Bilayer Plots for Accurately Determining the Chirality of Single-Walled Carbon Nanotubes Under Complex Environments.

ACS nano(2017)

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摘要
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 (Eii's) of SWNTs with various (n,m) with respect to the tube diameter (dt), has been widely utilized by researchers in the nanotube community for all (n,m)-related studies. However, the fact that both Eii and the calculated dt are subject to interactions with the environments makes it inconvenient to accurately determine the (n,m) under complex environments. Here, we propose a series of new "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. The new plots are 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.
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关键词
single-walled carbon nanotubes,chirality assignments,bilayer plots,Kataura plot,Raman spectroscopy
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