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However, improving RTP in pure organic materials by controlling triplet excitons is challenging due to their complex relaxation processes. Therefore, exploring effective strategies to modulate triplet excitons is crucial. Herein, we propose a N\u2500B\u2500N isomerization strategy to enhance RTP performance. Two isomers containing HN\u2500B\u2500NH units (B\n                    <jats:sub>2<\/jats:sub>\n                    {1,2\u2010(NH)\n                    <jats:sub>2<\/jats:sub>\n                    C\n                    <jats:sub>6<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    }\n                    <jats:sub>2<\/jats:sub>\n                    ), namely 1,1\u2010DB and 1,2\u2010DB, were synthesized to explore their RTP properties. Intriguingly, 1,1\u2010DB exhibited excellent RTP, whereas 1,2\u2010DB displayed negligible phosphorescence. The N\u2500B\u2500N unit in 1,1\u2010DB optimizes molecular configuration and interactions, enhancing electron delocalization and stabilizing triplet excitons, which improves intersystem crossing (ISC) and spin\u2010orbit coupling (SOC) while reducing nonradiative decay, thus enabling RTP. Additionally, based on phosphorescence resonance energy transfer, multicolor afterglows were achieved by doping fluorescein into 1,1\u2010DB. This work not only provides a new class of RTP materials but also offers valuable insights for the discovery and optimization of rational designs in RTP materials, potentially triggering the exploration of new functions and properties within boron\u2010nitrogen molecular systems.\n                  <\/jats:p>","DOI":"10.1002\/anie.202509104","type":"journal-article","created":{"date-parts":[[2025,6,20]],"date-time":"2025-06-20T05:44:40Z","timestamp":1750398280000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["N\u2500B\u2500N Isomer Induced Room Temperature Phosphorescence: Expression, Mechanistic Insights, and Multi\u2010Level Anti\u2010Counterfeiting Applications"],"prefix":"10.1002","volume":"64","author":[{"given":"Jianhua","family":"Liu","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junxiong","family":"Yao","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"},{"name":"College of Chemistry and Chemical Engineering, Inner Mongolia Key Laboratory of Fine Organic Synthesis Inner Mongolia University  Hohhot 010021 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruping","family":"Mu","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyi","family":"Mao","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haihua","family":"Li","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianqi","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  Jiujiang 332005 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jifeng","family":"Huang","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering; Jiangxi Province Engineering Research Center of Ecological Chemical Industry Jiujiang University  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