Abstract
AbstractBacterial infection is one of the greatest threats to public health. In vivo real‐time monitoring and effective treatment of infected sites through non‐invasive techniques, remain a challenge. Herein, we designed a PtII metallacycle‐based supramolecular photosensitizer through the host‐guest interaction between a pillar[5]arene‐modified metallacycle and 1‐butyl‐4‐[4‐(diphenylamino)styryl]pyridinium. Leveraging the aggregation‐induced emission supramolecular photosensitizer, we improved fluorescence performance and antimicrobial photodynamic inactivation. In vivo studies revealed that it displayed precise fluorescence tracking of S. aureus‐infected sites, and in situ performed image‐guided efficient PDI of S. aureus without noticeable side effects. These results demonstrated that metallacycle combined with host‐guest chemistry could provide a paradigm for the development of powerful photosensitizers for biomedicine.
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