Herein, we demonstrate a novel one‐pot synthetic method towards a series of boron‐doped polycyclic aromatic hydrocarbons (B‐PAHs, 1 a–1 o), including hitherto unknown B‐doped zethrene derivatives, from ortho‐aryl substituted diarylalkynes with high atom efficiency and broad substrate scopes. A reaction mechanism is proposed based on the experimental investigation together with the theoretical calculations, which involves a unique 1,4‐boron migration process. The resultant benchtop‐stable B‐PAHs are thoroughly investigated by X‐ray crystallography, cyclic voltammetry, UV/Vis absorption, and fluorescence spectroscopies. The blue and green organic light‐emitting diode (OLED) devices based on 1 f and 1 k are further fabricated, demonstrating the promising application potential of B‐PAHs in organic optoelectronics.

中文翻译：

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1,4-硼迁移一锅法合成硼掺杂多环芳烃

在此，我们展示了一种新颖的一锅法合成一系列硼掺杂多环芳烃（B-PAHs，1a - 1o），包括迄今为止未知的B掺杂氮烯衍生物，该方法由邻位芳基取代的二芳基炔烃合成，具有高原子效率和广泛的底物范围。基于实验研究和理论计算，提出了一种反应机理，其中涉及独特的 1,4-硼迁移过程。通过 X 射线晶体学、循环伏安法、紫外/可见光吸收和荧光光谱对所得台式稳定的 B-PAH 进行了彻底研究。进一步制备了基于1f和1k的蓝色和绿色有机发光二极管（OLED）器件，展示了B-PAHs在有机光电子学中的广阔应用潜力。