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- W4387209610 abstract "In this work, a novel ultrasensitive aptasensor for deoxynivalenol (DON) detection based on the polyethyleneimine-functionalised porous reduced graphene oxide loaded gold nanowires (PEI-PrGO/AuNWs) and methylene blue (MB)-labelled imidazole molecular sieve backbone (ZIF-8) signal amplification strategy was proposed. PEI-PrGO/AuNWs with large surface area and excellent conductivity were used as modification materials on bare gold electrodes, which could increase the combining of complementary strand (cDNA) on the electrode substrate and accelerate the electron transfer efficiency. Furthermore, a novel electrochemical signal probe was synthesized using streptavidin-modified imidazole molecular sieve backbone (ZIF-8/SA) as a carrier loaded with MB and reverse complementary chain (sDNA). In the presence of DON, the signal probe was introduced to the electrode surface by Watson-Crick base pairing after specific binding of DON to the aptamer (Apt). As expected, under the optimal conditions, the DON concentration was linearly related to the peak current generated by the prepared aptasensor, and the measured data were combined with theoretical calculations to obtain a detection limit of 2.23 × 10−9 mg/mL." @default.
- W4387209610 created "2023-10-01" @default.
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- W4387209610 date "2024-01-01" @default.
- W4387209610 modified "2023-10-09" @default.
- W4387209610 title "ZIF-8 labelled a new electrochemical aptasensor based on PEI-PrGO/AuNWs for DON detection" @default.
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- W4387209610 doi "https://doi.org/10.1016/j.talanta.2023.125257" @default.
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