Ru(II) Complex Grafted Ti3C2Tx MXene Nano Sheet with Photothermal/Photodynamic Synergistic Antibacterial Activity
Xiaofang Liu1, Hongchi Xie1, Shi Zhuo1
1Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
Nanomaterials (Basel, Switzerland)
|March 29, 2023
Summary
A new nanocomposite material, Ru@MXene, offers potent light-assisted antimicrobial therapy, effectively combating drug-resistant bacteria through combined photothermal and photodynamic effects without inducing resistance.
Area of Science:
- Materials Science
- Biomedical Engineering
- Nanotechnology
Background:
- Antibiotic resistance is a growing global health threat, necessitating novel antimicrobial strategies.
- Light-assisted antimicrobial therapies offer a promising alternative due to high efficacy and low resistance development.
- Developing advanced materials for synergistic photothermal/photodynamic therapy is crucial.
Purpose of the Study:
- To synthesize and characterize a novel Ru@MXene nanocomposite for synergistic antimicrobial applications.
- To evaluate the enhanced antimicrobial efficacy of Ru@MXene compared to its individual components.
- To investigate the potential of Ru@MXene as a non-drug-based antimicrobial therapy.
Main Methods:
- Synthesis of Ru@MXene nanocomposite via ester bonding of Ru(bpy)(dcb)2+ to MXene nanosheets.
- Evaluation of antimicrobial activity against *Escherichia coli* and *Staphylococcus aureus* under light irradiation.
- Assessment of synergistic photothermal therapy (PTT) and photodynamic therapy (PDT) mechanisms.
Main Results:
- Ru@MXene demonstrated significantly enhanced antimicrobial capacity compared to Ru or MXene alone.
- Near 100% bacterial inactivation was achieved against *E. coli* and *S. aureus* using Ru@MXene under light.
- The synergistic effect is attributed to increased reactive oxygen species (ROS) generation and thermal effects.
Conclusions:
- Ru@MXene represents a novel and highly effective synergistic photothermal/photodynamic antimicrobial material.
- This material shows significant promise for non-drug antimicrobial therapies, circumventing antibiotic resistance.
- Further studies on the toxicological profile of Ru@MXene are required for clinical translation.
