The influence of preparation method of OC1OC6-PPV films on the photo-oxidation process.

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dc.contributor.authorOlivati, Clarissa de Almeida
dc.contributor.authorFerreira, Marystela
dc.contributor.authorBianchi, Rodrigo Fernando
dc.contributor.authorFaria, Roberto Mendonça
dc.contributor.authorOliveira Junior, Osvaldo Novais de
dc.contributor.authorBalogh, Débora Terezia
dc.date.accessioned2015-02-24T18:28:56Z
dc.date.available2015-02-24T18:28:56Z
dc.date.issued2006
dc.description.abstractPoly( p-phenylene vinylene) (PPV) derivatives are well known for their applications in polymer light emitting diodes (PLEDs). PPV derivatives are highly susceptible to photo-oxidation though, which is mainly caused by the scission of the vinyl double bond on the polymer backbone. In this work, we show that LangmuireBlodgett (LB) films are less degraded than cast films of a PPV derivative (OC1OC6-PPV). Both films had similar thickness (w50 nm) to allow for a more realistic comparison. Degradation was monitored with UVevis and FTIR spectroscopies. The results indicated that cast films were completely degraded in ca. 400 min, while LB took longer time, i.e. about four times the values for the cast films. The differences can be attributed to the more compact morphology in the LB than in the cast films. With a compact morphology the diffusion of oxygen in the LB film is hampered and this causes a delay in the degradation process.pt_BR
dc.identifier.citationOLIVATI, C. de A. The influence of preparation method of OC1OC6-PPV films on the photo-oxidation process. Polymer Degradation and Stability, v. 91, p. 2342-2346, 2006. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0141391006001200>. Acesso em: 23 fev. 2015.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.polymdegradstab.2006.04.008
dc.identifier.issn0141-3910
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/4470
dc.language.isoen_USpt_BR
dc.rights.licenseO periódico Polymer Degradation and Stability concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3565381133097.pt_BR
dc.subjectDerivativept_BR
dc.subjectPhotodegradationpt_BR
dc.subjectLangmuire blodgett filmspt_BR
dc.subjectCast filmspt_BR
dc.titleThe influence of preparation method of OC1OC6-PPV films on the photo-oxidation process.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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