Fe(II), Ni(II), Cu(II), and Co(II) salen Schiff base complexes: Proposal for a voltammetric sensor to analyze cocaine hydrochloride and its interferents

Castro, Alex Soares; Rodrigues, Caio Henrique Pinke; Menezes, Matheus Manoel Teles de; Silva, Ana Beatriz Defendi da; Bruni, Aline Thais; Oliveira, Marcelo Firmino de

doi:10.1016/j.forc.2021.100347

Cited by 6 publications

(2 citation statements)

References 49 publications

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“…Several electrochemical strategies have been reported in the literature for the modification of the electrode surfaces for the detection of cocaine, which is one of the most widely used drugs worldwide. The potential use of Schiff base complexes that form stable films on the electrode surface in voltammetric analysis of cocaine was evident from the investigations cited in references [21][22][23]. M.F.M.…”

Section: Introductionmentioning

confidence: 99%

Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes

Shishkanova,

Štěpánková,

Broncová

et al. 2024

Preprint

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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.

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Section: Introductionmentioning

confidence: 99%

Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes

Shishkanova,

Štěpánková,

Broncová

et al. 2024

Preprint

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show abstract

“…Unfortunately, many people suffer unpleasant consequences as a result of their cocaine use. Risks and side effects of cocaine use may include: overdose, stroke, cardiovascular disease, shrinking brain size, HIV infection, hepatitis B infection, hepatitis C infection, memory loss, mood disorders, gastrointestinal disease, respiratory illness, high blood pressure, seizures, weight loss and nosebleeds [4].…”

Section: Introductionmentioning

confidence: 99%

An electrochemical sensor based on octahedral composite modified glassy carbon electrode for voltammetric detection of cocaine

et al. 2023

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The current work aimed to fabricate a new cocaine sensor of octahedral palladium-doped cobaltite composite (Oh-Pd 2 + : Co 3 O 4 -C) using a simple hydrothermal protocol. As-fabricated cocaine sensing approach was validated by various methods. Energy dispersive X-ray analysis, X-ray diffraction and scanning electron microscopy were recruited to characterize our charged modified composite. The electrode could sensitively detect cocaine, with a lengthy linear range (0.01 μM-900.0 μM) and a limit of detection (1.3 nM). The quantitative cocaine determination was achieved in the biological specimens using our modified electrode, the results of which displayed admirable outcomes.

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Cocaine electrooxidation behavior, mechanism, and kinetics on a carbon paste electrode chemically modified with a cobalt or copper Schiff base complex

et al. 2021

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Fe(II), Ni(II), Cu(II), and Co(II) salen Schiff base complexes: Proposal for a voltammetric sensor to analyze cocaine hydrochloride and its interferents

Cited by 6 publications

References 49 publications

Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes

Selective Recognition of Synthetic Stimulants via a Thio-phene-Derived Polymeric Layer on Graphite Electrodes

An electrochemical sensor based on octahedral composite modified glassy carbon electrode for voltammetric detection of cocaine

Cocaine electrooxidation behavior, mechanism, and kinetics on a carbon paste electrode chemically modified with a cobalt or copper Schiff base complex

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