Ab initio density functional studies of the restructuring of graphene nanoribbons to form tailored single walled carbon nanotubes

Sumit Saxena, Trevor A. Tyson

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

A method based on density functional theory calculations is proposed for the preparation of chiral controlled single walled carbon nanotubes (SWCNTs) by tailoring the edges of bi-layered graphene nanoribbons (GNRs). We find that armchair edged bi-layered GNRs are highly stable and need to be compressed to overcome the energy barrier to form zigzag SWCNTs, while the zigzag edged bi-layered GNRs are intrinsically highly unstable and immediately form armchair SWCNTs. We have investigated the rehybridization of orbitals of carbon atoms in the process of nanotube formation. Nanotube formation is found to be assisted by the edge ripples along with the intrinsic edge reactivity of different types of bi-layered GNRs. Utilizing these results we show that it may be possible to produce high specificity chiral controlled SWCNTs and pattern them for nanoscale device applications.

Original languageEnglish (US)
Pages (from-to)1153-1158
Number of pages6
JournalCarbon
Volume48
Issue number4
DOIs
StatePublished - Apr 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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