1,1′-Biaceanthrylene and 2,2′-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings
作者:Yachu Du、Lichang Wang、Kyle N. Plunkett
DOI:10.1021/acs.joc.9b02118
日期:2020.1.3
linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2'-biaceanthrylene) or inward (1,1'-biaceanthrylene), and the optical and electronic properties were compared. Only the planar 2,2'-biaceanthrylene system showed
我们表明,连接在两个五元环之间的多环芳香烃(PAH)生色团可以访问具有减少的光学间隙和氧化还原电位的平面化结构。将两个乙炔发色团连接到二聚体模型系统中,发色团向外突出(2,2'-二乙撑)或向内突出(1,1'-二乙撑),并比较了光学和电子性质。相对于乙炔单体,仅平面的2,2'-二乙撑体系显示出光学间隙(1 eV)和氧化还原电势显着降低。制备了基于2,2'-二蒽的有机场效应晶体管,发现该晶体管在空穴传输方式下工作,平均载流子迁移率为1.8×10-4 cm2 V-1 s-1。