Gamma-ray dosimetric properties of conjugated polymers in solution

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dc.contributor.authorBatagin Neto, Augusto [UNESP]
dc.contributor.authorBronze-Uhle, Erika Soares [UNESP]
dc.contributor.authorVismara, Marcus Vinícius Gonçalves [UNESP]
dc.contributor.authorAssis, Andrei Paulo de [UNESP]
dc.contributor.authorCastro, Fernando Araújo de [UNESP]
dc.contributor.authorLavarda, Francisco Carlos [UNESP]
dc.contributor.authorGraeff, Carlos Frederico de Oliveira [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2016-03-02T13:00:31Z
dc.date.available2016-03-02T13:00:31Z
dc.date.issued2013
dc.description.abstractThe effect of gamma radiation on poly{[2,5-bis(3-(N,N-diethylamino)-1-oxapropyl)-1,4-phenylene]-alt-1,4- phenylene} (PPP); poly{[2,5-bis(3-(N,N-diethylammonium bromide)-1-oxapropyl)-1,4-phenylene]-alt-1,4-phenylene} (PPP-Br); and the polymerized dye poly-1-ethyl-2-[3-(1-ethyl-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene)-1-propenyl]- 3,3-dimethyl-3H-indolium perchlorate (Poly-CyC) has been investigated. The stability and response of poly [2-methoxy- 5-(2'- ethyl-hexyloxy)-p-phenylenevinylene] (MEH-PPV) in mixed solutions have also been explored. To this end, samples with concentrations ranging from 0.005 to 0.500 mg/mL were irradiated with a 60Co gamma-ray source at room temperature, using doses up to 1 kGy, and the response was analyzed by UV-Vis spectroscopy. The obtained results reinforce the previously proposed mechanism and suggest that the effect depends on specific structural characteristics of the main chain of the polymers. Moreover, the polymerized dyes display interesting dosimetric properties. Additionally, it has been noted that, contrary to what happens in other solvents, MEH-PPV is degraded in bromoform solution. Protective effects have also been observed for bromoform+toluene mixtures (1:1 vol/vol) and solutions containing molecular dyes. - See more at: http://www.eurekaselect.com/117251/article#sthash.gHFnYvJk.dpufen
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Física, Faculdade de Ciências de Bauru, Bauru, Av. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, CEP 17033360, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Física, Faculdade de Ciências de Bauru, Bauru, Av. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, CEP 17033360, SP, Brasil
dc.format.extent431-440
dc.identifierhttp://dx.doi.org/10.2174/18779468113036660026
dc.identifier.citationCurrent Physical Chemistry, v. 3, n. 4, p. 431-440, 2013.
dc.identifier.doi10.2174/18779468113036660026
dc.identifier.issn1877-9468
dc.identifier.lattes9573972583390653
dc.identifier.lattes9457018963105073
dc.identifier.lattes3512985213455032
dc.identifier.lattes2813393825587000
dc.identifier.lattes5268607684223281
dc.identifier.orcid0000-0003-0162-8273
dc.identifier.urihttp://hdl.handle.net/11449/135289
dc.language.isoeng
dc.relation.ispartofCurrent Physical Chemistry
dc.rights.accessRightsAcesso restrito
dc.sourceCurrículo Lattes
dc.subjectDosimetryen
dc.subjectDyesen
dc.subjectElectronic structureen
dc.subjectFukui indicesen
dc.subjectGamma-ray effectsen
dc.subjectHalogenated solventsen
dc.subjectInfrared spectraen
dc.subjectMEH-PPVen
dc.subjectPolymer solutionsen
dc.subjectPolymer structureen
dc.subjectPoly-CyCen
dc.subjectPPPen
dc.subjectRadiolysisen
dc.subjectStabilityen
dc.titleGamma-ray dosimetric properties of conjugated polymers in solutionen
dc.typeArtigo
unesp.author.lattes9573972583390653
unesp.author.lattes9457018963105073
unesp.author.lattes3512985213455032
unesp.author.lattes2813393825587000
unesp.author.lattes2813393825580000[1]
unesp.author.lattes5268607684223281[7]
unesp.author.orcid0000-0003-0162-8273[7]
unesp.author.orcid000-0003-4609-9002[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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Bauru - FC - Faculdade de Ciências