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A label-free light-up fluorescent sensing strategy using hybridization chain reaction (HCR) amplification and DNA triplex assembly has been developed. Remarkably, the proposed fluorescence assay is successfully applied to the determination of avian influenza A (H7N9) virus DNA and thrombin. Herein, in the presence of targets, the target DNA/initiator triggers a cascade of hybridization events between...
In this paper, poly (diallyldimethylammonium chloride) functionalized graphene/palladium nanoparticles (PDDA-Gr/PdNPs) have been successfully synthesized through a simple one-pot method with the use of PDDA as stabilizing agents. The electrochemical response of triclosan on the PDDA-Gr/PdNPs modified glassy carbon electrode (GCE) is greatly enhanced comparing to the PDDA-Gr/GCE or the bare GCE. It...
In the present work, a simple, selective, and sensitive method has been proposed for the determination of four phenols (catechol, resorcinol, 2,6-dimethylphenol, and 2,4,6-trinitrophenol) in water samples. The method is based on poly-(methacrylic acid-co-ethylene glycol dimethacrylate) monolith microextraction (PMME) and capillary electrophoresis–ultraviolet (CE–UV) analysis. The operation parameters...
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