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    The B,N dual-doped carbon dots (B,N-CDs) for ratiometric fluorescence detection the morin were prepared from sodium tetraborate and polyethyleneimine through the single-step hydrothermal method. The B,N-CDs exhibited the optimum excitation and emission wavelength at 340 nm and 467 nm, respectively. Interestingly, the intensities of emission peak at 467 nm of B,N-CDs reduced meanwhile a new peak emerged at 560 nm with the continuous addition of morin, which revealed the ratio fluorescence characteristic between F560nm/F467nm and morin concentration with the linearity range and detection limit of 14.5-32.5 μmol/L and 0.3 μmol/L (S/N = 3), respectively. The interference of common antibiotics and remedies could be ignored when the concentration of morin was detected by the B,N-CDs, which demonstrating the outstanding selectivity. Furthermore, the proposed fluorescence method is used to detect morin in urine with recoveries are 99.8-104.5%. The results of this research indicate the feasibility and practicality of B,N-CDs as an effective fluorescent probe for the determination of morin. Copyright © 2021 Elsevier B.V. All rights reserved.


    Yanan Yan, Lin Li, Huilin Zhang, Fangfang Du, Yating Meng, Shaomin Shuang, Ruibing Wang, Shengmei Song, Chuan Dong. Carbon dots for ratiometric fluorescence detection of morin. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 2021 Jul 15;256:119751

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    PMID: 33819765

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