Layer Growth Inhibiting Strategy for Superior-Loading Atomic Metal Sites on Ultrathin Layered Double Hydroxides as the Efficient Chemiluminescence Probes

Xian, Jiaxin; Huang, Junyi; Bai, Ruining; Xue, Jinxia; Fu, Zhifeng; Ouyang, Hui

doi:10.1021/acs.analchem.3c04054

Anal. Chem.

2023

DOI: 10.1021/acs.analchem.3c04054

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Layer Growth Inhibiting Strategy for Superior-Loading Atomic Metal Sites on Ultrathin Layered Double Hydroxides as the Efficient Chemiluminescence Probes

Jiaxin Xian,

Junyi Huang,

Ruining Bai

et al.

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2024

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Cited by 2 publications

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Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Zhang,

Yang,

Zhang

et al. 2024

Anal. Chem.

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A multiplex assay of mycotoxins in food and medicine is urgently needed and challenging due to synergistic hazards of trace mycotoxins and a lack of sensitive and user-friendly detection approaches. Herein, a cobalt DNA−inorganic hybrid superstructure (Co@DS) was developed through isothermal rolling circle amplification (RCA) for an ultrasensitive chemiluminescence (CL) imaging assay of multiple mycotoxins. Cobalt ions were enriched in the RCA product, endowing the Co@DS with a high CL catalytic property. Experimental studies elucidated the formation and CL catalytic mechanism of Co@DS. Co@DS was facilely integrated with biotinylated DNA to function as a universal platform and combined with a disposable immunosensor array chip. After a competitive immunoassay and biotin−avidin recognition, the CL signals of luminol and hydrogen peroxide, catalyzed by Co@DS captured on each testing zone of the array chip, were imaged simultaneously. Target mycotoxins can be quantitated by CL intensities. To validate the concept, the CL imaging approach was employed for joint determination of aflatoxin B 1 , ochratoxins A, and zearalenone. Under optimal conditions, it showed advantages including simple sample pretreatment, acceptable throughput, high accuracy, minimal sample consumption, broad linear ranges, and detection limits as low as 0.75, 0.62, and 0.61 pg mL −1 , respectively. Furthermore, the approach was applied in analyzing real coix seed samples, showcasing excellent performance in effectively distinguishing qualified and contaminated medicine, revealing the great potential in managing the complex issue of mycotoxins cocontamination in food and medicine.

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Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Zhang,

Yang,

Zhang

et al. 2024

Anal. Chem.

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Multivalent Pt/Ti₃C₂Tx Nanocomposite-Based Immunochromatographic Sensor for Colorimetric/Temperature/Pressure Trimodal Detection

Xue,

Li,

et al. 2024

Anal. Chem.

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Layer Growth Inhibiting Strategy for Superior-Loading Atomic Metal Sites on Ultrathin Layered Double Hydroxides as the Efficient Chemiluminescence Probes

Cited by 2 publications

References 46 publications

Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Multivalent Pt/Ti₃C₂Tx Nanocomposite-Based Immunochromatographic Sensor for Colorimetric/Temperature/Pressure Trimodal Detection

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Layer Growth Inhibiting Strategy for Superior-Loading Atomic Metal Sites on Ultrathin Layered Double Hydroxides as the Efficient Chemiluminescence Probes

Cited by 2 publications

References 46 publications

Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Ultrasensitive Imaging Assay of Multiple Mycotoxins Using Cobalt DNA–Inorganic Hybrid Superstructure with High Chemiluminescence Catalytic Property

Multivalent Pt/Ti3C2Tx Nanocomposite-Based Immunochromatographic Sensor for Colorimetric/Temperature/Pressure Trimodal Detection

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Product

Resources

About

Multivalent Pt/Ti₃C₂Tx Nanocomposite-Based Immunochromatographic Sensor for Colorimetric/Temperature/Pressure Trimodal Detection