current at the peak potential of 0.538 V than MWCNTPE. The potential scan rate and oxidation peak growth time studies show the electrode reaction towards FLFT electro-oxidation is continued through a diffusion-controlled step. The variation of concentration of FLFT in the range from 0.2 to 1.5 µM (absence of UA) and 3.0 to 8.0 μM (presence of UA) provides a good linear relationship with increased peak current and a lower limit of detection (LOD) values of 0.0128 µM and 0.0129 µM, respectively. The prepared electrode gives a fine recovery for the detection of FLFT in the medicinal sample with acceptable repeatability, stability, and reproducibility.

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Section: Resultsmentioning

confidence: 99%

Electro-oxidation of formoterol fumarate on the surface of novel poly(thiazole yellow-G) layered multi-walled carbon nanotube paste electrode

Hareesha

Manjunatha

2021

Sci Rep

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“…Figure 5B shows that there is a good linear relationship between the scanning peak current and the square roots at different scan rate, I/µA = 14.338x + 16.379 (R 2 = 0.9919) and I/µA = −12.360x‐37.369 (R 2 = 0.9978). The correlation coefficient was greater than 0.99; the oxidation process follows the adsorption mechanism and diffusion mechanism, mainly adsorption (Joseph, 2006; Shahrokhian et al., 2018; Ye et al., 2021). Through the Randles–Sevick equation (Chokkareddy et al., 2020; Garcia‐Miranda Ferrari et al., 2018; Kilele et al., 2020):

I_{pa} = 2 . 69 \times 1 0^{5} A C n^{3 / 2} {D_{R}}^{1 / 2} {normalv}^{1 / 2}

where I pa is the peak current of the anode, A is the surface area of the electrode, n is the number of transferred electrons, C is the concentration of the detection solution, D R is the diffusion coefficient, and v is the scan rate.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 5B shows that there is a good linear relationship between the scanning peak current and the square roots at different scan rate, I/µA = 14.338x + 16.379 (R 2 = 0.9919) and I/µA = −12.360x-37.369 (R 2 = 0.9978). The correlation coefficient was greater than 0.99; the oxidation process follows the adsorption mechanism and diffusion mechanism, mainly adsorption (Joseph, 2006;Shahrokhian et al, 2018;Ye et al, 2021).…”

Section: 3mentioning

confidence: 96%

Penicillin biosensor based on rhombus‐shaped porous carbon/hematoxylin/penicillinase

Wang

Xiu

et al. 2021

Journal of Food Science

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In this experiment, we designed an electrochemical sensor using penicillinase (Pen X)-rhombus porous carbon (RPC) as the detection element and hematoxylin as the indicator to detect low concentrations of penicillin sodium (Pen G). A differential pulse voltammetry (DPV) method was used to detect Pen G in the concentration range of 10 -8 -10 -5 mg⋅mL -1 under optimal experimental conditions. The results showed that the peak current value and the logarithm of Pen G concentration showed a good linear relationship (R 2 = 0.9915), and the LOD was 2.68 × 10 -7 mg⋅mL -1 (S/N = 3). The actual milk samples were detected by the addition method and compared with the high-performance liquid phase method; no significant difference was found in the detection results. The working electrode prepared by cross-linking method not only extends the service life of the sensor, but also improves the sensitivity and reproducibility of the sensor. It can also be used to detect the Pen G residue in the actual milk samples repeatedly. Practical Application: In this study, an electrochemical sensor for the rapid detection of penicillin sodium in milk was prepared, which has good sensitivity and fast detection speed.

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“…Titanium yellow, an aromatic anionic compound, can be used to enhance PPY electroactive properties. The polymeric film with sulfonate functional groups provides enhanced conductivity and stability compared to chlorine [ 146 ].…”

Section: Polymers Conjugated Mediators For Direct Electron Transfementioning

confidence: 99%

Recent Advances of Conducting Polymers and Their Composites for Electrochemical Biosensing Applications

Luong

Narayan

Solanki

et al. 2020

JFB

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Conducting polymers (CPs) have been at the center of research owing to their metal-like electrochemical properties and polymer-like dispersion nature. CPs and their composites serve as ideal functional materials for diversified biomedical applications like drug delivery, tissue engineering, and diagnostics. There have also been numerous biosensing platforms based on polyaniline (PANI), polypyrrole (PPY), polythiophene (PTP), and their composites. Based on their unique properties and extensive use in biosensing matrices, updated information on novel CPs and their role is appealing. This review focuses on the properties and performance of biosensing matrices based on CPs reported in the last three years. The salient features of CPs like PANI, PPY, PTP, and their composites with nanoparticles, carbon materials, etc. are outlined along with respective examples. A description of mediator conjugated biosensor designs and enzymeless CPs based glucose sensing has also been included. The future research trends with required improvements to improve the analytical performance of CP-biosensing devices have also been addressed.

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Investigation of the electrochemical behavior of tizanidine on the surface of glassy carbon electrode modified with multi-walled carbon nanotube/titan yellow–doped polypyrrole

Cited by 13 publications

References 42 publications

Electro-oxidation of formoterol fumarate on the surface of novel poly(thiazole yellow-G) layered multi-walled carbon nanotube paste electrode

Electro-oxidation of formoterol fumarate on the surface of novel poly(thiazole yellow-G) layered multi-walled carbon nanotube paste electrode

Penicillin biosensor based on rhombus‐shaped porous carbon/hematoxylin/penicillinase

Recent Advances of Conducting Polymers and Their Composites for Electrochemical Biosensing Applications

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