There have been scarce reports about stereoscopic design of N-heteroacenes (NHAs), especially for the electron-deficient π-building blocks. Herein, we report the design and synthesis of a U-shaped bis(pyrene-quinoxaline) (BPQ). Single crystal X-ray diffraction reveals the herringbone stacking pattern and the presence of regular and incompletely closed pores.

中文翻译：

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N掺杂纳米石墨烯段的U型立体设计策略

关于 N-杂并苯 (NHA) 的立体设计的报道很少，特别是缺电子的 π 结构单元。在此，我们报告了 U 形双（芘-喹喔啉）（ BPQ）的设计和合成。单晶 X 射线衍射揭示了人字形堆积图案以及规则和不完全闭合孔的存在。