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  • Title: Dual-emission carbon dots for ratiometric detection of Fe3+ ions and acid phosphatase.
    Author: Pang S, Liu S.
    Journal: Anal Chim Acta; 2020 Apr 08; 1105():155-161. PubMed ID: 32138914.
    Abstract:
    We have developed a simple and convenient route to prepare fluorescent carbon dots with dual emission peaks respectively at 470 and 570 nm. The prepared dual-emission carbon dots can be used for ratiometric detection of Fe3+ ions in the range from 0 to 50 μmol·L-1 with 0.8 μmol·L-1 detection limit based on the fluorescence quenching at 570 nm. The quenched fluorescence induced by Fe3+ ions could be recovered by pyrophosphate. We further used the carbon dots-Fe3+ ions-pyrophosphate mixed system for ratiometric detection of acid phosphatase in the range from 0.08 to 6.75 μg·mL-1 with 0.01 μg·mL-1 detection limit.
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