{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T08:00:40Z","timestamp":1789027240216,"version":"build-2803163510"},"reference-count":37,"publisher":"Wiley","issue":"24","license":[{"start":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T00:00:00Z","timestamp":1777420800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T00:00:00Z","timestamp":1777420800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2026,6,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Hot exciton (HE) materials possessing a locally excited (LE)\n                    <jats:italic>\n                      S\n                      <jats:sub>1<\/jats:sub>\n                    <\/jats:italic>\n                    state are ideal for achieving narrow emission and high exciton utilization efficiency (EUE) in organic light\u2010emitting diodes (OLEDs). However, constrained by a single high\u2010lying reverse intersystem crossing (hRISC) channel, the currently established donor\u2013bridge\u2013acceptor (D\u2013B\u2013A) design suffers from low EUE\n                    <jats:sub>max<\/jats:sub>\n                    (\u2264 50%) and consequently low external quantum efficiency (EQE\n                    <jats:sub>max<\/jats:sub>\n                    : 2%). Herein, we introduce a \u201cmulti\u2010functional subunit\u201d triad strategy to circumvent this limitation by engineering the luminescent core to maintain the LE\u2013\n                    <jats:italic>S<\/jats:italic>\n                    <jats:sub>1<\/jats:sub>\n                    state while simultaneously participating in the formation of multiple near\u2010degenerate\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>n<\/jats:sub>\n                    states that exhibit substantial spin\u2013orbit coupling with the\n                    <jats:italic>S<\/jats:italic>\n                    <jats:sub>1<\/jats:sub>\n                    state, thus activating multiple efficient hRISC pathways. This concept is validated using a newly designed molecule,\u00a0P\u2010Cz\u2010SO, which exhibits a well\u2010defined LE\u2013\n                    <jats:italic>S<\/jats:italic>\n                    <jats:sub>1<\/jats:sub>\n                    state with narrow blue emission. Transient spectroscopy reveals two distinct delayed fluorescence (DF) components, providing the first direct experimental evidence for multi\u2010channel hRISC processes. The resulting OLED\u00a0demonstrates near\u2010unity EUE\n                    <jats:sub>max<\/jats:sub>\n                    and a record EQE\n                    <jats:sub>max<\/jats:sub>\n                    of 15.5% among deep\u2010blue HE\u2010OLEDs (CIEy \u2264 0.1). Comparative studies with a reference compound,\u00a0P\u2010Cz\u2010Ph, confirm the critical role of the multi\u2010channel hRISC design. This work provides a general paradigm for achieving highly efficient LE\u2013\n                    <jats:italic>S<\/jats:italic>\n                    <jats:sub>1<\/jats:sub>\n                    HE emitters.\n                  <\/jats:p>","DOI":"10.1002\/anie.9227277","type":"journal-article","created":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T06:47:27Z","timestamp":1777531647000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Boosting Triplet Exciton Harvesting via Multi\u2010Channel High\u2010Lying Reverse Intersystem Crossing in a Hot Exciton Material Featuring Locally Excited\u2010State Emission"],"prefix":"10.1002","volume":"65","author":[{"given":"Caixia","family":"Fu","sequence":"first","affiliation":[{"name":"Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry Sichuan University  Chengdu China"},{"name":"SINOPEC Maoming Petrochemical CO., Ltd  Maoming China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuchang","family":"Tan","sequence":"additional","affiliation":[{"name":"Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry Sichuan University  Chengdu China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuaibing","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Changchun China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang","family":"Zhou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences  Changchun China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuemei","family":"Pu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry Sichuan University  Chengdu China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6559-6234","authenticated-orcid":false,"given":"Yan","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry Sichuan University  Chengdu China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1733-4061","authenticated-orcid":false,"given":"Zhiyun","family":"Lu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry Sichuan University  Chengdu 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