A novel approach to distinguish coumaric isomers using Briggs-Rauscher electrochemical oscillator.
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| Title: | A novel approach to distinguish coumaric isomers using Briggs-Rauscher electrochemical oscillator. |
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| Authors: | Uddin, Waqar1,2 (AUTHOR) vickyfuelche@yahoo.com, Alanazi, Abdullah K.3 (AUTHOR), Khan, Junaid4 (AUTHOR), Khan, Mubashir Ali5 (AUTHOR) |
| Source: | Journal of Applied Electrochemistry. Sep2025, Vol. 55 Issue 9, p2533-2540. 8p. |
| Subjects: | Coumarin derivatives, Hydroxycinnamic acids, Electrochemical analysis, Oscillating chemical reactions, Oxidizing agents, Perturbation theory, Structural analysis (Science) |
| Abstract: | Arrangement of atoms in compounds leads to a variety of products (isomers), which can exhibit different responses due to physical and chemical vulnerabilities. Measuring the vulnerability of such isomers of single compound using cost-effective methodologies are embracing. Forgoing-in-view, an attempt has been made to distinguish between two positional isomers, o-Coumaric acid (o-CA) and p-Coumaric acid (p-CA) based on their perturbation effects using a novel Briggs-Rauscher (BR) electrochemical oscillating system (H2SO4–CH₂(COOH)₂–KI–H2O2 & tetra-aza-macrocyclic Ni-Complex catalyst ([NiL](ClO4)2) is proposed in this article. The ligand "L" in [NiL](ClO4)2 is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene which is highly vulnerable to external perturbation due the presence of pi-bond. Experimental results show that adding equal amounts of the same concentrations of o-CA & p-CA separately into the active BR electrochemical oscillator could temporarily cease the oscillations, which then regenerate after inhibition time (tin). However, the tin caused by the o-CA is longer compared to the tin initiated by p-CA. Moreover, when tin was plotted against the concentrations of o-CA & p-CA, two distinct linear regression curves were obtained for these isomers over the concentration range of 2.3 × 10–5 mol L−1 ~ 2.5 × 10–4 mol L−1, with a correlation coefficient of 0.98, clearly demonstrating the different behaviors of these isomers. Thus, the isomers were successfully distinguished. A mechanistic approach based on Furrow-Cervellati-Amadori (FCA) and Noyes-Field (NF) models was designed and justify the ceasing and regeneration of typical oscillations due to perturbation. Briefly, the intermediate species, HOO⋅ (hydroperoxyl radical), produced during the course of oscillatory reactions, oxidizes additives into their respective quinones. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Applied Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 187459625 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A novel approach to distinguish coumaric isomers using Briggs-Rauscher electrochemical oscillator. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Uddin%2C+Waqar%22">Uddin, Waqar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> vickyfuelche@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Alanazi%2C+Abdullah+K%2E%22">Alanazi, Abdullah K.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khan%2C+Junaid%22">Khan, Junaid</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khan%2C+Mubashir+Ali%22">Khan, Mubashir Ali</searchLink><relatesTo>5</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Applied+Electrochemistry%22">Journal of Applied Electrochemistry</searchLink>. Sep2025, Vol. 55 Issue 9, p2533-2540. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Coumarin+derivatives%22">Coumarin derivatives</searchLink><br /><searchLink fieldCode="DE" term="%22Hydroxycinnamic+acids%22">Hydroxycinnamic acids</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Oscillating+chemical+reactions%22">Oscillating chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidizing+agents%22">Oxidizing agents</searchLink><br /><searchLink fieldCode="DE" term="%22Perturbation+theory%22">Perturbation theory</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+analysis+%28Science%29%22">Structural analysis (Science)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Arrangement of atoms in compounds leads to a variety of products (isomers), which can exhibit different responses due to physical and chemical vulnerabilities. Measuring the vulnerability of such isomers of single compound using cost-effective methodologies are embracing. Forgoing-in-view, an attempt has been made to distinguish between two positional isomers, o-Coumaric acid (o-CA) and p-Coumaric acid (p-CA) based on their perturbation effects using a novel Briggs-Rauscher (BR) electrochemical oscillating system (H2SO4–CH₂(COOH)₂–KI–H2O2 & tetra-aza-macrocyclic Ni-Complex catalyst ([NiL](ClO4)2) is proposed in this article. The ligand "L" in [NiL](ClO4)2 is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene which is highly vulnerable to external perturbation due the presence of pi-bond. Experimental results show that adding equal amounts of the same concentrations of o-CA & p-CA separately into the active BR electrochemical oscillator could temporarily cease the oscillations, which then regenerate after inhibition time (tin). However, the tin caused by the o-CA is longer compared to the tin initiated by p-CA. Moreover, when tin was plotted against the concentrations of o-CA & p-CA, two distinct linear regression curves were obtained for these isomers over the concentration range of 2.3 × 10–5 mol L−1 ~ 2.5 × 10–4 mol L−1, with a correlation coefficient of 0.98, clearly demonstrating the different behaviors of these isomers. Thus, the isomers were successfully distinguished. A mechanistic approach based on Furrow-Cervellati-Amadori (FCA) and Noyes-Field (NF) models was designed and justify the ceasing and regeneration of typical oscillations due to perturbation. Briefly, the intermediate species, HOO⋅ (hydroperoxyl radical), produced during the course of oscillatory reactions, oxidizes additives into their respective quinones. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Applied Electrochemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10800-025-02317-x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 2533 Subjects: – SubjectFull: Coumarin derivatives Type: general – SubjectFull: Hydroxycinnamic acids Type: general – SubjectFull: Electrochemical analysis Type: general – SubjectFull: Oscillating chemical reactions Type: general – SubjectFull: Oxidizing agents Type: general – SubjectFull: Perturbation theory Type: general – SubjectFull: Structural analysis (Science) Type: general Titles: – TitleFull: A novel approach to distinguish coumaric isomers using Briggs-Rauscher electrochemical oscillator. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Uddin, Waqar – PersonEntity: Name: NameFull: Alanazi, Abdullah K. – PersonEntity: Name: NameFull: Khan, Junaid – PersonEntity: Name: NameFull: Khan, Mubashir Ali IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 0021891X Numbering: – Type: volume Value: 55 – Type: issue Value: 9 Titles: – TitleFull: Journal of Applied Electrochemistry Type: main |
| ResultId | 1 |
