Nitrogen and Sulfur-Doped Carbon Quantum Dots Used as Fluorescent Probes

Li H. Zhang Y. Pang X. Niu X. Zhang D. Feng H. Fan H. Wang K.
September 2022 Springer

Journal of Applied Spectroscopy
2022 #89 Issue 4 761 - 767 pp.

Using hydrolyzed olive leaves as a carbon source and thiourea as a dopant, nitrogen-sulfur co-doped carbon quantum dots (NS-CQDs) were synthesized in the present work. The as-prepared NS-CQDs exhibited quasispherical morphology with an average particle size of 2–5 nm. Functional groups such as carboxyl and hydroxyl groups distributed on the surface of NS-CQDs were suggested to contribute to the good water solubility, biocompatibility, and strong fluorescence. Amphotericin B (AMB) was found to enhance the fluorescence intensity of NS-CQDs, whereas Fe(III) quenched the fluorescence of NS-CQDs. Taking advantage of such fluorescent characteristics, we established herein a quantitative method of measuring the content of AMB and Fe³⁺ in water, with detection limits of 10.0 and 7.4 μM, respectively.

amphotericin B , carbon quantum dots , detection , fluorescence , nitrogen and sulfur doping

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College of Petrochemical Technology at Lanzhou University of Technology, Lanzhou, China
Nazarbayev University, Nur-Sultan, Kazakhstan

College of Petrochemical Technology at Lanzhou University of Technology
Nazarbayev University

10 лет помогаем публиковать статьи Международный издатель

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