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- W4282946849 abstract "Abstract BACKGROUND Ascorbic acid (AA) is an essential nutrient for humans, which must be obtained from vegetables, fruits, and other foods. The content of AA has become an important standard to evaluate the quality and nutritional value of food. The fluorescence sensing method based on nanomaterials is a good alternative for the rapid detection of AA. In this study, we developed an inner filter effect‐based fluorescent probe that hybridized nitrogen‐doped carbon dots (NCDs) with cobalt oxyhydroxide nanoflakes (CoOOH NFs). RESULTS An optimal NCDs was successfully selected because it has a strong fluorescence at 430 nm and the most significant quenching phenomenon with CoOOH NFs due to the inner filter effect. When adding AA into the NCDs–CoOOH NFs probe solution, a specific redox reaction will occur between the enediol group of AA and the CoOOH NFs to interfere with the quenching ability of CoOOH NFs and recover the fluorescence of NCDs. The recovered fluorescence intensities demonstrated a linear relationship with the concentrations of AA. The assay based on the NCDs–CoOOH NFs probe allows AA to be tested in a wide range of 5–200 μmol L −1 with a detection limit of 2.31 nmol L −1 . Furthermore, to evaluate its practical application, the NCDs–CoOOH NFs fluorescence probe was utilized to analyze AA in vegetable, fruit, and serum matrixes with satisfactory results. CONCLUSION An inner filter effect‐based fluorescence probe for the rapid detection of AA was developed, and it has a good potential to be applied in both food and clinical testing. © 2022 Society of Chemical Industry." @default.
- W4282946849 created "2022-06-16" @default.
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- W4282946849 date "2022-06-14" @default.
- W4282946849 modified "2023-10-18" @default.
- W4282946849 title "An inner filter effect‐based nitrogen‐doped carbon <scp>dots–CoOOH</scp> nanoflakes fluorescence probe for detection of ascorbic acid by chemical <scp>redox</scp> modulation" @default.
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- W4282946849 doi "https://doi.org/10.1002/jsfa.12033" @default.
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