Eco-friendly luminescent hybrid materials based on EuIII and LiI co-doped chitosan
Autor(a) principal: | |
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Data de Publicação: | 2015 |
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/1822/39769 |
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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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 |
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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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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