Synthesis of hybrid silicates containing porphyrins incorporated by a sol-gel process and their properties

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dc.contributor.authorBiazzotto, J. C.
dc.contributor.authorSacco, H. C.
dc.contributor.authorCiuffi, K. J.
dc.contributor.authorNeri, C. R.
dc.contributor.authorFerreira, A. G.
dc.contributor.authorIamamoto, Y.
dc.contributor.authorSerra, O. A.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Franca
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:23:00Z
dc.date.available2014-05-20T15:23:00Z
dc.date.issued1999-05-01
dc.description.abstractPorphyrin was incorporated in a silicate network, via a covalent bond, by grafting a functional group with 3-aminopropyltriethoxysilane, using a sol-gel process. We have carried out the synthesis and measured the absorption spectra, nuclear magnetic resonance spectra, infrared (IR) spectra, luminescence spectra and lifetime of these hybrid silicates, porphyrinosilicas. These samples contained the following free-base porphyrins: meso-tetrakis-p-chlorobenzoylporphyrin, meso-tetrakis-2,6-dichloro-3-chlorosulfonylphenylporphyrin. The obtained porphyrinosilicas have similar absorption and luminescence spectra to the free base porphyrins in solution. IR spectra confirm the formation of monomeric species. Lifetime measurement for porphyrinosilica reveals that 32% +/- 2% of porphyrin is covalently bonded to the silica network. (C) 1999 Elsevier B.V. B.V. All rights reserved.en
dc.description.affiliationUniv São Paulo, FFCLRP, Dept Quim, Rare Earth Lab, BR-14040901 Ribeirao Preto, Brazil
dc.description.affiliationUNESP, Inst Quim, Araraquara, Brazil
dc.description.affiliationUniv Franca, Dept Quim, Franca, SP, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Quim, BR-13560 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, Araraquara, Brazil
dc.format.extent134-140
dc.identifierhttp://dx.doi.org/10.1016/S0022-3093(99)00050-2
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 247, p. 134-140, 1999.
dc.identifier.doi10.1016/S0022-3093(99)00050-2
dc.identifier.issn0022-3093
dc.identifier.urihttp://hdl.handle.net/11449/33874
dc.identifier.wosWOS:000080506900025
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleSynthesis of hybrid silicates containing porphyrins incorporated by a sol-gel process and their propertiesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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