Acetylcholinesterase modified inkjet-printed graphene/gold nanoparticle/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) hybrid electrode for ultrasensitive chlorpyrifos detection

Theansun, Watcharinthon; Sriprachuabwong, Chakrit; Chuenchom, Laemthong; Prajongtat, Pongthep; Techasakul, Supanna; Tuantranont, Adisorn; Dechtrirat, Decha

doi:10.1016/j.bioelechem.2022.108305

Cited by 10 publications

(1 citation statement)

References 58 publications

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“…Currently, the detection tools for chlorpyrifos residues mainly involve the bulk instruments‐based methods and rapid detection methods (Theansun et al., 2023). Bulk instruments, such as gas chromatography, liquid chromatography, and gas or liquid chromatography‐mass spectrometry, have the advantages of high precision, accuracy, and stability.…”

Section: Introductionmentioning

confidence: 99%

Enhanced magnetic relaxation switching immunoassay for chlorpyrifos based on tyramine signal amplification

Zhan,

Wu,

Dong

2023

Food Safety and Health

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Chlorpyrifos, an organophosphorus pesticide, is widely used in agriculture to protect crops from insects. However, the presence of its residues in food has caused widespread concern due to the serious risks to human health. Traditional detection methods suffer from limitations, such as low sensitivity, long detection time, and complicated operations. Herein, based on the tyramine signal amplification (TSA) strategy, we developed a sensitive and rapid magnetic relaxation switching (MRS) immunosensor for the detection of chlorpyrifos. Wherein, magnetic Fe3O4 nanoparticles modified with tyramine (MNP150‐tyramine) acted as magnetic probes for magnetic relaxation signal output. In the presence of hydrogen peroxide (H2O2) and horseradish peroxidase (HRP), tyramine can be converted to the highly reactive intermediate that covalently binds with the nearby proteins, such as HRP and antibody, thus assembling MNPs to magnetic clusters and showing changes in transverse relaxation time (T2) signals. Based on the “antibody–antigen” immunoreaction, chlorpyrifos could make a connection of HRP/antibody‐modified MNPs and MNP150‐tyramine with a result of MNPs aggregation and strong T2 signals. In this study, the TSA‐MRS method showed sensitive detection of chlorpyrifos with a limit of detection of 0.54 ng/mL, a 4.5‐fold enhancement in the sensitivity compared with the ELISA method, providing an alternative method for the detection of harmful substances in food samples.

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Section: Introductionmentioning

confidence: 99%

Enhanced magnetic relaxation switching immunoassay for chlorpyrifos based on tyramine signal amplification

Zhan,

Wu,

Dong

2023

Food Safety and Health

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Mechanisms and Strategies to Achieve Stability in Inkjet Printed 2D Materials Electronics

Tian,

Liu,

Chen

et al. 2024

Adv Elect Materials

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Printed electronics are electronic devices fabricated on flexible substrates using a wide range of printing techniques, which have the characteristics of lightness, thinness, softness, bendability, and transparency. Inkjet printing is a suitable printing technique for the fabrication of high‐precision and low‐cost flexible electronic devices because they are customizable, integrable, and reconfigurable. However, maintaining the stability during the ink preparation, printing, and evaporation process to ensure the high accuracy and quality of the fabricated devices has posed tremendous challenges until today. In this paper, the principles and methods of maintaining stability from three aspects: ink preparation, ink printing, and ink evaporation are reviewed. First, the comprehensive colloidal dispersion mechanisms involved in the ink dispersion process are summarized and reviewed the recent advancements made in the preparation of 2D material inks. Second, the fluid dynamics principles involved in inkjet printing for achieving stable straight lines are analyzed, and originally proposed the “phase diagram” for predicting the morphology of printed lines, the first to theoretically predict the necessary conditions for obtaining straight yet stable printed lines. Finally, methods are supposed to suppress/eliminate/utilize the “coffee ring effect”, especially several self‐assembly methods.

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Enzyme Immobilized Nanomaterials: An Electrochemical Bio-Sensing and Biocatalytic Degradation Properties Toward Organic Pollutants

et al. 2022

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Acetylcholinesterase modified inkjet-printed graphene/gold nanoparticle/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) hybrid electrode for ultrasensitive chlorpyrifos detection

Cited by 10 publications

References 58 publications

Enhanced magnetic relaxation switching immunoassay for chlorpyrifos based on tyramine signal amplification

Enhanced magnetic relaxation switching immunoassay for chlorpyrifos based on tyramine signal amplification

Mechanisms and Strategies to Achieve Stability in Inkjet Printed 2D Materials Electronics

Enzyme Immobilized Nanomaterials: An Electrochemical Bio-Sensing and Biocatalytic Degradation Properties Toward Organic Pollutants

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