Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China.
ACS Nano. 2017 Oct 24;11(10):10509-10518. doi: 10.1021/acsnano.7b05860. Epub 2017 Oct 6.
The chirality (n,m) determines all structures and properties of a single-walled carbon nanotube (SWNT), therefore, accurate and convenient (n,m) assignments are vital in nanotube-related science and technology. Previously, a so-called Kataura plot that protracts the excitonic transition energies (E's) of SWNTs with various (n,m) with respect to the tube diameter (d) has been widely utilized by researchers in the nanotube community for all (n,m)-related studies. However, the facts that both E and the calculated d are subject to interactions with the environments make it inconvenient to accurately determine the (n,m) under complex environments. Here, we propose a series of bilayer plots that take into account the interactions between the SWNTs and the environments so that the (n,m) of SWNTs can be accurately determined. These plots have more advantages than the Kataura plot in concision, less data overlapping, and the suitability to be used in complex environments. We strongly encourage the researchers in the carbon nanotube community to utilize the bilayer plots for all (n,m)-related studies, especially for accurate and convenient (n,m) determination.
手性(n,m)决定了单壁碳纳米管(SWNT)的所有结构和性质，因此，在纳米管相关的科学和技术中，准确和方便的(n,m)分配至关重要。以前，所谓的 Kataura 图，它将具有各种(n,m)的 SWNTs 的激子跃迁能量(E)相对于管直径(d)展开，已经被纳米管社区的研究人员广泛用于所有(n,m)相关的研究。然而，E 和计算出的 d 都受到与环境相互作用的事实，使得在复杂环境下准确确定(n,m)变得不方便。在这里，我们提出了一系列考虑到 SWNTs 与环境之间相互作用的双层图，以便能够准确确定 SWNTs 的(n,m)。这些图在简洁性、较少的数据重叠以及适用于复杂环境方面比 Kataura 图具有更多的优势。我们强烈鼓励碳纳米管社区的研究人员在所有(n,m)相关的研究中使用双层图，特别是用于准确和方便的(n,m)确定。
