Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/21921 |
Resumo: | Dedicated to the Centenary of the Portuguese Chemical Society |
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Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systemsPhotochromismHeterocyclic azo dyesBenzothiazolePyrroleThiophenePhotoswitchingUV/vis spectroscopyScience & TechnologyDedicated to the Centenary of the Portuguese Chemical SocietyVisible light promotes the conversion of the E-isomer of benzothiazol-2-yl and benzothiazol-6-yl diazenes to the thermal unstable Z-isomer that reverts in few seconds to the initial form. The kinetics of the thermal Z / E process is strongly influenced by the linkage position of the N]N function to the benzothiazole heterocycle. Thienylpyrrole azo dyes functionalized with benzothiazol-6-yl groups are particularly interesting since they show an excellent compromise between the switching speed (rate constants: 0.068-0.12 s-1) and the amplitude of the absorbance variation (37-42%).Fundação para a Ciência e a Tecnologia (FCT)ElsevierUniversidade do MinhoCoelho, Paulo J.Castro, M. Cidália R.Fonseca, A. Maurício C.Raposo, M. Manuela M.20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/21921eng0143-720810.1016/j.dyepig.2011.06.019info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:04:43Zoai:repositorium.sdum.uminho.pt:1822/21921Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:55:02.009863Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
title |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
spellingShingle |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems Coelho, Paulo J. Photochromism Heterocyclic azo dyes Benzothiazole Pyrrole Thiophene Photoswitching UV/vis spectroscopy Science & Technology |
title_short |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
title_full |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
title_fullStr |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
title_full_unstemmed |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
title_sort |
Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems |
author |
Coelho, Paulo J. |
author_facet |
Coelho, Paulo J. Castro, M. Cidália R. Fonseca, A. Maurício C. Raposo, M. Manuela M. |
author_role |
author |
author2 |
Castro, M. Cidália R. Fonseca, A. Maurício C. Raposo, M. Manuela M. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Coelho, Paulo J. Castro, M. Cidália R. Fonseca, A. Maurício C. Raposo, M. Manuela M. |
dc.subject.por.fl_str_mv |
Photochromism Heterocyclic azo dyes Benzothiazole Pyrrole Thiophene Photoswitching UV/vis spectroscopy Science & Technology |
topic |
Photochromism Heterocyclic azo dyes Benzothiazole Pyrrole Thiophene Photoswitching UV/vis spectroscopy Science & Technology |
description |
Dedicated to the Centenary of the Portuguese Chemical Society |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2012-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/21921 |
url |
http://hdl.handle.net/1822/21921 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0143-7208 10.1016/j.dyepig.2011.06.019 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132334272806912 |