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The importance of Doped and Defective Carbon Nanotubes forDeveloping Emerging Technologies

机译：掺杂和有缺陷的碳纳米管对新兴技术的重要性

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The latest advances in the production and state-of-the art characterization of B- and N-doped carbon nanotubes andnanofibers will be presented. The efficient synthesis of N- and B-doped carbon nanotubes using thermolytic and low costprocesses will be discussed. Due to the presence of B and N, the reactivity of the nanotubes is improved considerably. It willbe demonstrated that these doped systems are able to behave as efficient field emission sources, gas sensors and proteinimmobilizers. Novel Biological applications will aslo be demonstrated. We envisage that Raman spectroscopy could bean efficent way of detecting low concentrations of dopants (e.g. < 1%) and even defects. It will also be demonstrated thatnon-hexagonal carbon rings (e.g. pentagons, heptagons and octagons) incorporated in sp2-hybridized closed nanostructuresare responsible of changing significantly the mechanical, electronic and magnetic properties. In this context, the coalescenceprocess of C60 molecules inside single-walled carbon nanotubes (SWNTs) is studied under an electron beam. Tight bindingmolecular dynamics calculations demonstrate that vacancies and intesrtitials, formed under the electron beam, trigger theformation of molecular junctions involving seven or eight membered carbon rings.
机译：B和N掺杂的碳纳米管和碳纳米管的生产和表征的最新进展 将介绍纳米纤维。利用热分解和低成本高效合成N和B掺杂的碳纳米管 过程将进行讨论。由于存在B和N，因此大大改善了纳米管的反应性。它会 证明这些掺杂系统能够充当有效的场发射源，气体传感器和蛋白质 防盗器。还将展示新型生物应用。我们设想拉曼光谱可能是 一种检测低浓度掺杂剂（例如<1％）甚至缺陷的有效方法。也将证明 掺入sp2杂化的封闭纳米结构中的非六边形碳环（例如五边形，七边形和八边形） 负责显着改变机械，电子和磁性能。在这种情况下，合并 在电子束下研究单壁碳纳米管（SWNTs）中C60分子的形成过程。紧密装订 分子动力学计算表明，在电子束下形成的空位和整数触发了 形成涉及七个或八个成员碳环的分子连接。

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