EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV

Detalhes bibliográficos
Autor(a) principal: Barra,Alvaro C. C.
Data de Publicação: 2019
Outros Autores: Amaral,Thaeny C., Izumi,Celly M. S.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019004901098
Resumo: The present work shows the temperature dependence of the Raman spectra of two conjugated polymers: poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). In situ resonance Raman spectra of PEDOT from 77 to 423 K at 633 nm and of MEH-PPV from 77 to 473 K at 785 nm suggest that, for both polymers, as the temperature increases there is a decrease in the chain conjugation length. Raman bands of PEDOT assigned to the νsim Cα-Cβ are the most sensitive to temperature while bands due to oxyethylene rings do not show significant shifts in this temperature range. Raman and FT-IR spectra of MEH-PPV recorded above the thermal decomposition temperature provide some insights about the thermal degradation.
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spelling EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPVRaman spectroscopyMEH-PPVPEDOTin situ Raman, conducting polymerThe present work shows the temperature dependence of the Raman spectra of two conjugated polymers: poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). In situ resonance Raman spectra of PEDOT from 77 to 423 K at 633 nm and of MEH-PPV from 77 to 473 K at 785 nm suggest that, for both polymers, as the temperature increases there is a decrease in the chain conjugation length. Raman bands of PEDOT assigned to the νsim Cα-Cβ are the most sensitive to temperature while bands due to oxyethylene rings do not show significant shifts in this temperature range. Raman and FT-IR spectra of MEH-PPV recorded above the thermal decomposition temperature provide some insights about the thermal degradation.Sociedade Brasileira de Química2019-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019004901098Química Nova v.42 n.9 2019reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170425info:eu-repo/semantics/openAccessBarra,Alvaro C. C.Amaral,Thaeny C.Izumi,Celly M. S.por2019-12-09T00:00:00Zoai:scielo:S0100-40422019004901098Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2019-12-09T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
title EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
spellingShingle EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
Barra,Alvaro C. C.
Raman spectroscopy
MEH-PPV
PEDOT
in situ Raman, conducting polymer
title_short EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
title_full EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
title_fullStr EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
title_full_unstemmed EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
title_sort EFEITOS DA TEMPERATURA NOS ESPECTROS RAMAN DOS POLÍMEROS CONDUTORES PEDOT E MEH-PPV
author Barra,Alvaro C. C.
author_facet Barra,Alvaro C. C.
Amaral,Thaeny C.
Izumi,Celly M. S.
author_role author
author2 Amaral,Thaeny C.
Izumi,Celly M. S.
author2_role author
author
dc.contributor.author.fl_str_mv Barra,Alvaro C. C.
Amaral,Thaeny C.
Izumi,Celly M. S.
dc.subject.por.fl_str_mv Raman spectroscopy
MEH-PPV
PEDOT
in situ Raman, conducting polymer
topic Raman spectroscopy
MEH-PPV
PEDOT
in situ Raman, conducting polymer
description The present work shows the temperature dependence of the Raman spectra of two conjugated polymers: poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). In situ resonance Raman spectra of PEDOT from 77 to 423 K at 633 nm and of MEH-PPV from 77 to 473 K at 785 nm suggest that, for both polymers, as the temperature increases there is a decrease in the chain conjugation length. Raman bands of PEDOT assigned to the νsim Cα-Cβ are the most sensitive to temperature while bands due to oxyethylene rings do not show significant shifts in this temperature range. Raman and FT-IR spectra of MEH-PPV recorded above the thermal decomposition temperature provide some insights about the thermal degradation.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019004901098
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422019004901098
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.21577/0100-4042.20170425
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.42 n.9 2019
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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