In the Review Article (DOI: 10.1002/adom.202501289), Yanan Zhu and co-workers summarize progress in nitrogen/carbonyl (N/C═O) framework-based multi-resonance thermally activated delayed fluorescence emitters, focusing on quinolino[3,2,1-de]acridine-5,9dione (QAO) derivatives for narrowband emission in high-performance OLEDs. With over 100 derivatives, it provides design principles, highlighting N/C═O MR-core as a promising scaffold for advanced displays.
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