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- W4220792587 abstract "Semiconductor quantum dots (QDs) and tungsten disulfide nanosheets (WS2 NTs) have been widely studied in photocatalysis and photoelectrochemistry as representative electron donor-acceptor pairs but rarely in fluorescence sensing. In this study, we investigated the effect of WS2 NTs on the fluorescence signal of cadmium telluride (CdTe) QDs by grafting an aptamer as a bridge between them. The corresponding quenching mechanism was systematically explored, and results described the photoinduced electron transfer (PET) from excited CdTe QDs to WS2 NTs. Based on these results, a novel ratiometric fluorescence aptasensor was developed for zearalenone (ZEN) determination by innovatively introducing exonuclease I to digest the aptamer of ZEN and control the PET between CdTe QDs and WS2 NTs. The designed aptasensor exhibited an acceptable linear range and detection limit (0.1 pg mL-1), and superior accuracy and selectivity. This ratiometric fluorescence aptasensor was also used to monitor ZEN in rice and corn flour." @default.
- W4220792587 created "2022-04-03" @default.
- W4220792587 creator A5002551693 @default.
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- W4220792587 date "2022-08-01" @default.
- W4220792587 modified "2023-10-18" @default.
- W4220792587 title "A ratiometric fluorescence aptasensor based on photoinduced electron transfer from CdTe QDs to WS2 NTs for the sensitive detection of zearalenone in cereal crops" @default.
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- W4220792587 doi "https://doi.org/10.1016/j.foodchem.2022.132657" @default.
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