作者:Xiaoyu Guo、Ziyong Yuan、Yanpeng Zhu、Zhihao Li、Ruikang Huang、Zeming Xia、Weixiong Zhang、Yang Li、Jiaobing Wang
DOI:10.1002/anie.201907972
日期:2019.11.18
Two synthetic nanographenes (NGs), N-H7H and C-H7H, were prepared. N-H7H is doped with nitrogen, and C-H7H is the all-carbon analogue. Both are hexapole [7]helicenes (H7Hs), and their structures were identified by single-crystal X-ray diffraction. Sharp contrasts in absorption (abs λmax , 683 vs. 593 nm), emission (em λmax , 894 vs. 777 nm), and electrochemical behavior (ox E1 , 0.28 vs. 0.53 V) were
制备了两种合成的纳米石墨烯(NGs)N-H7H和C-H7H。N-H7H掺杂有氮,C-H7H是全碳类似物。两者均为六极[7]螺旋烯(H7Hs),其结构通过单晶X射线衍射鉴定。在N-H7H和C-H7H之间观察到吸收(绝对λmax,683 vs. 593 nm),发射(emλmax,894 vs. 777 nm)和电化学行为(ox E1,0.28 vs. 0.53 V)的鲜明对比。 ,并且通过理论计算合理化了这些差异的由来。对N-H7H和C-H7H的研究为阐明N掺杂对NGs物理性能的显着影响提供了明确的例子。