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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

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

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Chemosensors

ISSN

2227-9040

e-ISSN

2227-9040

Volume of the periodical

12

Issue of the periodical within the volume

6

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

—

UT code for WoS article

001254930900001

EID of the result in the Scopus database

2-s2.0-85197184437