Carbon nanomaterials exhibit extraordinary mechanical and electronic properties desirable for future technologies. Beyond the popular sp²‐scaffolds, there is growing interest in their graphdiyne‐related counterparts incorporating both sp² and sp bonding in a regular scheme. Herein, we introduce carbonitrile‐functionalized graphdiyne nanowires, as a novel conjugated, one‐dimensional (1D) carbon nanomaterial systematically combining the virtues of covalent coupling and supramolecular concepts that are fabricated by on‐surface synthesis. Specifically, a terphenylene backbone is extended with reactive terminal alkyne and polar carbonitrile (CN) moieties providing the required functionalities. It is demonstrated that the CN functionalization enables highly selective alkyne homocoupling forming polymer strands and gives rise to mutual lateral attraction entailing room‐temperature stable double‐stranded assemblies. By exploiting the templating effect of the vicinal Ag(455) surface, 40 nm long semiconducting nanowires are obtained and the first experimental assessment of their electronic band structure is achieved by angle‐resolved photoemission spectroscopy indicating an effective mass below 0.1m₀ for the top of the highest occupied band. Via molecular manipulation it is showcased that the novel oligomer exhibits extreme mechanical flexibility and opens unexplored ways of information encoding in clearly distinguishable CN‐phenyl trans–cis species. Thus, conformational data storage with density of 0.36 bit nm⁻² and temperature stability beyond 150 K comes in reach.

中文翻译：

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功能化的Graphdiyne纳米线：表面合成以及能带结构，柔性和信息存储潜力的评估

碳纳米材料展现出未来技术所需的非凡的机械和电子性能。除了流行的sp ²支架以外，对于与石墨烯相关的对应物，将sp ²和sp ²都包含在内，人们越来越感兴趣并按常规方案进行sp键合。在本文中，我们介绍了将腈腈官能化的石墨烯纳米线作为一种新型共轭一维（1D）碳纳米材料，系统地结合了共价偶联和通过表面合成制备的超分子概念的优点。具体而言，将亚联苯骨架延伸至反应性末端炔烃和极性腈（CN）部分，从而提供所需的功能。结果表明，CN功能化可实现高度选择性的炔烃均聚物形成聚合物链，并引起相互的侧向吸引，从而使室温下稳定的双链组装成为可能。通过利用邻近的Ag（455）表面的模板效应，m ₀为最高占用频段的顶部。通过分子操作可以证明，这种新型低聚物具有极高的机械柔韧性，并为可清晰区分的CN-苯基反式-顺式物种开辟了信息编码的未探索方式。因此，达到具有0.36位nm ^-2的密度和超过150 K的温度稳定性的构象数据存储。