ArticleRoyal Society open science2019
Carbon dots functionalized papers for high-throughput sensing of 4-chloroethcathinone and its analogues in crime sites.
Article in Royal Society open science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Detection of drugs of abuse: evolving analytical strategies and emerging challenges.Frontiers in chemistry · 2026Review
- Carbon Dot Micelles Synthesized from Leek Seeds in Applications for Cobalt (II) Sensing, Metal Ion Removal, and Cancer Therapy.Journal of functional biomaterials · 2024Article
- Review
- Development of Fluorescent Co (II)-Integrated Carbon Dots and Their Application as a Off-On Mesotrione Detection Sensor.ACS omega · 2023Article
- Synthesis of fructose bound Fe(iii) integrated carbon dots as a robust turn-off detection sensor for chlortoluron.RSC advances · 2023Article
- Colorimetric and fluorescent detection of synthetic cathinones in oral fluid withRSC advances · 2022Article
- Photoluminescent carbon nanomaterials for sensing of illicit drugs: focus.Analytical sciences : the international journal of the Japan Society for Analytical Chemistry · 2022Review
- Carbon quantum dots for the detection of antibiotics and pesticides.Journal of food and drug analysis · 2020Review
- Nanomaterial-based adsorbents and optical sensors for illicit drug analysis.Journal of food and drug analysis · 2020Review
- The analytical and biomedical applications of carbon dots and their future theranostic potential: A review.Journal of food and drug analysis · 2020Review
- Carbon Dots for Forensic Applications: A Critical Review.Nanomaterials (Basel, Switzerland) · 2020Review
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Authors and funding
5 authors.
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Abstract
Sensitive and selective assays are demanded for quantitation of new psychoactive substances such as 4-chloroethcathinone that is a π-conjugated keto compound. Carbon dots (C-dots) prepared from L-arginine through a hydrothermal route have been used for quantitation of 4-chloroethcathinone in aqueous solution and on C-dot-functionalized papers (CDFPs). To prepare CDFPs, chromatography papers, each with a pattern of 8 × 12 circles (wells), are first fabricated through a solid-ink printing method and then the C-dots are coated into the wells. π-Conjugated keto or ester compounds induce photoluminescence quenching of C-dots through an electron transfer process. At pH 7.0, the CDFPs allow screening of abused drugs such as cocaine, heroin and cathinones. Because of poor solubility of heroin and cocaine at pH 11.0, the C-dot probe is selective for cathinones. The C-dots in aqueous solution and CDFPs at pH 11.0 allow quantitation of 4-chloroethcathinone down to 1.73 mM and 0.14 mM, respectively. Our sensing system consisting of a portable UV-lamp, a smartphone and a low-cost CDFP has been used to detect cathinones, cocaine and heroin at pH 7.0, showing its potential for screening of these drugs in crime sites.
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