Dibenzocircumpentacene: Synthesis, Structure, and Physical Properties

Structurally well-defined zigzag-edged nanographenes hold great potential in nanoelectronics and spintronics. Herein, we reported the synthesis and characterization of a dibenzocircumpentacene derivative (<b>1</b>) featuring multiple zigzag edges, achieved through oxidative cyclodehydrogenation of a bisdibenzophenanthryl-<i>p</i>-terphenyl-based precursor. Because of <i>peri</i>-benzannulation, <b>1</b> exhibits a closed-shell singlet ground state, considerably enhanced stability, and a more localized aromatic characteristic. This work will shed new light on the synthesis of novel zigzag-edged nanographenes with tunable electronic properties and remarkable stability.