Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units

Detalhes bibliográficos
Autor(a) principal: Airinei,Anton
Data de Publicação: 2010
Outros Autores: Rusu,Elena, Barboiu,Virgil
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000300014
Resumo: Polymer matrices with aromatic main chain and side chain linked units (polystyrene, polysulfone) were employed to construct thin films containing maleimidoazobenzene molecules in order to develop new materials with responsive properties. The photochromic behavior of the active compound was studied both in the solid and solution state for comparison. The thermal cis-trans isomerization of azobenzene chromophores in polymer films follows two different kinetic pathways. A double-exponential relaxation process (fast and slow) took place in polystyrene matrix under 70 ºC while the thermal isomerization at 70 ºC and higher follows a first-order kinetics. The cis isomer content corresponding to the photostationary state was found to be lower in polymer films than in solution.
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spelling Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked unitsazobenzenephotoisomerizationUV-Vis spectroscopythin polymer filmPolymer matrices with aromatic main chain and side chain linked units (polystyrene, polysulfone) were employed to construct thin films containing maleimidoazobenzene molecules in order to develop new materials with responsive properties. The photochromic behavior of the active compound was studied both in the solid and solution state for comparison. The thermal cis-trans isomerization of azobenzene chromophores in polymer films follows two different kinetic pathways. A double-exponential relaxation process (fast and slow) took place in polystyrene matrix under 70 ºC while the thermal isomerization at 70 ºC and higher follows a first-order kinetics. The cis isomer content corresponding to the photostationary state was found to be lower in polymer films than in solution.Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000300014Journal of the Brazilian Chemical Society v.21 n.3 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000300014info:eu-repo/semantics/openAccessAirinei,AntonRusu,ElenaBarboiu,Virgileng2010-04-30T00:00:00Zoai:scielo:S0103-50532010000300014Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-04-30T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
title Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
spellingShingle Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
Airinei,Anton
azobenzene
photoisomerization
UV-Vis spectroscopy
thin polymer film
title_short Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
title_full Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
title_fullStr Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
title_full_unstemmed Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
title_sort Responsive behavior of 4-(N-maleimido)azobenzene in polymers with aromatic main chain and side chain linked units
author Airinei,Anton
author_facet Airinei,Anton
Rusu,Elena
Barboiu,Virgil
author_role author
author2 Rusu,Elena
Barboiu,Virgil
author2_role author
author
dc.contributor.author.fl_str_mv Airinei,Anton
Rusu,Elena
Barboiu,Virgil
dc.subject.por.fl_str_mv azobenzene
photoisomerization
UV-Vis spectroscopy
thin polymer film
topic azobenzene
photoisomerization
UV-Vis spectroscopy
thin polymer film
description Polymer matrices with aromatic main chain and side chain linked units (polystyrene, polysulfone) were employed to construct thin films containing maleimidoazobenzene molecules in order to develop new materials with responsive properties. The photochromic behavior of the active compound was studied both in the solid and solution state for comparison. The thermal cis-trans isomerization of azobenzene chromophores in polymer films follows two different kinetic pathways. A double-exponential relaxation process (fast and slow) took place in polystyrene matrix under 70 ºC while the thermal isomerization at 70 ºC and higher follows a first-order kinetics. The cis isomer content corresponding to the photostationary state was found to be lower in polymer films than in solution.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0103-50532010000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532010000300014
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 Journal of the Brazilian Chemical Society v.21 n.3 2010
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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