Formation and Properties of Selenium Double-Helices inside Double-Wall Carbon Nanotubes: Experiment and Theory
Abstract
We report the production of covalently bonded selenium double-helices within the narrow cavity inside double-wall carbon nanotubes. The double-helix structure, characterized by high-resolution transmission electron microscopy and X-ray diffraction, is completely different from the bulk atomic arrangement and may be considered a new structural phase of Se. Supporting ab initio calculations indicate that the observed encapsulated Se double-helices are radially compressed and have formed from free Se atoms or short chains contained inside carbon nanotubes. The calculated electronic structure of Se double-helices is very different from the bulk system, indicating the possibility to develop a new branch of Se chemistry.
Keywords
Cite
@article{arxiv.1305.4420,
title = {Formation and Properties of Selenium Double-Helices inside Double-Wall Carbon Nanotubes: Experiment and Theory},
author = {Toshihiko Fujimori and Renato Batista dos Santos and Takuya Hayashi and Morinobu Endo and Katsumi Kaneko and David Tománek},
journal= {arXiv preprint arXiv:1305.4420},
year = {2013}
}
Comments
25 pages, 7 figures, ACS Nano in Press (2013)