Charge-transfer behavior of polyaniline single wall carbon nanotubes nanocomposites monitored by resonance Raman spectroscopy
Version of Record online: 18 JAN 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 41, Issue 12, pages 1587–1593, December 2010
How to Cite
do Nascimento, G. M., Silva, T. B., Corio, P. and Dresselhaus, M. S. (2010), Charge-transfer behavior of polyaniline single wall carbon nanotubes nanocomposites monitored by resonance Raman spectroscopy. J. Raman Spectrosc., 41: 1587–1593. doi: 10.1002/jrs.2598
- Issue online: 16 DEC 2010
- Version of Record online: 18 JAN 2010
- Manuscript Accepted: 19 NOV 2009
- Manuscript Received: 23 FEB 2009
- charge transfer;
- carbon nanotubes;
- Raman spectra
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 Elaser = 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 © 2010 John Wiley & Sons, Ltd.