深红色高性能有机发光二极管非常罕见,这是因为能级定律(energy gap law)导致。有鉴于此,清华大学段炼、Dongdong Zhang等报道一种B、N原子修饰多环杂芳烃,其中含有π-成键/非键杂环轨道,因此突破了荧光边界,实现了记录最高的28 %外量子效率。
参考文献
Yuewei Zhang, Dr. Dongdong Zhang, Tianyu Huang, Dr. Alexander J. Gillett, Dr. Yang Liu, Dr. Deping Hu, Linsong Cui, Zhengyang Bin, Guomeng Li, Dr. Jinbei Wei, Prof. Lian Duan, Multi-Resonance Deep-Red Emitters with Shallow Potential-Energy Surfaces to Surpass Energy-Gap Law, Angew. Chem. Int. Ed. 2021
DOI: 10.1002/anie.202107848
https://www.onlinelibrary.wiley.com/doi/full/10.1002/anie.202107848