ArticleJournal of fluorescence2025
High-quantum Yield Carbon Dots as Selective Fluorescence Turn-off Probe for Bromate Detection in Food Samples Via Catalytic Oxidation Mechanism.
Article in Journal of fluorescence, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In this study, nitrogen-doped carbon dots (N-CDs) were successfully synthesized through a facile one-step hydrothermal approach using honeysuckle and ethylenediamine (EDA) as carbon and nitrogen sources, respectively. The obtained N-CDs displayed intense blue fluorescence emission at 420 nm upon excitation at 350 nm, along with an exceptional fluorescence quantum yield of 60.53%. Systematic characterization experiments employing transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS) revealed the morphological features, surface functional groups, and elemental composition of the N-CDs. Remarkably, in HCl medium, chloride ion-catalyzed bromate oxidation led to pronounced fluorescence quenching of the N-CDs. A highly linear correlation (R² = 0.9965) was found between bromate concentration (64-1024 ng·mL
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