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However, their development is hindered by weak spin\u2010orbit coupling and nonradiative decay. Here, we present a boron hybridization engineering strategy in which arylboronic esters are incorporated into poly(4\u2010vinylpyridine). By regulating the hybridization state of boron atoms from\n                    <jats:italic>sp<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    to\n                    <jats:italic>sp<\/jats:italic>\n                    <jats:sup>3<\/jats:sup>\n                    , the phosphorescence properties can be effectively tuned. Simultaneously, the formation of B\u2010N bonds suppresses nonradiative decay, leading to long\u2010lived RTP with lifetimes up to\u00a02.23\u00a0s. Both experimental evidence and theoretical calculations confirm the occurrence of boron hybridization switching and its decisive role in modulating phosphorescence. Moreover, the B\u2010N bonds exhibit acid\u2010base responsiveness, endowing the system with dynamic phosphorescence behavior. Beyond demonstrating triplet exciton control, this work establishes a molecular design principle that may guide the creation of multifunctional organic phosphorescent materials.\n                  <\/jats:p>","DOI":"10.1002\/anie.202523080","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T05:59:39Z","timestamp":1764914379000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Boron Hybridization Engineering for Regulating Room Temperature Phosphorescence"],"prefix":"10.1002","volume":"65","author":[{"given":"Senjie","family":"Hu","sequence":"first","affiliation":[{"name":"Institute of Flexible Electronics (IFE Future Technologies) Xiang'an Campus Xiamen University  Xiang'an South Road Xiamen 361102 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiwei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Health Medicine The Third 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