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Herein, a cerium\u2010based MOF (CeTCPP) is decorated with Au nanoparticles. Under ultrasound irradiation, Au nanoparticles can precisely turn 1\/3 of the pristine Ce<jats:sup>3+<\/jats:sup> nodes into Ce<jats:sup>4+<\/jats:sup>. With the stable existence of Ce<jats:sup>4+<\/jats:sup>, the coordination of Ce nodes changed, causing the structural irregularity in CeTCPP\u2010Au, so that the electron\u2010hole recombination is obviously hindered, facilitating the generation of reactive oxygen species. Therefore, under 20\u00a0min of ultrasound irradiation, the CeTCPP\u2010Au showed superior antibacterial efficacy of over 99% against <jats:italic>Staphylococcus aureus<\/jats:italic> and <jats:italic>Escherichia coli<\/jats:italic> with good biocompatibility, which is further used for effective therapy of osteomyelitis. Overall, this work provides a dynamic defect formation strategy of MOF through the electron trapping of Au nanoparticles, which also sheds light on sonodynamic therapy in curing deep\u2010seated lesions.<\/jats:p>","DOI":"10.1002\/smll.202207687","type":"journal-article","created":{"date-parts":[[2023,3,13]],"date-time":"2023-03-13T05:37:52Z","timestamp":1678685872000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":47,"title":["Engineering Dynamic Defect of Ce<sup>III<\/sup>\/Ce<sup>IV<\/sup>\u2010Based Metal\u2010Organic Framework through Ultrasound\u2010Triggered Au Electron Trapper for Sonodynamic Therapy of Osteomyelitis"],"prefix":"10.1002","volume":"19","author":[{"given":"Qiyao","family":"Zheng","sequence":"first","affiliation":[{"name":"School of Materials Science &amp; Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin University  Yaguan Road 135# Tianjin 300072 China"},{"name":"School of Materials Science &amp; 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