Electrochemical Investigation of Paracetamol at Poly(Glycine) Modified Carbon Paste Electrode: A Voltametric Study

Be, Kumara Swamy

doi:10.4172/2155-9872.1000260

J Anal Bioanal Tech

2015

DOI: 10.4172/2155-9872.1000260

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Electrochemical Investigation of Paracetamol at Poly(Glycine) Modified Carbon Paste Electrode: A Voltametric Study

Kumara Swamy Be¹

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Cited by 3 publications

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“…Such aunique packing (supramolecular structure) gives polyglycine-II attractive mechanical properties. [2d] Polyglycine is used for developing modified electrodes for electrochemical sensing of various chemicals, [5] solid pH sensor [6] and improving the properties of thermoplastics. [7] In addition, polyglycine domains in natural proteins such as silk are shown to play important role in the mechanical properties of such proteins.…”

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confidence: 99%

Spontaneous Single‐Crystal‐to‐Single‐Crystal Evolution of Two Cross‐Laminated Polymers

Athiyarath

Sureshan

2018

Angew Chem Int Ed

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Twocases of spontaneous evolution of monomers to linear polymers having novel cross-laminated topology are reported. We synthesized two peptide monomers N 3 -Gly-Gly-NH-CH 2 -CCH and N 3 -Gly-Gly-Gly-CH 2 -CCH and solved their crystal structures by single-crystal X-raydiffraction. They adopt H-bonded crisscrossed layered packing in their crystals such that:( a) the monomers are aligned head-to-tail in 1Dchain-like arrays and parallel arrangement of such arrays forms al ayer;( b) the proximally placed azide and alkyne motifs are in an orientation apt for their regiospecific cycloaddition;( c) each monomer having xp eptide bonds is Hbonded with 2x monomers disposed in intersecting arrangement, which pre-organize1 D-chain-like arrays in adjacent layers in perpendicular orientation. These crystals underwent spontaneous single-crystal-to-single-crystal (SCSC) polymerization via azide-alkyne cycloaddition reaction to form triazolyl-polyglycines,a tr oom temperature.T he crisscrossed arrangement of monomers in adjacent layers ensured the formation of cross-laminated polymers.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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confidence: 99%

Spontaneous Single‐Crystal‐to‐Single‐Crystal Evolution of Two Cross‐Laminated Polymers

Athiyarath

Sureshan

2018

Angew Chem Int Ed

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Surface Modification of Carbon Paste Electrode with Nano-Structured Modifiers: Application for Sub-Nano-Sensing of Paracetamol

Atta

El-Ads

Hassan³

et al. 2017

J. Electrochem. Soc.

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A new composite for electrochemical sensing of a pain reliever drug, paracetamol (APAP), has been fabricated based on gold nanoparticles/carbon nanotubes/ionic liquid crystal modified carbon paste electrode (AuCNTILCCP). This modification improved the sensor characteristics in terms of fast electron transfer rate, high sensitivity, good selectivity and noticeably low detection limit. Inclusion of different ionic liquids proved less effective toward the electrochemical oxidation of APAP compared to ionic liquid crystal used in this study. The composite electrode (AuCNTILCCP) was successfully used for the determination of APAP in presence of common interfering compounds such as ascorbic acid, dopamine, tryptophan and terazosin. The composite electrode was directly used for direct determination of APAP in urine and drug formulation samples. Linear dynamic range was obtained for the calibration curve in urine from 4 nmol L−1 to 0.09 μmol L−1; detection limit: 0.051 nmol L−1; quantification limit: 0.17 nmol L−1; R2: 0.996 and sensitivity: 413 μA/ μmol L−1. Figures of merits for the sensor performance including: stability, reproducibility, repeatability, robustness, and precision are reported.

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Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Tablets

Mbokou

Pontié

Bouchara

et al. 2016

International Journal of Electrochemistry

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Electrochemical determination of acetaminophen (APAP) was successfully performed using a carbon paste electrode (CPE) modified with coffee husks (CH-CPE). Scanning electron microscopy (SEM) and SEM-energy dispersive X-ray spectroscopy (SEM-EDX) were, respectively, used for the morphological and elemental characterization of coffee husks prior to their utilization. The electrochemical oxidation of APAP was investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and square wave voltammetry (SWV). SWV technique appeared to be more sensitive since the oxidation current of APAP was twofold higher with the CH-CPE sensor than with the bare CPE, in relation to the increase in the organophilic character of the electrode surface. Furthermore, on CH-CPE, the current response of APAP varied linearly with its concentration in the range of 6.6 μM to 0.5 mM, leading to a detection limit of 0.66 μM (S/N=3). Finally, the proposed CH-CPE sensor was successfully used to determine the amount of APAP in commercialized tablets (Doliprane® 500 and Doliprane 1000), with a recovery rate ranging from 98% to 103%. This novel sensor opens the way for the development of low-cost and reliable devices for the electroanalysis of pharmaceutical formulations in developing countries.

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Electrochemical Investigation of Paracetamol at Poly(Glycine) Modified Carbon Paste Electrode: A Voltametric Study

Cited by 3 publications

References 0 publications

Spontaneous Single‐Crystal‐to‐Single‐Crystal Evolution of Two Cross‐Laminated Polymers

Spontaneous Single‐Crystal‐to‐Single‐Crystal Evolution of Two Cross‐Laminated Polymers

Surface Modification of Carbon Paste Electrode with Nano-Structured Modifiers: Application for Sub-Nano-Sensing of Paracetamol

Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Tablets

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