{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T18:28:32Z","timestamp":1787596112059,"version":"build-2736575974"},"reference-count":36,"publisher":"Wiley","issue":"35","license":[{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"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","award":["22273057"],"award-info":[{"award-number":["22273057"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003453","name":"Natural Science Foundation of Guangdong Province","doi-asserted-by":"publisher","award":["2022A1515011661"],"award-info":[{"award-number":["2022A1515011661"]}],"id":[{"id":"10.13039\/501100003453","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003453","name":"Natural Science Foundation of Guangdong Province","doi-asserted-by":"publisher","award":["2023A1515012631"],"award-info":[{"award-number":["2023A1515012631"]}],"id":[{"id":"10.13039\/501100003453","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":[[2026,8,24]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Room temperature phosphorescence (RTP) materials with long luminescence lifetimes and tunable properties are highly desirable for applications in optoelectronics, information encryption, and bioimaging. Although host\u2013guest doping is an effective strategy to achieve high\u2010performance RTP in most systems, the RTP originates from the guest through host confinement and charge\/energy transfer. Activating RTP from the host remains a significant challenge due to inefficient triplet exciton manipulation. Here, we successfully achieved ultralong host RTP (224\u00a0ms) in the host\u2013guest doped systems with a controlled triplet state energy gap (\u0394\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>T<\/jats:sub>\n                    ) of 0.36\u20130.44\u00a0eV, which facilitates an endothermic reverse triplet\u2013triplet energy transfer (rTTET) process from the guest to the host, and thereby promotes the repopulation of host triplet excitons. This process establishes a dynamic thermal equilibrium between forward triplet\u2013triplet energy transfer (TTET) and rTTET, leading to thermally activated delayed phosphorescence from the host. As a result, the lifetime of the host's RTP is extended by 1120\u2010fold (from 0.2 to 224\u00a0ms). More importantly, the photoluminescence properties of the host's RTP can be systematically and predictably tuned by varying the \u0394\n                    <jats:italic>E<\/jats:italic>\n                    <jats:sub>T<\/jats:sub>\n                    , temperature, and doping ratio. This work provides a mechanistic insight and paradigm into the design of RTP materials through intermolecular exciton dynamics.\n                  <\/jats:p>","DOI":"10.1002\/anie.9564218","type":"journal-article","created":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T11:56:08Z","timestamp":1782474968000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Ultralong Room Temperature Phosphorescence of the Host in Host\u2013Guest Doped Systems"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-1190-2813","authenticated-orcid":false,"given":"Jiayu","family":"Li","sequence":"first","affiliation":[{"name":"Cancer Hospital of Shantou University Medical College Shantou Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanjun","family":"Ye","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering Shantou University  Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruicheng","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xitong","family":"He","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyan","family":"Shi","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering Shantou University  Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingjun","family":"Qiu","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering Shantou University  Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenbin","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Physics and Optoelectronic Engineering &amp; Guangdong Provincial Key Laboratory of Sensing Physics and System Integration Applications Guangdong University of Technology Guangzhou Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3304-2114","authenticated-orcid":false,"given":"Shaomin","family":"Ji","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2666-7607","authenticated-orcid":false,"given":"Li","family":"Dang","sequence":"additional","affiliation":[{"name":"School of Physics and Optoelectronic Engineering &amp; Guangdong Provincial Key Laboratory of Sensing Physics and System Integration Applications Guangdong University of Technology Guangzhou Guangdong China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7568-8300","authenticated-orcid":false,"given":"Ming\u2010De","family":"Li","sequence":"additional","affiliation":[{"name":"School of Physics and Optoelectronic Engineering &amp; 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