Effects of self-assembly process of latex spheres on the final topology of macroporous silica

dc.contributor.authorBarros, D. A.
dc.contributor.authorHisano, C.
dc.contributor.authorBertholdo, R.
dc.contributor.authorSchiavetto, M. G.
dc.contributor.authorSantilli, C.
dc.contributor.authorRibeiro, SJL
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.institutionFac COC
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:13Z
dc.date.available2014-05-20T15:30:13Z
dc.date.issued2005-11-15
dc.description.abstractThis paper surveys the topology of macroporous silica prepared using latex templates covering the submicrometric range (0.1-0.7 mu m). The behavior of latex spheres in aqueous dispersion has been analyzed by dynamic light scattering (DLS) measurement indicating the most appropriate conditions to form well-defined cubic arrays. The optical behavior of latex spheres has been analyzed by transmittance and reflectance measurements in order to determine their diameter and filling factor when they were assembled in bidimensional arrays. Macroscopic templates have been obtained by a centrifugation process and their crystalline ordering has been confirmed by porosimetry and scanning electron microscopy. These self-assembled structures have been used to produce macroporous silica, whose final topology depends on the pore size distribution of the original template. It has been seen that latex spheres are ordered in a predominant fcc arrangement with slipping of tetragonal pores due to the action of attractive electrostatic interactions. The main effect is to change the spherical shape of voids in macroporous silica into a hexagonal configuration with possible applications to fabricate photonic devices with novel optical properties. (c) 2005 Elsevier B.V. All rights reserved.en
dc.description.affiliationFac COC, BR-14096160 Ribeirao Preto, SP, Brazil
dc.description.affiliationUNESP, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim Araraquara, BR-14800900 Araraquara, SP, Brazil
dc.format.extent448-464
dc.identifierhttp://dx.doi.org/10.1016/j.jcis.2005.05.016
dc.identifier.citationJournal of Colloid and Interface Science. San Diego: Academic Press Inc. Elsevier B.V., v. 291, n. 2, p. 448-464, 2005.
dc.identifier.doi10.1016/j.jcis.2005.05.016
dc.identifier.issn0021-9797
dc.identifier.lattes6446047463034654
dc.identifier.lattes2998503841917815
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.urihttp://hdl.handle.net/11449/39650
dc.identifier.wosWOS:000232815500017
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Colloid and Interface Science
dc.relation.ispartofjcr5.091
dc.relation.ispartofsjr1,221
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectlatex spherespt
dc.subjectphotonic crystalspt
dc.subjectchemical templatept
dc.subjectmacroporous silicapt
dc.subjectporous materialpt
dc.subjectself-assemblypt
dc.subjectthin filmspt
dc.subjectcolloid stabilitypt
dc.titleEffects of self-assembly process of latex spheres on the final topology of macroporous silicaen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes6446047463034654
unesp.author.lattes2998503841917815
unesp.author.lattes5584298681870865[5]
unesp.author.orcid0000-0002-8356-8093[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição: