Burning windjammer: Multi-rotor engineered photothermal agent with 87% photothermal conversion for antimicrobial...

Area of Science:

• Biomedical Engineering
• Materials Science
• Infectious Diseases

Background:

• Antibiotic resistance is a growing global health threat, reducing the effectiveness of conventional treatments.
• Photothermal therapy offers a promising alternative for combating infectious diseases due to its high efficacy and controllability.

Purpose of the Study:

• To design and fabricate a high-performance photothermal agent for antibacterial applications.
• To investigate the mechanism of enhanced photothermal conversion and antibacterial activity.

Main Methods:

• Engineering molecular rotors to create the 4TPE-TBZ photothermal agent.
• Evaluating photothermal conversion efficiency and antibacterial efficacy against S. aureus and E. coli biofilms in vitro.
• Assessing in vivo therapeutic effects on bacterial infection and inflammation models.

Main Results:

• The 4TPE-TBZ agent achieved a photothermal conversion efficiency of up to 87%.
• 4TPE-TBZ nanoparticles effectively eradicated S. aureus and E. coli biofilms via photothermal effects.
• In vivo studies showed potent antibacterial activity and significant reduction in inflammatory responses.

Conclusions:

• The developed 4TPE-TBZ represents a high-performance photothermal agent with significant potential for antibacterial therapy.
• Strategic molecular design enhances photothermal conversion efficiency, offering a viable strategy against drug-resistant pathogens.