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Herein, we demonstrate that the strategic introduction of electron\u2010withdrawing imine and electron\u2010donating amine moieties into a versatile boron\u2010embedded 1,3\u2010bis(carbazol\u20109\u2010yl)benzene skeleton enables systematic hypsochromic and bathochromic shifts of narrowband emissions, respectively. By this method, effective electroluminescence color tuning was accomplished over a wide visible range from deep\u2010blue to yellow (461\u2013571\u2005nm), using the same MR molecular system, without compromising very narrow spectral features. Deep\u2010blue to yellow organic light\u2010emitting diodes with maximum external quantum efficiencies as high as 19.0\u201329.2\u2009% and superb color purity could be produced with this family of color\u2010tunable MR\u2010TADF emitters.<\/jats:p>","DOI":"10.1002\/anie.202109335","type":"journal-article","created":{"date-parts":[[2021,8,18]],"date-time":"2021-08-18T10:10:05Z","timestamp":1629281405000},"page":"23142-23147","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":290,"title":["Wide\u2010Range Color Tuning of Narrowband Emission in Multi\u2010resonance Organoboron Delayed Fluorescence Materials through Rational Imine\/Amine Functionalization"],"prefix":"10.1002","volume":"60","author":[{"given":"Minlang","family":"Yang","sequence":"first","affiliation":[{"name":"INAMORI Frontier Research Center (IFRC) Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"},{"name":"Department of Applied Chemistry Graduate School of Engineering Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"So","family":"Shikita","sequence":"additional","affiliation":[{"name":"INAMORI Frontier Research Center (IFRC) Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"},{"name":"Department of Applied Chemistry Graduate School of Engineering Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyukgi","family":"Min","sequence":"additional","affiliation":[{"name":"INAMORI Frontier Research Center (IFRC) Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"},{"name":"Department of Applied Chemistry Graduate School of Engineering Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"In Seob","family":"Park","sequence":"additional","affiliation":[{"name":"INAMORI Frontier Research Center (IFRC) Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiromoto","family":"Shibata","sequence":"additional","affiliation":[{"name":"Nippon Soda Co., Ltd.  2-2-1 Ohtemachi, Chiyoda-ku Tokyo 100-8165 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natsuki","family":"Amanokura","sequence":"additional","affiliation":[{"name":"Nippon Soda Co., Ltd.  2-2-1 Ohtemachi, Chiyoda-ku Tokyo 100-8165 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1586-4701","authenticated-orcid":false,"given":"Takuma","family":"Yasuda","sequence":"additional","affiliation":[{"name":"INAMORI Frontier Research Center (IFRC) Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"},{"name":"Department of Applied Chemistry Graduate School of Engineering Kyushu University  744 Motooka, Nishi-ku Fukuoka 819-0395 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9,16]]},"reference":[{"key":"e_1_2_2_1_1","unstructured":"For the earliest TADF-OLEDs see:"},{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.3558906"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.4749285"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature11687"},{"key":"e_1_2_2_5_1","unstructured":"For reviews on TADF see:"},{"key":"e_1_2_2_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201402532"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201605444"},{"key":"e_1_2_2_8_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemmater.6b05324"},{"key":"e_1_2_2_9_2","doi-asserted-by":"publisher","DOI":"10.1038\/natrevmats.2018.20"},{"key":"e_1_2_2_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.201802558"},{"key":"e_1_2_2_11_2","first-page":"56235642","volume":"25","author":"Liang X.","year":"2019","journal-title":"Chem. 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