Double boron–oxygen-fused polycyclic aromatic hydrocarbons: skeletal editing and applications as organic optoelectronic materials

Guijie Li (), Kewei Xu, Jianbing Zheng, Xiaoli Fang, Yun-Fang Yang, Weiwei Lou, Qingshan Chu, Jianxin Dai, Qidong Chen, Yuning Yang and Yuan-Bin She ()
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Guijie Li: Zhejiang University of Technology
Kewei Xu: Zhejiang University of Technology
Jianbing Zheng: Zhejiang University of Technology
Xiaoli Fang: Zhejiang University of Technology
Yun-Fang Yang: Zhejiang University of Technology
Weiwei Lou: Zhejiang University of Technology
Qingshan Chu: Zhejiang University of Technology
Jianxin Dai: Zhejiang University of Technology
Qidong Chen: Zhejiang University of Technology
Yuning Yang: Zhejiang University of Technology
Yuan-Bin She: Zhejiang University of Technology

Nature Communications, 2023, vol. 14, issue 1, 1-16

Abstract: Abstract An efficient one-pot strategy for the facile synthesis of double boron–oxygen-fused polycyclic aromatic hydrocarbons (dBO-PAHs) with high regioselectivity and efficient skeletal editing is developed. The boron–oxygen-fused rings exhibit low aromaticity, endowing the polycyclic aromatic hydrocarbons with high chemical and thermal stabilities. The incorporation of the boron–oxygen units enables the polycyclic aromatic hydrocarbons to show single-component, low-temperature ultralong afterglow of up to 20 s. Moreover, the boron–oxygen-fused polycyclic aromatic hydrocarbons can also serve as ideal n-type host materials for high-brightness and high-efficiency deep-blue OLEDs; compared to single host, devices using boron–oxygen-fused polycyclic aromatic hydrocarbons-based co-hosts exhibit dramatically brightness and efficiency enhancements with significantly reduced efficiency roll-offs; device 9 demonstrates a high color-purity (Commission International de l’Eclairage CIEy = 0.104), and also achieves a record-high external quantum efficiency (28.0%) among Pt(II)-based deep-blue OLEDs with Commission International de l’Eclairage CIEy

Date: 2023
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DOI: 10.1038/s41467-023-42973-1

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