Blueprints for Brightness: A Trilogy of Locking, Substitution, and Extension Strategies in Carbonyl–Nitrogen-Based MR-TADF Emitters

doi:10.1002/cptc.202500276

淡江大學機構典藏 > 理學院 > 化學學系暨研究所 > 期刊論文 > Item 987654321/129196

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題名:	Blueprints for Brightness: A Trilogy of Locking, Substitution, and Extension Strategies in Carbonyl–Nitrogen-Based MR-TADF Emitters
作者:	Thomas, K. R. Justin;Rajendran, Vignesh;Chen, Chih-Hsin
日期:	2025-10-28
上傳時間:	2026-04-16 12:05:33 (UTC+8)
摘要:	Multiresonant thermally activated delayed fluorescence (MR-TADF) materials have emerged as next-generation OLED emitters owing to their narrowband emission, high color purity, and potential for 100% exciton utilization. Among the various MR-TADF scaffolds, carbonyl/nitrogen-based, quinolino[3,2,1-de]acridine-5,9-dione (QAO) cores have attracted significant attention due to their modularity and electronic tunability. This review article presents a systematic analysis of recent advancements in QAO-based emitters, categorized into three molecular design strategies: core locking, core substitution, and core extension. Core locking enhances rigidity, minimizes vibrational loss, and narrows emission profiles critically mandated by blue-emitting MR-TADF systems. Substitution at key positions enables fine control over emission wavelength, ΔEST, and photoluminescence quantum yield (ΦPL). Core extension via π-conjugation elongation or fused aromatic units leads to improved device efficiencies and diverse emission colors, including green and deep-blue electroluminescence. Collectively, these strategies have produced emitters with ΦPL exceeding 90%, EQEs above 30%, and full-width half maximums as low as 20 nm. We conclude by highlighting current limitations, including RISC bottlenecks, doping concentration effects, and synthetic challenges, while proposing design pathways toward next-generation multifunctional, solution-processable, and chiral MR-TADF materials. This review article provides a roadmap for advancing carbonyl-nitrogen based MR-TADF emitters toward high-performance OLED technologies.
關聯:	ChemPhotoChem 9(12) , p. e202500276
DOI:	10.1002/cptc.202500276
顯示於類別:	[化學學系暨研究所] 期刊論文

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