Evaluation of the photocurrent value for poly(2,5-dicyano-p-phenylene-vinylene)-co-(p-phenylene-vinylene) (DCN-PPV/PPV)

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dc.contributor.authordos Santos, Fabio Santana
dc.contributor.authorBertuzzi, Diego L.
dc.contributor.authorPedroso, Alex V.
dc.contributor.authorVoinarovicz, Marco A.
dc.contributor.authorKlider, Karine C. C. W. dos S.
dc.contributor.authorPeres, Laura O. [UNIFESP]
dc.contributor.authorGarcia, Jarem R.
dc.date.accessioned2019-07-22T15:46:50Z
dc.date.available2019-07-22T15:46:50Z
dc.date.issued2016
dc.description.abstractA method to obtain poly(2,5-dicyano-p-phenylene-vinylene)-co-(p-phenylene-vinylene) (DCN-PPV/PPV) block copolymer was developed. The structural characteristics of the copolymer and its capability to generate a photocurrent were evaluated. IR spectra indicate the complete conversion of precursor copolymer into DCN-PPV/PPV at 250 A degrees C under low-pressure conditions. The DCN-PPV/PPV polymer optical band gap was determined based on the observed UV-Vis spectral data by using Tauc's equation. The two linear regions in the Tauc curve (E-g = 2.63 eV and 2.02) revealed the formation of a block copolymer. Thermal analysis showed that DCN-PPV/PPV has a higher stability than PPV and starts to degrade at 317 A degrees C in air. The electronic parameters of DCN-PPV/PPV (IP = 5.25 eV, EA = 3.30 eV, and E-g = 1.95 eV) indicate that the cyano groups reduce the LUMO energy level without affecting the HOMO energy by much. DCN-PPV/PPV photoactivity measurements show higher photocurrent values compared to those for PPV.en
dc.description.affiliationUniv Estadual Ponta Grossa, Dept Quim, Ave Gal Carlos Cavalcanti 4748, BR-84030900 Ponta Grossa, PR, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.format.extent2551-2557
dc.identifierhttp://dx.doi.org/10.1007/s10008-016-3217-4
dc.identifier.citationJournal Of Solid State Electrochemistry. New York, v. 20, n. 9, p. 2551-2557, 2016.
dc.identifier.doi10.1007/s10008-016-3217-4
dc.identifier.issn1432-8488
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/51116
dc.identifier.wosWOS:000382130000021
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartof20th Brazilian Symposium of Electrochemistry and Electroanalysis (SIBEE)
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectPPV-type copolymeren
dc.subjectConjugated polymersen
dc.subjectCyano groupen
dc.subjectPhotocurrenten
dc.subjectPhotovoltaic devicesen
dc.titleEvaluation of the photocurrent value for poly(2,5-dicyano-p-phenylene-vinylene)-co-(p-phenylene-vinylene) (DCN-PPV/PPV)en
dc.typeinfo:eu-repo/semantics/article
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