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Despite recent advancements, a thorough comprehension of the underlying mechanisms remains imperative for the practical application of such materials. In this work, we introduce a novel approach aimed at modulating the TADF process by manipulating dynamic processes in excited states through aggregation effect. Our findings reveal that aggregation not only enhances both prompt and delayed fluorescence simultaneously but also imposes constraints on molecular reorientation. This constraint reinforces spin\u2010orbit coupling and reduces the energy gap between singlets and triplets. These insights deepen our understanding of the fundamental mechanisms governing the aggregation effect on TADF materials and provide valuable guidance for the design of high\u2010efficiency photoluminescent materials.<\/jats:p>","DOI":"10.1002\/anie.202404978","type":"journal-article","created":{"date-parts":[[2024,5,3]],"date-time":"2024-05-03T02:26:04Z","timestamp":1714703164000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Aggregation Enhanced Thermally Activated Delayed Fluorescence through Spin\u2010Orbit Coupling Regulation"],"prefix":"10.1002","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4459-1602","authenticated-orcid":false,"given":"Wei","family":"Zhang","sequence":"first","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University  Beijing 100048 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujie","family":"Gong","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University  Beijing 100048 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiachen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujie","family":"Zhou","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7532-3950","authenticated-orcid":false,"given":"Jie","family":"Kong","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4528-189X","authenticated-orcid":false,"given":"Hongbing","family":"Fu","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University  Beijing 100048 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5187-9084","authenticated-orcid":false,"given":"Meng","family":"Zhou","sequence":"additional","affiliation":[{"name":"Hefei National Research Center for Physical Sciences at the Microscale Department of Chemical Physics University of Science and Technology of China  Hefei Anhui 230026 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,6,14]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.267.5202.1332"},{"key":"e_1_2_8_2_1","doi-asserted-by":"crossref","unstructured":"G. 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