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

被引：16

作者：

Shang, N. G. ^{[1
]}

Silva, S. R. P. ^{[1
]}

Jiang, X. ^{[2
]}

Papakonstantinou, P. ^{[3
]}

机构：

[1] Univ Surrey, Adv Technol Inst, Surrey GU2 7XH, England

[2] Univ Siegen, Inst Mat Engn, D-57076 Siegen, Germany

[3] Univ Ulster, Nanotechnol & Integrated Bioengn Ctr, Newtownabbey BT37 0QB, North Ireland

来源：

CARBON | 2011年 / 49卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

AMORPHOUS-CARBON; SPECTROSCOPY; MODES; NANOTUBES; DIAMOND;

D O I：

10.1016/j.carbon.2011.03.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Individual tubular graphite cones (TGCs) are characterized using Raman spectroscopy at room temperature. A split G band at 1569-1587 cm(-1) is directly observed from the root to the tip of TGCs without requiring surface electromagnetic and chemical enhancement effects. The G band can be deconvoluted into two Lorentzian peaks at 1571 +/- 2 and 1584 +/- 3 cm(-1), which may be attributed to the resonance enhancement of a single chirality excitation 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 monochirality of tubular carbon nanomaterials. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3048 / 3054

页数：7

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