Single‐NIR Triggered Triple‐Modal Therapy: Synergistic PTT/PDT and Ultrafast Ag(II) Release via a Van Der Waals Silver Porphyrin/Graphene‐TiO 2 Heterojunction for MRSA‐Infected Wounds

ABSTRACT The escalating threat of multidrug‐resistant (MDR) bacteria, especially methicillin‐resistant Staphylococcus aureus (MRSA), urgently demands integrated multimodal therapies. However, it remains challenging to develop all‐in‐one platforms that synchronize photothermal therapy (PTT), photodynamic therapy (PDT), and ion release under a single near‐infrared (NIR) trigger. Herein, a van der Waals composite AgPor/Hj, assembled from Ag(II) porphyrin and graphene‐TiO 2 heterojunction, is reported. Synergistic hot hole injection from the heterojunction to the porphyrin macrocycle greatly enhances NIR absorption, achieving an ultrahigh photothermal conversion efficiency of 64.5% for porphyrin‐based systems. Crucially, under a single 808 nm NIR irradiation, the engineered interface synchronizes PTT, PDT, and ultrafast Ag(II) release. This single‐NIR‐triggered triple‐modal synergy enables outstanding biofilm eradication and potent MRSA inhibition both in vitro and in vivo. AgPor/Hj effectively eliminates bacteria in infected wounds and accelerates tissue repair, significantly outperforming vancomycin, the first‐line antibiotic for MRSA. Combined with excellent biocompatibility, low cost, and easy preparation, this synergistic platform provides a highly promising strategy for treating MDR bacterial wound infections.