Covalent functionalization of single-walled carbon nanotubes by aniline electroc

2019-08-09 18:30:26

carbon Raman SWNTs PANI nanotubes

责任者: Baibarac, M.;Baltog, I.;Godon, C.;Lefrant, S.;Chauvet, O. 单位: Inst. des Mat. Jean Rouxel, Universite de Nantes, Lab. de Physique Cristalline, 44322 Nantes, Cedex 03, France 来源出处: Carbon,2004,42(15):3143-3152 摘要: Electrochemical polymerization of aniline in an HCl solution on a single-walled carbon nanotubes (SWNTs) film has been studied by Raman and FTIR spectroscopy. It is shown that this method leads to a covalent functionalization of SWNTs with polyaniline (PANI). A careful study in Raman scattering shows that the increase in the intensity of the band at 178 cm-1 associated with radial breathing modes of SWNTs bundles suggests an additional nanotubes roping with PANI as a binding agent. A post chemical treatment with the NH 4OH solution of polymer-functionalized SWNTs involves an internal redox reaction between PANI and carbon nanotubes. As a result, the polymer chain undergoes a transition from the semi-oxidized state into a reduced one. © 2004 Elsevier Ltd. All rights reserved. 关键词: Carbon nanotubes;Electropolymerization;Nitrogen compounds;Redox reactions;Structure (composition);Association reactions;Raman scattering;Fourier transform infrared spectroscopy;Raman spectroscopy;Electrochemical treatment;Polymer chains;Raman bands;Steric hinderance