Directly observable G band splitting in Raman spectra from individual tubular graphite cones

NG Shang, SRP Silva, X Jiang, P Papakonstantinou

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Individual tubular graphite cones (TGCs) are characterized using Raman spectroscopy atroom temperature. A split G band at 1569–1587 cmÿ1 is directly observed from the root tothe tip of TGCs without requiring surface electromagnetic and chemical enhancementeffects. The G band can be deconvoluted into two Lorentzian peaks at 1571 ± 2 and1584 ± 3 cmÿ1, which may be attributed to the resonance enhancement of a single chiralityexcitation in the innermost tubes and all constituent tubes of the TGCs, respectively.Results suggest that the splitting of G band can be envisaged as a fingerprint for monochiralityof tubular carbon nanomaterials.
Original languageEnglish
Pages (from-to)3048-3054
JournalCarbon
Volume49
DOIs
Publication statusPublished - 17 Mar 2011

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