Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate

The influence of sodium 4-vinylbenzenesulfonate on the electrooxidation of phenols and naphthols was studied in dimethylformamide (DMF). The usually observed deactivation of phenol in non-aqueous environments was suppressed upon addition of sodium 4-vinylbenzenesulfonate, and signals of all studied...

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Main Authors: László Kiss, András Kiss
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Chemistry
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Online Access:https://www.mdpi.com/2624-8549/7/3/69
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author László Kiss
András Kiss
author_facet László Kiss
András Kiss
author_sort László Kiss
collection DOAJ
description The influence of sodium 4-vinylbenzenesulfonate on the electrooxidation of phenols and naphthols was studied in dimethylformamide (DMF). The usually observed deactivation of phenol in non-aqueous environments was suppressed upon addition of sodium 4-vinylbenzenesulfonate, and signals of all studied compounds were highlighted due to the diminished background current. As in other cases, the latter is attributable to the solvent. The 4-vinylbenzenesulfonate salt underwent electroinitiated polymerization close to the electrode surface excluding all other compounds from it within the timescale of the measurements. The polymeric products were partially removed by dissolution; therefore, improved signal reproducibilities could be reached. The investigation was extended to pulsed voltammetric techniques widely used in analytical chemistry (differential pulse, normal pulse, square wave voltammetry). Among these techniques, differential pulse voltammetry showed the best performance. Therefore, during its use, the analytical usefulness of adding the unsaturated additive in optimal concentration was estimated in the case of some phenols and naphthols. Successful calibration for picric acid was attained in DMF.
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spelling doaj-art-d0bd4ce90e794b75acba8cf2644a72c42025-08-20T03:27:29ZengMDPI AGChemistry2624-85492025-04-01736910.3390/chemistry7030069Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-VinylbenzenesulfonateLászló Kiss0András Kiss1Institut of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Pécs, Honvéd Street 1, H-7624 Pécs, HungaryDepartment of Physical Chemistry and Materials Science, Faculty of Sciences, University of Pécs, Ifjúság Útja 6, H-7624 Pécs, HungaryThe influence of sodium 4-vinylbenzenesulfonate on the electrooxidation of phenols and naphthols was studied in dimethylformamide (DMF). The usually observed deactivation of phenol in non-aqueous environments was suppressed upon addition of sodium 4-vinylbenzenesulfonate, and signals of all studied compounds were highlighted due to the diminished background current. As in other cases, the latter is attributable to the solvent. The 4-vinylbenzenesulfonate salt underwent electroinitiated polymerization close to the electrode surface excluding all other compounds from it within the timescale of the measurements. The polymeric products were partially removed by dissolution; therefore, improved signal reproducibilities could be reached. The investigation was extended to pulsed voltammetric techniques widely used in analytical chemistry (differential pulse, normal pulse, square wave voltammetry). Among these techniques, differential pulse voltammetry showed the best performance. Therefore, during its use, the analytical usefulness of adding the unsaturated additive in optimal concentration was estimated in the case of some phenols and naphthols. Successful calibration for picric acid was attained in DMF.https://www.mdpi.com/2624-8549/7/3/69phenolsnaphtholssodium 4-vinylbenzenesulfonatedimethyl formamidecyclic voltammetrypulsed voltammetric techniques
spellingShingle László Kiss
András Kiss
Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
Chemistry
phenols
naphthols
sodium 4-vinylbenzenesulfonate
dimethyl formamide
cyclic voltammetry
pulsed voltammetric techniques
title Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
title_full Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
title_fullStr Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
title_full_unstemmed Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
title_short Pulsed and Cyclic Voltammetric Studies of Phenols and Naphthols in Dimethylformamide in Presence of Sodium 4-Vinylbenzenesulfonate
title_sort pulsed and cyclic voltammetric studies of phenols and naphthols in dimethylformamide in presence of sodium 4 vinylbenzenesulfonate
topic phenols
naphthols
sodium 4-vinylbenzenesulfonate
dimethyl formamide
cyclic voltammetry
pulsed voltammetric techniques
url https://www.mdpi.com/2624-8549/7/3/69
work_keys_str_mv AT laszlokiss pulsedandcyclicvoltammetricstudiesofphenolsandnaphtholsindimethylformamideinpresenceofsodium4vinylbenzenesulfonate
AT andraskiss pulsedandcyclicvoltammetricstudiesofphenolsandnaphtholsindimethylformamideinpresenceofsodium4vinylbenzenesulfonate