Optical birefringence induced by two-photon absorption in polythiophene bearing an azochromophore

dc.creatorCORREA, D. S.
dc.creatorCARDOSO, M. R.
dc.creatorGONCALVES, V. C.
dc.creatorBALOGH, Debora Terezia
dc.creatorBONI, Leonardo De
dc.creatorMENDONCA, Cleber Renato
dc.date.accessioned2012-10-20T04:16:57Z
dc.date.accessioned2018-07-04T15:42:32Z
dc.date.available2012-10-20T04:16:57Z
dc.date.available2018-07-04T15:42:32Z
dc.date.created2012-10-20T04:16:57Z
dc.date.issued2008
dc.identifierPOLYMER, v.49, n.6, p.1562-1566, 2008
dc.identifier0032-3861
dc.identifierhttp://producao.usp.br/handle/BDPI/29798
dc.identifier10.1016/j.polymer.2008.01.054
dc.identifierhttp://dx.doi.org/10.1016/j.polymer.2008.01.054
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1626438
dc.description.abstractWe carried out experiments of induced birefringence via two-photon absorption in spin-coated films of the conjugated polymer poly[2-[ethyl-[4-(4-nitro-phenylazo)-phenyl] -amino]-ethane (3-thienyl)ethanoate], PAzT, at 680 and 775 nm. This process allows recording in the bulk because of the spatial confinement of the bireffingence provided by the two-photon absorption. The induced birefringence is associated with molecular reorientation caused by the two-photon induced isomerization of the azochromophores attached to the polymer backbone. In addition, the two-photon absorption spectrum of PAzT was measured to help selecting the excitation wavelength for two-photon absorption induced birefringence. (c) 2008 Elsevier Ltd. All rights reserved.
dc.languageeng
dc.publisherELSEVIER SCI LTD
dc.relationPolymer
dc.rightsCopyright ELSEVIER SCI LTD
dc.rightsrestrictedAccess
dc.subjectbirefringence
dc.subjecttrans-cis isomerization
dc.subjecttwo-photon absorption
dc.titleOptical birefringence induced by two-photon absorption in polythiophene bearing an azochromophore
dc.typeArtículos de revistas


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