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- W4328142948 endingPage "108666" @default.
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- W4328142948 abstract "A reliable, selective, and sensitive ratiometric fluorescence sensor was fabricated for the detection of protamine (PROT) and heparin (HEPR). It is based on a rational combination of Acid Red 87 (AR 87) as an anionic dye and polyethyleneimine modified carbon quantum dots ([email protected]) as cationic fluorescent nanoparticles via electrostatic interaction. Addition of positively charged PROT quenched the negatively charged AR 87 via static quenching; while, the addition of HEPR restored the fluorescence of AR 87 via the formation of PROT-HEPR complex. Simultaneously, the fluorescence emission of [email protected] remained constant. Thus, a ratiometric response (FAR 87/F[email protected]) was linear with the concentration of PROT and HEPR in the range of 0.006–20 µg mL−1 and 0.018–22 µg mL−1 with detection limits (S/N) of 1.7 ng mL−1 and 6.0 ng mL−1, respectively. The analytical sensing platform offers several advantages including good selectivity, low LOD values, low-cost, and fast-response. Importantly, the sensing platform was used to detect PROT and HEPR in human serum and urine samples with satisfactorily recoveries % and RSDs %." @default.
- W4328142948 created "2023-03-22" @default.
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- W4328142948 date "2023-07-01" @default.
- W4328142948 modified "2023-10-10" @default.
- W4328142948 title "A reliable ratiometric fluorescence sensing of heparin and its antidote based on cationic carbon quantum dots and acid red 87" @default.
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- W4328142948 doi "https://doi.org/10.1016/j.microc.2023.108666" @default.
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