Degradable Carbon Dots with Broad-Spectrum Antibacterial Activity

Area of Science:

• Nanoscience and Nanotechnology
• Biomedical Engineering
• Materials Science

Background:

• Bacterial and fungal infections pose significant global health challenges.
• Existing antimicrobial nanomedicines often exhibit toxicity, poor degradation, and pollution.
• Need for safer, biodegradable antimicrobial agents is critical.

Purpose of the Study:

• To fabricate low-toxic and degradable carbon dots (CDs) from vitamin C.
• To evaluate the broad-spectrum antibacterial and antifungal efficacy of these CDs.
• To investigate the degradation properties of the synthesized CDs.

Main Methods:

• One-step electrochemical synthesis of carbon dots from vitamin C.
• Characterization of synthesized carbon dots.
• Assessment of antibacterial and antifungal activity against various pathogens.
• Evaluation of degradation under visible light and mild temperature conditions.

Main Results:

• Successfully synthesized low-toxic and degradable carbon dots (CDs).
• Demonstrated potent broad-spectrum antibacterial and antifungal activity at low concentrations.
• Observed complete degradation of CDs into CO2, CO, and H2O under visible light/mild temperature.

Conclusions:

• Vitamin C-derived carbon dots present a promising solution for combating microbial infections.
• These CDs offer a safe and environmentally friendly alternative to conventional antimicrobial nanomaterials.
• The degradable nature and broad-spectrum activity highlight their potential in nanomedicine.