Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43928946" target="_blank" >RIV/60461373:22340/24:43928946 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3390/chemosensors12060099" target="_blank" >https://doi.org/10.3390/chemosensors12060099</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/chemosensors12060099" target="_blank" >10.3390/chemosensors12060099</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary

Popis výsledku v původním jazyce

Modification of an electrode surface with a selective layer leads to amplification of theelectrochemical signal. A film derived from electrochemically oxidized 3-(4-trifluoromethyl)-phenyl)-thiophene deposited on a graphite electrode (ThPhCF3/G) was used to estimate the affinity forsynthetic stimulants (2-aminoindane, buphedrone, naphyrone) using a combination of square wavevoltammetry and electrochemical impedance spectroscopy. The modified surface was characterizedusing Raman spectroscopy, which confirmed that the presence of the –PhCF3 group is important forthe recognition of synthetic stimulants. The determined values of the adsorption constants (Kads)showed the significance of charge–transfer and/or hydrogen bond interactions between—PhCF3groups in the polymeric film and the analyte of interest: buphedrone (9.79 × 105) &lt; naphyrone( 1.57 × 106) &lt; 2-AI (1.87 × 106). Compared to electrodes modified with nanomaterial, PThPhCF3/G-electrodes showed the highest sensitivity in concentration range of 1–11 μmol L−1 at neutral pHand a possibility of detection of 0.43–0.56 μg mL−1 (sr = 0.05–0.12). The analytical performance ofThPhCF3/G promises good perspectives for the detection of synthetic stimulants in forensic sampleswithout prior pretreatment.

Název v anglickém jazyce

Interaction of the Polymeric Layer Derived from 3-(4-Trifluoromethyl)-phenyl)-thiophene with Synthetic Stimulants on the Phase Boundary

Popis výsledku anglicky

Modification of an electrode surface with a selective layer leads to amplification of theelectrochemical signal. A film derived from electrochemically oxidized 3-(4-trifluoromethyl)-phenyl)-thiophene deposited on a graphite electrode (ThPhCF3/G) was used to estimate the affinity forsynthetic stimulants (2-aminoindane, buphedrone, naphyrone) using a combination of square wavevoltammetry and electrochemical impedance spectroscopy. The modified surface was characterizedusing Raman spectroscopy, which confirmed that the presence of the –PhCF3 group is important forthe recognition of synthetic stimulants. The determined values of the adsorption constants (Kads)showed the significance of charge–transfer and/or hydrogen bond interactions between—PhCF3groups in the polymeric film and the analyte of interest: buphedrone (9.79 × 105) &lt; naphyrone( 1.57 × 106) &lt; 2-AI (1.87 × 106). Compared to electrodes modified with nanomaterial, PThPhCF3/G-electrodes showed the highest sensitivity in concentration range of 1–11 μmol L−1 at neutral pHand a possibility of detection of 0.43–0.56 μg mL−1 (sr = 0.05–0.12). The analytical performance ofThPhCF3/G promises good perspectives for the detection of synthetic stimulants in forensic sampleswithout prior pretreatment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemosensors

ISSN

2227-9040

e-ISSN

2227-9040

Svazek periodika

12

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001254930900001

EID výsledku v databázi Scopus

2-s2.0-85197184437