Graphene nanoribbons (GNRs) and their derivatives are receiving increasing attention as a result of their unique electronic and magnetic properties, and many novel derivative structures have been fabricated. The carbon pentagon plays a crucial role in determining both geometric structures and electronic properties of carbon-based materials. Here, we demonstrate that carbon-pentagon-incorporated graphene-like nanoribbons (GLNRs), which are an important class of GNR derivatives, are successfully fabricated via the Ullmann coupling and aromatic cyclodehydrogenation reaction on the surface by a suitable choice of multiple tailored molecular precursors. Our approach provides a basis for the impact of adatoms in the reaction and proves the steering function of the aryl–metal interaction in procedures of self-assembly and organometallic state. In addition, this study paves the way for on-surface synthesis of GNRs and their derivatives as well as the fine tuning of electronic properties of carbon nanoarchitectures by manipulating the edge structures and embedding carbon pentagon heterojunctions.

中文翻译：

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具有多种前驱体的五边形掺入类石墨烯纳米带的表面合成

石墨烯纳米带（GNRs）及其衍生物由于其独特的电子和磁性特性而受到越来越多的关注，并且已经制造了许多新颖的衍生物结构。碳五边形在决定碳基材料的几何结构和电子特性方面起着至关重要的作用。在这里，我们证明了碳五边形结合的类石墨烯纳米带（GLNRs）是一类重要的 GNR 衍生物，通过适当选择多种定制分子前体，通过表面上的 Ullmann 偶联和芳环脱氢反应成功制备。 . 我们的方法为吸附原子在反应中的影响提供了基础，并证明了芳基-金属相互作用在自组装和有机金属态过程中的导向作用。