Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary. Chemosensors2024, 12, 99.
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary. Chemosensors 2024, 12, 99.
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary. Chemosensors2024, 12, 99.
Shishkanova, T.V.; Štěpánková, N.; Broncová, G.; Vrňata, M. Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary. Chemosensors 2024, 12, 99.
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:
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