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- W4311762471 abstract "Excessive usage and discharge of phthalic acid in the environment affect endocrine system of living beings via bioaccumulation in food chain. In this paper, boron and nitrogen co-doped yellow fluorescent carbon dots (B, N-C-dots) have been designed for the rapid recognition of plasticizer phthalic acid. These C-dots were prepared by carbonization of 4-bromo-1,2-diaminobenzene and boric acid mixture. The bright fluorescence (PLQY = 26.4 %) of C-dots showed a significant Stokes shift of 145 nm under 430 nm excitation wavelength. These B, N-C-dots selectively detect phthalic acid in aqueous solution instantaneously and experienced a maximum 95 % fluorescence quenching immediately upon the treatment with phthalic acid with a limit of detection of 91.12 nM. It has been proved that the combined effect of strong intermolecular hydrogen bonding, chemical conjugation, and non-fluorescent ground state complex formation between the probe and analyte led to fluorescence quenching of the C-dots. Static quenching has been confirmed from changes in B, N-C-dots UV–vis absorbance spectroscopy and non-changes in fluorescence lifetime after adding phthalic acid. Furthermore, these B, N-C-dots were successfully applied to recover the analyte in real water samples and showed an average recovery rate of 96.4–102 % with a good relative standard deviation from spiked samples. This study provides selective recognition ability in the field of environmental monitoring and remediation." @default.
- W4311762471 created "2022-12-28" @default.
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- W4311762471 date "2023-03-01" @default.
- W4311762471 modified "2023-09-30" @default.
- W4311762471 title "Boron and nitrogen co-doped bright yellow fluorescent carbon dots as real-time selective detection of phthalic acid plasticizer in aqueous medium" @default.
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- W4311762471 doi "https://doi.org/10.1016/j.jphotochem.2022.114489" @default.
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