Evaluation of the doping process of polyaniline produced inside the mesopores of a sulfonic acid grafted MCM-41

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dc.contributor.author Fonseca, Leandro C. [UNIFESP]
dc.contributor.author Faez, Roselena [UNIFESP]
dc.contributor.author Camilo, Fernanda F. [UNIFESP]
dc.contributor.author Bizeto, Marcos A. [UNIFESP]
dc.date.accessioned 2016-01-24T14:27:38Z
dc.date.available 2016-01-24T14:27:38Z
dc.date.issued 2012-09-01
dc.identifier http://dx.doi.org/10.1016/j.micromeso.2012.04.006
dc.identifier.citation Microporous and Mesoporous Materials. Amsterdam: Elsevier B.V., v. 159, p. 24-29, 2012.
dc.identifier.issn 1387-1811
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/35232
dc.description.abstract The use of mesoporous materials as hosts for polymers production in a confined environment is a field of great interest, especially in the case of conducting polymers. This method provides size and morphological control in nanoscopic scale and permits the formation of polymeric chains with good linearity and fewer defects, characteristics that could promote enhanced electrical conductivity.In this study it was evaluated some aspects of the polymerization of aniline inside the pores of the MCM-41 silica post-modified with sulfonic acid groups (-SO3H) covalently bonded to the surfaces. the produced hybrid material containing polyaniline (PAni) into the pores was characterized by X-ray diffractometry, thermogravimetric analysis, UV-Vis electronic absorption, Fourier transformed infrared spectroscopies and scanning and transmission electron microscopies.The results indicate that PAni was successfully generated inside the pores of the sulfonic acid grafted MCM-41 and that the acid group was capable of protonating the polymer, producing PAni in the emeraldine salt state, the most conductive one, without the addition of another acid source during the polymerization step. the grafted sulfonic acid groups also promoted a stronger interaction between inorganic matrix and aniline than the observed in non-functionalized MCM-41, which resulted in less monomer and polymer lixiviation during the polymerization step. (C) 2012 Elsevier Inc. All rights reserved. en
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorship Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent 24-29
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Microporous and Mesoporous Materials
dc.rights Acesso restrito
dc.subject Mesoporous silica en
dc.subject Polyaniline en
dc.subject Sulfonic acid post-grafting en
dc.subject In situ polymerization en
dc.subject Hybrid nanomaterial en
dc.title Evaluation of the doping process of polyaniline produced inside the mesopores of a sulfonic acid grafted MCM-41 en
dc.type Artigo
dc.rights.license http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Universidade Federal de São Paulo, Lab Mat Hibridos, Inst Ciencias Ambientais Quim & Farmaceut, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Lab Mat Hibridos, Inst Ciencias Ambientais Quim & Farmaceut, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, Brazil
dc.identifier.doi 10.1016/j.micromeso.2012.04.006
dc.description.source Web of Science
dc.identifier.wos WOS:000305917700004



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