organic electron acceptors is to attach electron-withdrawing groups to polycyclic aromatic hydrocarbons. Yet, the full potentials of many organic acceptors were never realized due to synthetic obstacles. By combining the Wittig–Knoevenagel benzannulation, the Pd(0)-catalyzed cyanation, and nucleophilic addition/oxidation cyanation, six polynitrile Z-shaped perylene diimide were synthesized. These stable and
构建有机电子受体的中心法则是将吸电子基团连接到多环
芳烃上。然而,由于合成障碍,许多有机受体的全部潜力从未实现。通过结合 Wittig-Knoevenagel 苯环化、Pd(0) 催化的
氰化和亲核加成/氧化
氰化,合成了六聚腈 Z 形
苝二
酰亚胺。这些稳定且可溶的电子受体具有与基准化合物相当的 LUMO 能级。电
化学研究表明,每增加一个腈基,LUMO 能量就会降低 0.2 eV。