Molecular-topology-guided multiple-resonance emitters with sub-10-nm bandwidths: ultranarrow high-efficiency solution-processable OLEDs
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ID: 318198
2026
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Abstract
Abstract Ultranarrow-band emitters are essential for high-colour-purity organic light-emitting diodes, but their discovery remains largely empirical because spectral narrowing is difficult to predict. Progress has been limited by inefficient synthesis-and-testing cycles and the lack of simple design rules linking molecular structure to excited-state relaxation. Here we establish a predictive design framework for ultranarrow multiple-resonance emitters by treating molecular topology as an explicit handle on structural relaxation. High-throughput screening of B, N-doped triangulene fusion modes identifies an alternating fusion pattern that minimizes reorganization energy and yields a ground-state descriptor for spectral narrowing without explicit excited-state calculations. Guided by this framework, we synthesize sky-blue emitters with photoluminescence bandwidths down to 9.1 nm and solution-processed devices with 10.9-nm electroluminescence bandwidths and 38.1% external quantum efficiency.
| Reference Key |
openalex_W7165563790
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|---|---|
| Authors | Tao Hua, Nengquan Li, Xiaosong Cao, Cheng Zhong, Jingsheng Miao, Zhongyan Huang, Xiaojun Yin, Shaolong Gong, Zhanxiang Chen, Yu Zhang, Chuluo Yang |
| Journal | national science review |
| Year | 2026 |
| DOI |
10.1093/nsr/nwag377
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| URL | |
| Keywords | Keywords not found |
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