Two-phonon combination Raman modes in covalently functionalized single-wall carbon nanotubes

被引：45

作者：

Fantini, C. ^{[1
]}

Pimenta, M. A. ^{[2
]}

Strano, M. S. ^{[3
]}

机构：

[1] Ctr Desenvolvimento Tecnol Nucl, BR-31270901 Belo Horizonte, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Fis, BR-31270901 Belo Horizonte, MG, Brazil

[3] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 34期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1021/jp803855z

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：

Single-wall carbon nanotubes covalently functionalized with chloro-phenyl groups were investigated by Raman spectroscopy. We examine the features observed in the spectral ranges 350-1200, 1650-2000, and 2400-3200 cm(-1). The Raman modes associated with the presence of defects, strongly enhanced by the functionalization are clearly distinguished from those defect independent. We indicate that some features highly enhanced by the electron-phonon coupling are very sensitive to charge transfers between the nanotubes and functional groups. A feature at similar to 2900 cm(-1) is observed in the spectra of functionalized nanotubes, and its origin is explained here as a combination of two disorder-induced modes.

引用

页码：13150 / 13155

页数：6

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