Biomass-Derived Carbon Dots as Fluorescent Probes for Label-Free Sensing of Hemin and as Radical Scavengers

Biosensors, Journal Year: 2025, Volume and Issue: 15(2), P. 105 - 105

Published: Feb. 12, 2025

Carbon dots (CDs) derived from biomass are promising fluorescent probes for specific analyte detection due to their specificity, biocompatibility, selectivity, and sensitivity. In this work, carbon were prepared hydrothermally natural material, Myrica esculenta fruits (hereafter referred as MPCDs), without adding any chemicals. The MPCDs characterized using optical, microscopic, spectroscopic methods that revealed the presence of numerous functional groups properties. exhibited exceptional characteristics such water solubility, photostability, excitation-dependent fluorescence emission, ionic stability. Transmission electron microscopy found average size was 8 nm. remarkable sensing ability hemin, with a good linearity (R2 = 0.999) lower limit 14.1 nM. demonstrated quenching-based primarily owing ground state complex formation inner filter effect. Furthermore, material excellent antioxidant potential against 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) 2,2-diphenyl-1-picrylhydrazyl radicals EC50 values 25.4 205.4 µg/mL, respectively. study suggests CDs could be used optical sensors hemin well scavenge selected radicals.

Language: Английский

The antioxidant properties of green carbon dots: a review

Environmental Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский