ArticleNanomaterials (Basel, Switzerland)2021
A Molecularly Imprinted Sol-Gel Electrochemical Sensor for Naloxone Determination.
Article in Nanomaterials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 20 citations in OpenAlex.
- Hazardous Materials from Threats to Safety: Molecularly Imprinted Polymers as Versatile Safeguarding Platforms.Polymers · 2024Review
- Molecularly imprinted polymer composite membranes: From synthesis to diverse applications.Heliyon · 2024Review
- Sensing with Molecularly Imprinted Membranes on Two-Dimensional Solid-Supported Substrates.Sensors (Basel, Switzerland) · 2024Review
- Interpol Review of Drug Analysis 2019-2022.Forensic science international. Synergy · 2023Review
- Recent Advances of Nanomaterials-Based Molecularly Imprinted Electrochemical Sensors.Nanomaterials (Basel, Switzerland) · 2022Review
- Electroanalysis of Fentanyl and Its New Analogs: A Review.Biosensors · 2022Review
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A molecularly imprinted sol-gel is reported for selective and sensitive electrochemical determination of the drug naloxone (NLX). The sensor was developed by combining molecular imprinting and sol-gel techniques and electrochemically grafting the sol solution onto a functionalized multiwall carbon nanotube modified indium-tin oxide (ITO) electrode. The sol-gel layer was obtained from acid catalyzed hydrolysis and condensation of a solution composed of triethoxyphenylsilane (TEPS) and tetraethoxysilane (TES). The fabrication, structure and properties of the sensing material were characterized via scanning electron microscopy, spectroscopy and electrochemical techniques. Parameters affecting the sensor's performance were evaluated and optimized. A sensor fabricated under the optimized conditions responded linearly between 0.0 µM and 12 µM NLX, with a detection limit of 0.02 µM. The sensor also showed good run-to-run repeatability and batch-to-batch performance reproducibility with relative standard deviations (RSD) of 2.5-7.8% (n = 3) and 9.2% (n = 4), respectively. The developed sensor displayed excellent selectivity towards NLX compared to structurally similar compounds (codeine, fentanyl, naltrexone and noroxymorphone), and was successfully used to measure NLX in synthetic urine samples yielding recoveries greater than 88%.
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