Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan

Detalhes bibliográficos
Autor(a) principal: Alves, Raquel Diana Carneiro
Data de Publicação: 2015
Outros Autores: Ravaro, Leandro P., Pawlicka, Agnieszka, Silva, Maria Manuela, Camargo, Andrea S. S. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/39769
Resumo: Biopolymer-based materials have been of particular interest as alternatives do synthetic polymers due to their low toxicity, biodegradability and biocompatibility. Among them, chitosan is one of the most studied ones and has recently been investigated for the application as solid state polymer electrolytes. Furthermore, it can serve as a host for luminescent species such as rare earth ions, giving rise to materials with increased functionality, of particular interest for electrochemical devices. In this study, we investigate chitosan based luminescent materials doped wit Eu3+ and Li+ triflate salts from the structural, photophysical and conductivity points of view. Because the host presents a broad emission band in the blue to green, while Eu3+ emits in the red, fine tuning of emission colour and/or generation of white light is possible by optimizing composition and excitation scheme. Europium lifetimes (5D0) are in the range 270 – 350 µs and quantum yields are as high as 2%. Although Li+ does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be further explored in multifunctional device.
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spelling Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosanChitosanpolymer electrolyteeuropiumlithiumelectroluminescent devicesCiências Naturais::Ciências QuímicasScience & TechnologyBiopolymer-based materials have been of particular interest as alternatives do synthetic polymers due to their low toxicity, biodegradability and biocompatibility. Among them, chitosan is one of the most studied ones and has recently been investigated for the application as solid state polymer electrolytes. Furthermore, it can serve as a host for luminescent species such as rare earth ions, giving rise to materials with increased functionality, of particular interest for electrochemical devices. In this study, we investigate chitosan based luminescent materials doped wit Eu3+ and Li+ triflate salts from the structural, photophysical and conductivity points of view. Because the host presents a broad emission band in the blue to green, while Eu3+ emits in the red, fine tuning of emission colour and/or generation of white light is possible by optimizing composition and excitation scheme. Europium lifetimes (5D0) are in the range 270 – 350 µs and quantum yields are as high as 2%. Although Li+ does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be further explored in multifunctional device.We are grateful to the Fundação para a Ciência e Tecnologia and FEDER (PEstC/QUI/UI0686/2013) and program POPH/FSE, grant SFRH/BD/97232/2013 (R. Alves), for financial support of this work. The authors are also grateful to FAPESP (CEPID 2013/07793-6 and PD fellowship 2013/24727-7), and CNPQ (Universal Project 479672/2012-1) and CAPES for the financial support. M. M. Silva acknowledges CNPq (PVE grant 406617/2013-9), for the mobility grant provided by this institution. The help from Dr. Reza Dousti in measuring quantum yields is greatly appreciated.Sociedade Brasileira de QuímicaUniversidade do MinhoAlves, Raquel Diana CarneiroRavaro, Leandro P.Pawlicka, AgnieszkaSilva, Maria ManuelaCamargo, Andrea S. S. de20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/39769engJ. Braz. Chem. Soc. vol.26 no.12 São Paulo Dec. 20150103 - 505310.5935/0103-5053.20150267http://dx.doi.org/10.5935/0103-5053.20150267info: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:RCAAP2023-07-21T12:02:23Zoai:repositorium.sdum.uminho.pt:1822/39769Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:52:21.468202Repositório 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 Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
title Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
spellingShingle Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
Alves, Raquel Diana Carneiro
Chitosan
polymer electrolyte
europium
lithium
electroluminescent devices
Ciências Naturais::Ciências Químicas
Science & Technology
title_short Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
title_full Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
title_fullStr Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
title_full_unstemmed Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
title_sort Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
author Alves, Raquel Diana Carneiro
author_facet Alves, Raquel Diana Carneiro
Ravaro, Leandro P.
Pawlicka, Agnieszka
Silva, Maria Manuela
Camargo, Andrea S. S. de
author_role author
author2 Ravaro, Leandro P.
Pawlicka, Agnieszka
Silva, Maria Manuela
Camargo, Andrea S. S. de
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Alves, Raquel Diana Carneiro
Ravaro, Leandro P.
Pawlicka, Agnieszka
Silva, Maria Manuela
Camargo, Andrea S. S. de
dc.subject.por.fl_str_mv Chitosan
polymer electrolyte
europium
lithium
electroluminescent devices
Ciências Naturais::Ciências Químicas
Science & Technology
topic Chitosan
polymer electrolyte
europium
lithium
electroluminescent devices
Ciências Naturais::Ciências Químicas
Science & Technology
description Biopolymer-based materials have been of particular interest as alternatives do synthetic polymers due to their low toxicity, biodegradability and biocompatibility. Among them, chitosan is one of the most studied ones and has recently been investigated for the application as solid state polymer electrolytes. Furthermore, it can serve as a host for luminescent species such as rare earth ions, giving rise to materials with increased functionality, of particular interest for electrochemical devices. In this study, we investigate chitosan based luminescent materials doped wit Eu3+ and Li+ triflate salts from the structural, photophysical and conductivity points of view. Because the host presents a broad emission band in the blue to green, while Eu3+ emits in the red, fine tuning of emission colour and/or generation of white light is possible by optimizing composition and excitation scheme. Europium lifetimes (5D0) are in the range 270 – 350 µs and quantum yields are as high as 2%. Although Li+ does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be further explored in multifunctional device.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
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/1822/39769
url http://hdl.handle.net/1822/39769
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv J. Braz. Chem. Soc. vol.26 no.12 São Paulo Dec. 2015
0103 - 5053
10.5935/0103-5053.20150267
http://dx.doi.org/10.5935/0103-5053.20150267
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
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
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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