Structurally well-defined arenes with higher numbers of linearly-fused six-member rings (n ≥ 10) are important and highly desirable not only because of their experimental challenges but also due to their fundamental interests and the curiosity of their structure–property relationships. In this research, we successfully synthesized a novel large N-heteroarene ( N20) with 20 linearly-fused six-membered rings, which is the longest N-heteroarene (4.7 nm) confirmed by single-crystal X-ray diffraction (SCXRD) analysis so far. The as-prepared arene displays a wave-like framework rather than a rigid plane. Moreover, N20 shows high molar absorptivity of 364,000 M⁻¹ cm⁻¹ with its fluorescence extended to the near-infrared region.

具有更多线性稠合六元环（ n≥10 ）的结构明确的芳烃 很重要且非常理想，这不仅是因为它们的实验挑战，而且还因为它们的基本兴趣和对结构-性能关系的好奇。在本研究中，我们成功合成了一种新型的大N-杂芳烃（ N20) 具有 20 个线性稠合的六元环，这是迄今为止通过单晶 X 射线衍射 (SCXRD) 分析证实的最长的N-杂芳烃 (4.7 nm)。所制备的芳烃显示出波浪状框架而不是刚性平面。而且， N20^{显示出364,000 M -1} cm ^-1的高摩尔吸收率，其荧光扩展到近红外区域。