Visual Multifunctional Aggregation‐Induced Emission‐Based Bacterial Cellulose for Killing of Multidrug‐Resistant Bacteria

Multidrug‐resistant (MDR) bacteria‐related wound infections are a thorny issue. It is urgent to develop new antibacterial wound dressings that can not only prevent wounds from MDR bacteria infection but also promote wound healing. Herein, an aggregation‐induced emission (AIE) molecule BITT‐composited bacterial cellulose (BC) is presented as wound dressings. BC‐BITT composites have good transparency, making it easy to monitor the wound healing process through the composite membrane. The BC‐BITT composites retain the advantages of biocompatible BC, and display photodynamic and photothermal synergistic antibacterial effects under irradiation of a 660 nm laser. Furthermore, the BC‐BITT composites show excellent wound healing performance in a mouse full‐thickness skin wound model infected by MDR bacteria, simultaneously with negligible toxicity. This work paves a way for treating clinically troublesome wound infections. A wound dressing with photodynamic and photothermal synergistic antibacterial effects shows excellent wound healing performance in a mouse full‐thickness skin wound model infected by multidrug resistant bacteria with negligible toxicity.