2013/05/20 by Toshihiko Fujimori, Renato Batista dos Santos, Fujimori, Toshihiko +9 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #82D80 #Carbon Nanotubes in Composites #FOS: Physical sciences #Fullerene Chemistry and Applications #Graphene research and applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall #msc:82D80
paper · pdf · doi:10.48550/arxiv.1305.4420
25 pages, 7 figures, ACS Nano in Press (2013)
arxiv created 2013/05/20 · openalex publication_date 2013/05/20 · arxiv updated 2013/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.