Polymeric near infrared emitters with bay-annulated indigo moieties

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Ana Clara B.
Data de Publicação: 2021
Outros Autores: Eckert, Anika, Pina, João, Scherf, Ullrich, Seixas de Melo, J. Sérgio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/100803
https://doi.org/10.1039/D1MA00260K
Resumo: Three new copolymers based on bay-annulated indigo (BAI) building blocks were synthesized through Stille-type cross-coupling reactions, alternating the electron-deficient BAI units with thiophene-based donor moieties. These polymers showed absorption and fluorescence emission in the NIR region. Their spatial structures were found to prevent aggregation-caused quenching (ACQ) in the solid state. Photoluminescence at 77 K is found ca. four times more intense than at 293 K. Based on time-resolved photoluminescence experiments, the excited-state energy transfer hopping deactivation in the copolymers is discussed in terms of a Förster-type mechanism, with time constants ranging from 1010 to 1011 s-1.
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spelling Polymeric near infrared emitters with bay-annulated indigo moietiesThree new copolymers based on bay-annulated indigo (BAI) building blocks were synthesized through Stille-type cross-coupling reactions, alternating the electron-deficient BAI units with thiophene-based donor moieties. These polymers showed absorption and fluorescence emission in the NIR region. Their spatial structures were found to prevent aggregation-caused quenching (ACQ) in the solid state. Photoluminescence at 77 K is found ca. four times more intense than at 293 K. Based on time-resolved photoluminescence experiments, the excited-state energy transfer hopping deactivation in the copolymers is discussed in terms of a Förster-type mechanism, with time constants ranging from 1010 to 1011 s-1.2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/100803http://hdl.handle.net/10316/100803https://doi.org/10.1039/D1MA00260Keng2633-5409Rodrigues, Ana Clara B.Eckert, AnikaPina, JoãoScherf, UllrichSeixas de Melo, J. Sérgioinfo: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:RCAAP2022-07-12T20:31:39Zoai:estudogeral.uc.pt:10316/100803Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:18:06.872499Repositório 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 Polymeric near infrared emitters with bay-annulated indigo moieties
title Polymeric near infrared emitters with bay-annulated indigo moieties
spellingShingle Polymeric near infrared emitters with bay-annulated indigo moieties
Rodrigues, Ana Clara B.
title_short Polymeric near infrared emitters with bay-annulated indigo moieties
title_full Polymeric near infrared emitters with bay-annulated indigo moieties
title_fullStr Polymeric near infrared emitters with bay-annulated indigo moieties
title_full_unstemmed Polymeric near infrared emitters with bay-annulated indigo moieties
title_sort Polymeric near infrared emitters with bay-annulated indigo moieties
author Rodrigues, Ana Clara B.
author_facet Rodrigues, Ana Clara B.
Eckert, Anika
Pina, João
Scherf, Ullrich
Seixas de Melo, J. Sérgio
author_role author
author2 Eckert, Anika
Pina, João
Scherf, Ullrich
Seixas de Melo, J. Sérgio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Rodrigues, Ana Clara B.
Eckert, Anika
Pina, João
Scherf, Ullrich
Seixas de Melo, J. Sérgio
description Three new copolymers based on bay-annulated indigo (BAI) building blocks were synthesized through Stille-type cross-coupling reactions, alternating the electron-deficient BAI units with thiophene-based donor moieties. These polymers showed absorption and fluorescence emission in the NIR region. Their spatial structures were found to prevent aggregation-caused quenching (ACQ) in the solid state. Photoluminescence at 77 K is found ca. four times more intense than at 293 K. Based on time-resolved photoluminescence experiments, the excited-state energy transfer hopping deactivation in the copolymers is discussed in terms of a Förster-type mechanism, with time constants ranging from 1010 to 1011 s-1.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/10316/100803
http://hdl.handle.net/10316/100803
https://doi.org/10.1039/D1MA00260K
url http://hdl.handle.net/10316/100803
https://doi.org/10.1039/D1MA00260K
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2633-5409
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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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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