Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response

Detalhes bibliográficos
Autor(a) principal: Tercjak, Agnieszka
Data de Publicação: 2016
Outros Autores: Gutierrez, Junkal, Barud, Hernane S. [UNESP], Ribeiro, Sidney J.L. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.carbpol.2016.02.019
http://hdl.handle.net/11449/177826
Resumo: Three different low molecular weight nematic liquid crystals (LCs) were used to impregnate bacterial cellulose (BC) film. This simple fabrication pathway allows to obtain highly transparent BC based films. The coating of BC film with different liquid crystals changed transmittance spectra in ultraviolet-visible region and allows to design UVC and UVB shielding materials. Atomic force microscopy results confirmed that liquid crystals coated BC films maintain highly interconnected three-dimensional network characteristic of BC film and simultaneously, transversal cross-section scanning electron microscopy images indicated penetration of liquid crystals through the three-dimensional network of BC nanofibers. Investigated BC films maintain nematic liquid crystal properties being switchable photoluminiscence as a function of temperature during repeatable heating/cooling cycles. Conductive response of the liquid crystal coated BC films was proved by tunneling atomic force microscopy measurement. Moreover, liquid crystal coated BC films maintain thermal stability and mechanical properties of the BC film. Designed thermoresponsive materials possessed interesting optical and conductive properties opening a novel simple pathway of fabrication liquid crystal coated BC films with tuneable properties.
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spelling Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive responseBacterial celluloseConductive propertiesNematic liquid crystalsPhotoluminescence propertiesUV shieldingThree different low molecular weight nematic liquid crystals (LCs) were used to impregnate bacterial cellulose (BC) film. This simple fabrication pathway allows to obtain highly transparent BC based films. The coating of BC film with different liquid crystals changed transmittance spectra in ultraviolet-visible region and allows to design UVC and UVB shielding materials. Atomic force microscopy results confirmed that liquid crystals coated BC films maintain highly interconnected three-dimensional network characteristic of BC film and simultaneously, transversal cross-section scanning electron microscopy images indicated penetration of liquid crystals through the three-dimensional network of BC nanofibers. Investigated BC films maintain nematic liquid crystal properties being switchable photoluminiscence as a function of temperature during repeatable heating/cooling cycles. Conductive response of the liquid crystal coated BC films was proved by tunneling atomic force microscopy measurement. Moreover, liquid crystal coated BC films maintain thermal stability and mechanical properties of the BC film. Designed thermoresponsive materials possessed interesting optical and conductive properties opening a novel simple pathway of fabrication liquid crystal coated BC films with tuneable properties.Group 'Materials + Technologies' (GMT) Department of Chemical and Environmental Engineering Polytechnic School University of the Basque Country (UPV/EHU), Plaza Europa 1Laboratory of Photonic Materials Institute of Chemistry São Paulo State University - UNESPLaboratório de Química Medicinal e Medicina Regenerativa (QUIMMERA) Centro Universitário de AraraquaraLaboratory of Photonic Materials Institute of Chemistry São Paulo State University - UNESPUniversity of the Basque Country (UPV/EHU)Universidade Estadual Paulista (Unesp)Centro Universitário de AraraquaraTercjak, AgnieszkaGutierrez, JunkalBarud, Hernane S. [UNESP]Ribeiro, Sidney J.L. [UNESP]2018-12-11T17:27:20Z2018-12-11T17:27:20Z2016-06-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article188-197application/pdfhttp://dx.doi.org/10.1016/j.carbpol.2016.02.019Carbohydrate Polymers, v. 143, p. 188-197.0144-8617http://hdl.handle.net/11449/17782610.1016/j.carbpol.2016.02.0192-s2.0-849587875432-s2.0-84958787543.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCarbohydrate Polymers1,428info:eu-repo/semantics/openAccess2023-12-12T06:24:24Zoai:repositorio.unesp.br:11449/177826Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:11:24.903309Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
title Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
spellingShingle Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
Tercjak, Agnieszka
Bacterial cellulose
Conductive properties
Nematic liquid crystals
Photoluminescence properties
UV shielding
title_short Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
title_full Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
title_fullStr Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
title_full_unstemmed Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
title_sort Switchable photoluminescence liquid crystal coated bacterial cellulose films with conductive response
author Tercjak, Agnieszka
author_facet Tercjak, Agnieszka
Gutierrez, Junkal
Barud, Hernane S. [UNESP]
Ribeiro, Sidney J.L. [UNESP]
author_role author
author2 Gutierrez, Junkal
Barud, Hernane S. [UNESP]
Ribeiro, Sidney J.L. [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv University of the Basque Country (UPV/EHU)
Universidade Estadual Paulista (Unesp)
Centro Universitário de Araraquara
dc.contributor.author.fl_str_mv Tercjak, Agnieszka
Gutierrez, Junkal
Barud, Hernane S. [UNESP]
Ribeiro, Sidney J.L. [UNESP]
dc.subject.por.fl_str_mv Bacterial cellulose
Conductive properties
Nematic liquid crystals
Photoluminescence properties
UV shielding
topic Bacterial cellulose
Conductive properties
Nematic liquid crystals
Photoluminescence properties
UV shielding
description Three different low molecular weight nematic liquid crystals (LCs) were used to impregnate bacterial cellulose (BC) film. This simple fabrication pathway allows to obtain highly transparent BC based films. The coating of BC film with different liquid crystals changed transmittance spectra in ultraviolet-visible region and allows to design UVC and UVB shielding materials. Atomic force microscopy results confirmed that liquid crystals coated BC films maintain highly interconnected three-dimensional network characteristic of BC film and simultaneously, transversal cross-section scanning electron microscopy images indicated penetration of liquid crystals through the three-dimensional network of BC nanofibers. Investigated BC films maintain nematic liquid crystal properties being switchable photoluminiscence as a function of temperature during repeatable heating/cooling cycles. Conductive response of the liquid crystal coated BC films was proved by tunneling atomic force microscopy measurement. Moreover, liquid crystal coated BC films maintain thermal stability and mechanical properties of the BC film. Designed thermoresponsive materials possessed interesting optical and conductive properties opening a novel simple pathway of fabrication liquid crystal coated BC films with tuneable properties.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-05
2018-12-11T17:27:20Z
2018-12-11T17:27:20Z
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://dx.doi.org/10.1016/j.carbpol.2016.02.019
Carbohydrate Polymers, v. 143, p. 188-197.
0144-8617
http://hdl.handle.net/11449/177826
10.1016/j.carbpol.2016.02.019
2-s2.0-84958787543
2-s2.0-84958787543.pdf
url http://dx.doi.org/10.1016/j.carbpol.2016.02.019
http://hdl.handle.net/11449/177826
identifier_str_mv Carbohydrate Polymers, v. 143, p. 188-197.
0144-8617
10.1016/j.carbpol.2016.02.019
2-s2.0-84958787543
2-s2.0-84958787543.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Carbohydrate Polymers
1,428
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 188-197
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129169612079104

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