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Temperature dependence of photoinduced birefringence in polystyrene doped with Disperse Red-1

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dc.contributor.authorDall'Agnol, F.
dc.contributor.authorSilva, JR
dc.contributor.authorZilio, S. C.
dc.contributor.authorOliveira, O. N.
dc.contributor.authorGiacometti, J. A.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:21:29Z
dc.date.available2014-05-20T15:21:29Z
dc.date.issued2002-11-25
dc.description.abstractA theoretical model on the basis of the free-volume concept is presented explaining the temperature dependence of photoinduced birefringence in polystyrene films that contain Disperse Red-1. Birefringence increases with temperature up to 180 K as the free volume for isomerization increases, and then decreases as thermally activated processes dominate. The fast process of birefringence decay has a time constant that increases with temperature at low temperatures, due to the change kin photoisomerization.en
dc.description.affiliationUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent948-951
dc.identifierhttp://dx.doi.org/10.1002/1521-3927(200211)23:16<948
dc.identifier.citationMacromolecular Rapid Communications. Weinheim: Wiley-v C H Verlag Gmbh, v. 23, n. 16, p. 948-951, 2002.
dc.identifier.doi10.1002/1521-3927(200211)23:16<948
dc.identifier.issn1022-1336
dc.identifier.urihttp://hdl.handle.net/11449/32614
dc.identifier.wosWOS:000180055500002
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofMacromolecular Rapid Communications
dc.relation.ispartofjcr4.441
dc.relation.ispartofsjr1,452
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectDisperse Red-1pt
dc.subjectfree volumept
dc.subjectisomer/isomerizationpt
dc.subjectphotoinduced birefringencept
dc.subjectpolystyrenept
dc.titleTemperature dependence of photoinduced birefringence in polystyrene doped with Disperse Red-1en
dc.typeArtigopt
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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Presidente Prudente - FCT - Faculdade de Ciências e Tecnologia