Chiral graphene nanoribbons represent an important class of graphene nanomaterials with varying combinations of armchair and zigzag edges conferring them unique structure‐dependent electronic properties. Here, we describe the on‐surface synthesis of an unprecedented cove‐edge chiral GNR with a benzo‐fused backbone on a Au(111) surface using 2,6‐dibromo‐1,5‐diphenylnaphthalene as precursor. The initial precursor self‐assembly and the formation of the chiral GNRs upon annealing are revealed, along with a relatively small electronic bandgap of approximately 1.6 eV, by scanning tunnelling microscopy and spectroscopy.

中文翻译：

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具有混合边缘结构的手性石墨烯纳米带的表面合成。

手性石墨烯纳米带代表一类重要的石墨烯纳米材料，具有扶手椅和锯齿形边缘的不同组合，赋予它们独特的结构依赖性电子特性。在这里，我们描述了使用2,6-二溴-1,5-二苯基萘作为前体在Au（111）表面上具有苯并稠合骨架的前所未有的凹形边缘手性GNR的表面合成。通过扫描隧道显微镜和光谱学，揭示了初始的前体自组装和退火后手性GNR的形成，以及相对较小的约1.6 eV电子带隙。