Jing-Cai Zeng, Kexiang Zhao, Peng-Fei Zhang, Fang-Dong Zhuang, Li Ding, Ze-Fan Yao, Jie-Yu Wang, Jian Pei

Assessing the Role of BN‐Embedding Position in B2N2‐Perylenes

  • General Chemistry
  • Catalysis
  • Organic Chemistry
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Incorporating heteroatoms can effectively modulate the molecular optoelectronic properties. However, the fundamental understanding of BN doping effects in BN‐embedded polycyclic aromatic hydrocarbons (PAHs) is underexplored, lacking rational guidelines to modulate the electronic structures through BN units for advanced materials. Herein, a concise synthesis of novel B2N2‐perylenes with BN doped at the bay area is achieved to systematically explore the doping effect of BN position on the photophysical properties of PAHs. The shift of BN position in B2N2‐perylenes alters the π electron conjugation, aromaticity and molecular rigidness significantly, achieving substantially higher electron transition abilities than those with BN doped in the nodal plane. It is further clarified that BN position dominates the photophysical properties over BN orientation. The revealed guideline here may apply generally to novel BN‐PAHs, and aid the advancement of BN‐PAHs with highly‐emissive performance.

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