受限线性碳链：一种获得大块碳炔的途径
Confined linear carbon chains: A route to bulk carbyne
摘要：
碳炔（无限sp1杂化碳链）的极端不稳定性和强化学活性是其在环境条件下存活的可能性低的原因。因此，与其他新型碳同素异形体如富勒烯、纳米管和石墨烯相比，对碳炔的探索要少得多。虽然封端基团可以用来稳定碳链，但长度限制仍然是其实际生产的障碍，甚至更多的应用。在这里，我们报告了一种新的路线，大量生产记录长的炔属线性碳链薄的双壁碳纳米管的保护。一个相应的极高的拉曼谱带是一个真正的批量产量形成非常长的安排，这是明确证实了透射电子显微镜和近场拉曼光谱的第一个证据。我们的生产建立了一种方法，以非常长的稳定碳链，包括超过2300个碳原子，并朝着大规模生产基本上无限的碳炔的最终目标优雅的先驱。
英文摘要：
The extreme instability and strong chemical activity of carbyne, the infinite sp1 hybridized carbon chain, are responsible for its low possibility to survive in ambient conditions. Therefore, much less has been possible to explore about carbyne as compared to other novel carbon allotropes such as fullerenes, nanotubes and graphene. Although end-capping groups can be used to stabilize carbon chains, length limitation is still a barrier for its actual production, and even more for applications. Here, we report a novel route for bulk production of record long acetylenic linear carbon chains protected by thin double-walled carbon nanotubes. A corresponding extremely high Raman band is the first proof of a truly bulk yield formation of very long arrangements, which is unambiguously confirmed by transmission electron microscopy and near-field Raman spectroscopy. Our production establishes a way to exceptionally long stable carbon chains including more than 2300 carbon atoms, and an elegant forerunner towards the final goal of a bulk production of essentially infinite carbyne.
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