Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems

Bibliographic Details
Main Author: Coelho, Paulo J.
Publication Date: 2012
Other Authors: Castro, M. Cidália R., Fonseca, A. Maurício C., Raposo, M. Manuela M.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: https://hdl.handle.net/1822/21921
Summary: Dedicated to the Centenary of the Portuguese Chemical Society
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spelling 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/pdfhttps://hdl.handle.net/1822/21921eng0143-720810.1016/j.dyepig.2011.06.019info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-04-12T04:15:44Zoai:repositorium.sdum.uminho.pt:1822/21921Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T14:58:37.706068Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
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 https://hdl.handle.net/1822/21921
url https://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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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