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Herein, a novel designing paradigm is proposed for achieving anti\u2010quenching narrowband emission in MR\u2010TADF molecules by embedding the indeno[2,1\u2010b]carbazole unit into the polycyclic aromatic hydrocarbon skeleton. The proof\u2010of\u2010concept emitter\n                    <jats:bold>DT\u2010BON1<\/jats:bold>\n                    reveals a favorable twist angle of 31.8\u00b0, manifesting formation of helical architecture within MR core. As a result, the emission peaks and full width at half maximum show virtually no variation with changing doping concentration from 1 wt% to 20 wt%. Moreover, the photoluminance quantum yields exceed 90% even at 20 wt% doping concentration endowed by the outstanding anti\u2010quenching characteristics. The\n                    <jats:bold>DT\u2010BON1<\/jats:bold>\n                    based OLEDs can achieve maximum external quantum efficiency (EQE\n                    <jats:sub>max<\/jats:sub>\n                    ) of exceeding 30%. Especially, the alleviated exciton quenching effects can be firmly demonstrated by marginally decreased EQE\n                    <jats:sub>max<\/jats:sub>\n                    values, attaining 29.2% in 10 wt%\u2010based OLEDs and 27.3% even in heavily doped devices (20 wt%), which is at a record high for MR\u2010TADF with blue emission at such high doping concentration.\n                  <\/jats:p>","DOI":"10.1002\/anie.9731976","type":"journal-article","created":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T03:39:46Z","timestamp":1792553986000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Helical Multi\u2010Resonance Thermally Activated Delayed Fluorescence Emitters for High\u2010Performance Anti\u2010Quenching Narrowband Blue OLEDs"],"prefix":"10.1002","author":[{"given":"Shuai","family":"Tang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology\/Key Laboratory of Rubber\u2010Plastics Ministry of Education\/Shandong Provincial Key Laboratory of Rubber\u2010Plastics School of Polymer Science and Engineering Qingdao University of Science &amp; Technology  Qingdao P.R. 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