Charge-transfer behavior of polyaniline single wall carbon nanotubes nanocomposites monitored by resonance Raman spectroscopy

被引：27

作者：

do Nascimento, Gustavo M. ^{[1
,2
]}

Silva, Tilana B. ^{[1
]}

Corio, Paola ^{[1
]}

Dresselhaus, Mildred S. ^{[2
,3
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo, Brazil

[2] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2010年 / 41卷 / 12期

基金：

巴西圣保罗研究基金会;

关键词：

charge transfer; carbon nanotubes; polyaniline; Raman spectra; VIBRATIONAL-SPECTRA; FUNCTIONALIZATION; COMPOSITES; CHEMISTRY;

D O I：

10.1002/jrs.2598

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Highly dispersed nanocomposites of polyaniline(PANI) and oxidized single wall carbon nanotubes(SWNTs) have been prepared using dodecylbenzenesulfonic acid as dispersant. The materials were characterized via resonance Raman and electronic absorption spectroscopies. The behavior of the composites as a function of the applied potential was also investigated using in situ Raman electrochemical measurements. The results obtained at E-laser = 1.17 eV suggest that a charge-transfer process occur between PANI and semiconducting nanotubes for samples where the metallic tubes are previously oxidized. The spectroelectrochemical data show that the presence of SWNTs prevents the oxidation of PANI rings. Copyright (C) 2010 John Wiley & Sons, Ltd.

引用

页码：1587 / 1593

页数：7

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