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: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015001202590 |
Resumo: | Biopolymer-based materials have been of particular interest as alternatives to 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, opening up the possibility of combined electro-optical functionality, of particular interest for electroluminescent devices. In this study, we perform a fundamental, initial, investigation of chitosan based luminescent materials doped with EuIII and LiI triflate salts, from the structural, photophysical and conducting points of view. Because the host presents a broad emission band in the blue to green, while EuIII emits in the red, fine-tuning of emission colour and/or generation of white light is proven possible, by proper combination of optimized composition and excitation scheme. Europium lifetimes (5D0) are in the range 270-350 µs and quantum yields are up to 2%. Although LiI does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be useful in the development of electro-luminescent devices. |
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Eco-Friendly Luminescent Hybrid Materials Based on EuIII and LiI Co-Doped Chitosanchitosanpolymer electrolyteeuropiumlithiumelectroluminescent devicesBiopolymer-based materials have been of particular interest as alternatives to 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, opening up the possibility of combined electro-optical functionality, of particular interest for electroluminescent devices. In this study, we perform a fundamental, initial, investigation of chitosan based luminescent materials doped with EuIII and LiI triflate salts, from the structural, photophysical and conducting points of view. Because the host presents a broad emission band in the blue to green, while EuIII emits in the red, fine-tuning of emission colour and/or generation of white light is proven possible, by proper combination of optimized composition and excitation scheme. Europium lifetimes (5D0) are in the range 270-350 µs and quantum yields are up to 2%. Although LiI does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be useful in the development of electro-luminescent devices.Sociedade Brasileira de Química2015-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015001202590Journal of the Brazilian Chemical Society v.26 n.12 2015reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20150267info:eu-repo/semantics/openAccessAlves,RaquelRavaro,Leandro P.Pawlicka,AgnieszkaSilva,Maria ManuelaCamargo,Andrea S. S. deeng2015-12-16T00:00:00Zoai:scielo:S0103-50532015001202590Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2015-12-16T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
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 chitosan polymer electrolyte europium lithium electroluminescent devices |
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 |
author_facet |
Alves,Raquel 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.author.fl_str_mv |
Alves,Raquel 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 |
topic |
chitosan polymer electrolyte europium lithium electroluminescent devices |
description |
Biopolymer-based materials have been of particular interest as alternatives to 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, opening up the possibility of combined electro-optical functionality, of particular interest for electroluminescent devices. In this study, we perform a fundamental, initial, investigation of chitosan based luminescent materials doped with EuIII and LiI triflate salts, from the structural, photophysical and conducting points of view. Because the host presents a broad emission band in the blue to green, while EuIII emits in the red, fine-tuning of emission colour and/or generation of white light is proven possible, by proper combination of optimized composition and excitation scheme. Europium lifetimes (5D0) are in the range 270-350 µs and quantum yields are up to 2%. Although LiI does not interfere with the luminescent properties, it grants ion-conducting properties to the material suggesting that a combination of both properties could be useful in the development of electro-luminescent devices. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015001202590 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532015001202590 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
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 |
text/html |
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 |
Journal of the Brazilian Chemical Society v.26 n.12 2015 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318177877753856 |