A molecularly imprinted ratiometric fluorescence sensor based on blue/red carbon quantum dots for the visual determination of thiamethoxam

Dai, Yin; Xu, Wei; Hong, Junqiang; Zheng, Yani; Fan, Huizhu; Zhang, Jun; Fei, Jianwen; Zhu, Wanying; Hong, Junli

doi:10.1016/j.bios.2023.115559

Cited by 27 publications

(5 citation statements)

References 44 publications

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“…The ratiometric nanoprobe demonstrated fluorescence resonance energy transfer (FRET) between nanoclusters and CDs, resulting in the selective and ultrasensitive detection of paraquat and thiram at a low LOD of 3.03 and 7.49 nM, respectively. Dai et al (2023) prepared red-emission CDs (R-CDs) and blue-emission CDs F I G U R E 5 (a) Schematic for the synthesis of carbon dots (CDs) and their sensing performance in the detection of Hg 2+ (Wang, Jin et al, 2019). (b) Schematic for the synthesis of CDs@Ad-Eu-DPA as a ratiometric fluorescent sensor and sensing performance in the detection of Hg 2+ (Gan et al, 2021).…”

Section: Agrochemicals and Antibiotics Residuesmentioning

confidence: 99%

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Zou,

Shi,

Wang

et al. 2024

Comp Rev Food Sci Food Safe

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The importance of food quality and safety lies in ensuring the best product quality to meet consumer demands and public health. Advanced technologies play a crucial role in minimizing the risk of foodborne illnesses, contamination, drug residue, and other potential hazards in food. Significant materials and technological advancements have been made throughout the food supply chain. Among them, quantum dots (QDs), as a class of advanced nanomaterials with unique physicochemical properties, are progressively demonstrating their value in the field of food quality and safety. This review aims to explore cutting‐edge research on the different applications of QDs in food quality and safety, including encapsulation of bioactive compounds, detection of food analytes, food preservation and packaging, and intelligent food freshness indicators. Moreover, the modification strategies and potential toxicities of diverse QDs are outlined, which can affect performance and hinder applications in the food industry. The findings suggested that QDs are mainly used in analyte detection and active/intelligent food packaging. Various food analytes can be detected using QD‐based sensors, including heavy metal ions, pesticides, antibiotics, microorganisms, additives, and functional components. Moreover, QD incorporation aided in improving the antibacterial and antioxidant activities of film/coatings, resulting in extended shelf life for packaged food. Finally, the perspectives and critical challenges for the productivity, toxicity, and practical application of QDs are also summarized. By consolidating these essential aspects into this review, the way for developing high‐performance QD‐based nanomaterials is presented for researchers and food technologists to better capitalize upon this technology in food applications.

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Section: Agrochemicals and Antibiotics Residuesmentioning

confidence: 99%

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Zou,

Shi,

Wang

et al. 2024

Comp Rev Food Sci Food Safe

View full text Add to dashboard Cite

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“…Current techniques for the detection of neonicotinoids include both chemical and optical detection methods: high-performance liquid chromatography (HPLC), liquid chromatography-tandem mass spectrometry (LC–MS/MS), − surface enhanced Raman spectroscopy (SERS), , enzyme-linked immunosorbent assay (ELISA), , and electrochemical, − electrochemiluminescence (ECL), and fluorescence (FL) spectrophotometry. − Thereinto, FL sensors based on quantum dots (QDs) are extensively utilized due to their simplicity, high sensitivity, high selectivity, stability, and applicability. QDs are semiconductor nanocrystals with size-tunable optical and electronic properties and have found applications in light-emitting diodes, biotechnology, catalysis, sensors, and solar cells .…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Quenching Detection of Clothianidin in Fruit and Vegetable Samples Using MAPbBr₃ Perovskite Quantum Dots

Liu,

Peng,

et al. 2024

ACS Appl. Nano Mater.

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Highly stable and photoluminescent methylammonium lead halide perovskite quantum dots (MAPbBr3 PQDs) have been synthesized and applied for the fluorescence quenching detection of clothianidin in fruit and vegetable samples. Characterizations using different techniques, including photoluminescence (PL), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and time-resolved PL (TRPL), show that static quenching is the dominant fluorescence quenching mechanism of MAPbBr3 PQDs with clothianidin. Hydrogen bonds or van der Waals forces play major roles in the MAPbBr3 PQDs–clothianidin interaction. Under optimized conditions, the relative PL intensity of MAPbBr3 PQDs is linear to the concentration of clothianidin in the 0.0 and 20.0 mg/L range with a detection limit of 0.17 μg/kg. Excellent recoveries of 79.5–115.4% were acquired for radish and banana samples with a relative standard deviation below 9.4%. These results indicate that PQDs can be used for qualitative and quantitative identification of clothianidin, providing an effective detection method for risk prevention and control of neonicotinoid pesticide residues in agricultural products.

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“…The molecular imprinting technique (MIT) is an effective method to efficiently recognize imprinted molecules by constructing biomimetic synthetic receptors. The fluorescent imprinting sensors can be employed to provide visual detection without the usage of any instruments by introducing molecular imprinting polymers (MIPs) with specific recognition capabilities [20,21]. Traditional fluorescent imprinting sensors typically require dispersion in aqueous or organic solutions to complete the detection process [22].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Hu,

Zhao,

Chen

et al. 2024

Molecules

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Paper-based test strips with on-site visual detection have become a hot spot in the field of target detection. Yet, low specific surface area and uneven deposition limit the further application of test strips. Herein, a novel “turn-on” ratio of molecularly imprinted membranes (Eu@CDs-MIMs) was successfully prepared based on a Eu complex-doped polyvinylidene fluoride membrane for the selective, rapid and on-site visual detection of norfloxacin (NOR). The formation of surface-imprinted polymer-containing carbon dots (CDs) improves the roughness and hydrophilicity of Eu@CDs-MIMs. Fluorescence lifetimes and UV absorption spectra verified that the fluorescence enhancement of CDs is based on the synergistic effect of charge transfer and hydrogen bonding between CDs and NOR. The fluorescent test strip showed a linear fluorescent response within the concentration range of 5–50 nM with a limit of detection of 1.35 nM and a short response time of 1 min. In comparison with filter paper-based test strips, Eu@CDs-MIMs exhibit a brighter and more uniform fluorescent color change from red to blue that is visible to the naked eye. Additionally, the applied ratio fluorescent test strip was combined with a smartphone to translate RGB values into concentrations for the visual and quantitative detection of NOR and verified the detection results using high-performance liquid chromatography. The portable fluorescent test strip provides a reliable approach for the rapid, visual, and on-site detection of NOR and quinolones.

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A molecularly imprinted ratiometric fluorescence sensor based on blue/red carbon quantum dots for the visual determination of thiamethoxam

Cited by 27 publications

References 44 publications

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Fluorescence Quenching Detection of Clothianidin in Fruit and Vegetable Samples Using MAPbBr₃ Perovskite Quantum Dots

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

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A molecularly imprinted ratiometric fluorescence sensor based on blue/red carbon quantum dots for the visual determination of thiamethoxam

Cited by 27 publications

References 44 publications

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Fluorescence Quenching Detection of Clothianidin in Fruit and Vegetable Samples Using MAPbBr3 Perovskite Quantum Dots

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Contact Info

Product

Resources

About

Fluorescence Quenching Detection of Clothianidin in Fruit and Vegetable Samples Using MAPbBr₃ Perovskite Quantum Dots