Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials

Detalhes bibliográficos
Autor(a) principal: Garcia-Amorós, J.
Data de Publicação: 2016
Outros Autores: Castro, M. C. R., Coelho, P., Raposo, M. Manuela M., Velasco, D.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/44225
Resumo: Push-pull bithienylpyrrole-based azo dyes exhibit thermal isomerisation rates as fast as 1.4 μs in acetonitrile at 298 K becoming, thus, the fastest neutral azo dyes reported so far. These remarkably low relaxation times can be transferred into liquid-crystalline matrixes enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions.
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spelling Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materialsPhotochromismAzo dyesHeterocyclesSynthesisLiquid-crystalline materialsMolecular switchesPush-pull heterocyclic systemsCiências Naturais::Ciências QuímicasScience & TechnologyPush-pull bithienylpyrrole-based azo dyes exhibit thermal isomerisation rates as fast as 1.4 μs in acetonitrile at 298 K becoming, thus, the fastest neutral azo dyes reported so far. These remarkably low relaxation times can be transferred into liquid-crystalline matrixes enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions.Financial support for this research was obtained from the Ministerio de Economía y Competitividad (Spain, CTQ2012-36074 and CTQ2015-65770-P). The authors thank Prof. Santi Nonell for his help with the flash photolysis measurements. Thanks are also due to: Fundação para a Ciência e Tecnologia (FCT) for a PhD grant to M. C. R. Castro (SFRH/BD/78037/2011); FEDERCOMPETE for financial support through the Centro de Quı ´mica – UM, PEst-C/QUI/UI0686/2013 (FCOMP-01-0124-FEDER-037302). The NMR spectrometer Bruker Avance III 400 is part of the National NMR Network and was purchased within the framework of the National Program for Scientific Re-equipment, contract REDE/1517/RMN/2005 with funds from POCI 2010 (FEDER) and FCT.Royal Society of ChemistryUniversidade do MinhoGarcia-Amorós, J.Castro, M. C. R.Coelho, P.Raposo, M. Manuela M.Velasco, D.20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/1822/44225engGarcia-Amoros, J., Castro, M. C. R., Coelho, P., Raposo, M. M. M., & Velasco, D. (2016). Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials. Chemical Communications, 52(29), 5132-5135. doi: 10.1039/c6cc00403b1359-734510.1039/C6CC00403Bhttp://dx.doi.org/10.1039/C6CC00403Binfo: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:RCAAP2023-07-21T12:09:13Zoai:repositorium.sdum.uminho.pt:1822/44225Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:00:35.221234Repositório 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 Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
title Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
spellingShingle Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
Garcia-Amorós, J.
Photochromism
Azo dyes
Heterocycles
Synthesis
Liquid-crystalline materials
Molecular switches
Push-pull heterocyclic systems
Ciências Naturais::Ciências Químicas
Science & Technology
title_short Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
title_full Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
title_fullStr Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
title_full_unstemmed Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
title_sort Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
author Garcia-Amorós, J.
author_facet Garcia-Amorós, J.
Castro, M. C. R.
Coelho, P.
Raposo, M. Manuela M.
Velasco, D.
author_role author
author2 Castro, M. C. R.
Coelho, P.
Raposo, M. Manuela M.
Velasco, D.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Garcia-Amorós, J.
Castro, M. C. R.
Coelho, P.
Raposo, M. Manuela M.
Velasco, D.
dc.subject.por.fl_str_mv Photochromism
Azo dyes
Heterocycles
Synthesis
Liquid-crystalline materials
Molecular switches
Push-pull heterocyclic systems
Ciências Naturais::Ciências Químicas
Science & Technology
topic Photochromism
Azo dyes
Heterocycles
Synthesis
Liquid-crystalline materials
Molecular switches
Push-pull heterocyclic systems
Ciências Naturais::Ciências Químicas
Science & Technology
description Push-pull bithienylpyrrole-based azo dyes exhibit thermal isomerisation rates as fast as 1.4 μs in acetonitrile at 298 K becoming, thus, the fastest neutral azo dyes reported so far. These remarkably low relaxation times can be transferred into liquid-crystalline matrixes enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-01-01T00:00:00Z
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/1822/44225
url http://hdl.handle.net/1822/44225
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Garcia-Amoros, J., Castro, M. C. R., Coelho, P., Raposo, M. M. M., & Velasco, D. (2016). Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials. Chemical Communications, 52(29), 5132-5135. doi: 10.1039/c6cc00403b
1359-7345
10.1039/C6CC00403B
http://dx.doi.org/10.1039/C6CC00403B
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str 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
repository.mail.fl_str_mv
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