Dinaphthobenzo[1,2:4,5]dicyclobutadiene: Antiaromatic and Orthogonally Tunable Electronics and Packing
作者:Zexin Jin、Ze-Fan Yao、Kayla P. Barker、Jian Pei、Yan Xia
DOI:10.1002/anie.201812581
日期:2019.2.11
Polycyclic conjugated hydrocarbons containing antiaromatic four‐membered cyclobutadienoids (CDB) are of great fundamental and technical interest. However, their challenging synthesis has hampered the exploration and understanding of such systems. Reported herein is a modular and efficient synthesis of novel CBD‐containing acene analogues, dinaphthobenzo[1,2:4,5]dicyclobutadiene (DNBDCs), with orthogonally
含有抗芳族四元环丁二烯(CDB)的多环共轭烃具有重要的基础和技术意义。然而,它们具有挑战性的综合妨碍了对这种系统的探索和理解。本文报道了新型的含CBD的并苯类似物,二萘并苯并[1,2:4,5]二环丁二烯(DNBDCs)的模块化和有效合成,具有正交可调的电子特性和分子堆积。该设计还具有CBD单元强大的抗芳香性,如不依赖核的化学位移和感应电流密度计算的各向异性以及X射线晶体学所揭示。调整甲硅烷基取代基的大小可产生最有利的三异丁基甲硅烷基-DNBDC的“砖层”堆积,电荷迁移率最高可达0.52 cm 2 V -1 s -1在场效应晶体管中。