Spectroscopic Evidence of Carbon Nanotubes' Metallic Character Loss Induced by Covalent Functionalization via Nitric Acid Purification

被引：79
作者：
Bergeret, Celine [1 ]
Cousseau, Jack [1 ]
Fernandez, Vincent [2 ]
Mevellec, Jean-Yves [2 ]
Lefrant, Serge [2 ]
机构：
[1] Univ Angers, CIMA Lab, CNRS, UMR 6200, F-49045 Angers 01, France
[2] Univ Nantes, Inst Mat Jean Rouxel, CNRS, UMR 6502, F-44322 Nantes 03, France
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 42期
关键词：
D O I：
10.1021/jp806602t
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：
A detailed characterization of covalently functionalized HiPco single-walled carbon nanotubes (SWNTs) has been carried out using several physicochemical methods (thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and Raman scattering). The chemical process, finally leading to SWNT-ester derivatives, starts from nitric acid purification of pristine SWNTs. Besides the efficiency of the functionalization, we show that a loss of metallic character of the carbon nanotubes is initiated by the nitric acid treatment of pristine SWNTs and is maintained in the final SWNT ester derivatives. A higher reactivity of the metallic tubes is also demonstrated.
引用
收藏
页码：16411 / 16416
页数：6
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