Version 1
: Received: 26 April 2024 / Approved: 26 April 2024 / Online: 28 April 2024 (03:07:07 CEST)
How to cite:
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes. Preprints2024, 2024041767. https://doi.org/10.20944/preprints202404.1767.v1
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes. Preprints 2024, 2024041767. https://doi.org/10.20944/preprints202404.1767.v1
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes. Preprints2024, 2024041767. https://doi.org/10.20944/preprints202404.1767.v1
APA Style
Shishkanova, T.V., Štěpánková, N., Broncová, G., & Vrňata, M. (2024). Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes. Preprints. https://doi.org/10.20944/preprints202404.1767.v1
Chicago/Turabian Style
Shishkanova, T.V., Gabriela Broncová and Martin Vrňata. 2024 "Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes" Preprints. https://doi.org/10.20944/preprints202404.1767.v1
Abstract
Modification of electrode surface with a selective layer gives the possibility to detect target ana-lytes of forensic interest. 3-(4-trifluoromethyl)-phenyl)-thiophene (ThPhCF3) was deposited on a graphite (G) electrode by electrochemical oxidation and characterized as a receptor for the recognition of synthetic stimulants (2-aminoindane, buphedrone, naphyrone). First, the structural characterization of the polymeric layer were obtained from Raman spectroscopy. Second, the electrochemical profiles of selected synthetic stimulants and their affinity to ThPhCF3/G-modified electrodes were studied using square wave voltammetry and electrochemical impedance spec-troscopy. The values of the adsorption constant show the importance of – PhCF3 groups in the interaction with synthetic stimulants, namely recognition by the formation of hydrogen bonds (Kads (buphedrone) < Kads (2-AI)) and interaction with aromatic H atoms (Kads (buphedrone) < Kads (naphyrone)). It was demonstrated that the polymeric layer derived from thiophene with – PhCF3 group is capable to increase the intensity of the electrochemical signal.
Keywords
thiophene-derivative; electrochemical polymerization; new psychoactive substances
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
