Isotopic Labelling of Confined Carbyne
Isotopic Labelling of Confined Carbyne
复制标题
受限卡宾的同位素标记
DOI：
10.1002/anie.202017356
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Pichler Thomas
中科院分区：
文献类型：
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作者：
Cui Weili;Shi Lei;Cao Kecheng;Kaiser Ute;Saito Takeshi;Ayala Paola;Pichler Thomas
碳炔是碳的一维同素异形体，由具有特殊强度的相互键合的碳原子的线性链组成。其出色的机械，光学和电子性能已在理论上预测，但其稳定性只有在碳纳米管的中空核心中生长时才能实现。这种限制的优点之一是它的性质可以通过链的长度和周围环境来控制。我们研究了一种获得对其性质控制的替代方法，即使用同位素标记作为调谐机制。在多种选择中，首先选择了最佳的液体前驱体，这可以大大提高受限碳炔的产率。然后将同位素标记的液体前驱体封装起来，进一步合成同位素标记的受限碳炔。这使我们能够使用13 C-甲醇作为前体，获得约11.9%的13 C-标记的同位素工程卡宾的开创性结果。
Carbyne is a one‐dimensional allotrope of carbon consisting of a linear chain of carbon atoms bonded to each other with exceptional strength. Its outstanding mechanical, optical, and electronic properties have been theoretically predicted, but its stability has only been achieved when grown encapsulated in the hollow core of carbon nanotubes. One of the advantages of this confinement is that its properties can be controlled by the chain's length and surrounding environment. We investigated an alternative way of gaining control of its properties is using isotope labelling as tuning mechanism. The optimized liquid precursor was first chosen among several options, which can greatly enhance the yield of the confined carbyne. Then isotopic labelled liquid precursor was encapsulated for further synthesis of isotopic labelled confined carbyne. This allowed us to obtain pioneering results on isotope engineered carbyne with around 11.9 % of13C‐labelling using13C‐methanol as precursor.