Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization

Detalhes bibliográficos
Autor(a) principal: Silva, Edilene Assuncao da [UNESP]
Data de Publicação: 2014
Outros Autores: Rodrigues de Oliveira, Vinicius Jesse [UNESP], Braunger, Maria Luisa [UNESP], Leopoldo Constantino, Carlos Jose [UNESP], Olivati, Clarissa de Almeida [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000600012&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/130378
Resumo: A study is reported on Langmuir and Langmuir-Blodgett (LB) films obtained by adding different percentages of stearic acid (SA) to poly(3-octylhiophene) (P3OT). Surface pressure-mean molecular area (pi-A) isotherms, ultraviolet-visible (UV-Vis) absorption spectrum, atomic force microscope (AFM) and dc electrical measurements have been used for characterization. From p-A isotherms, the area per monomer for condensed films (of SA) increased according to P3OT amount. Good transfer ratios were obtained for LB deposition from P3OT/SA films with higher percentage of SA. LB films revealed linear growth as monitored by UV-Vis absorption spectra. Electrical characterization showed higher conductivity for LB film with 54 wt.% of SA. AFM images of the same film revealed high roughness and presence of large size agglomerates. Finally, interdigitated electrodes (IDE) coated with P3OT/SA LB films showed to be sensitive to the presence of volatile organic compounds.
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spelling Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterizationLangmuirLangmuir-BlodgettPolythiophenesElectrical characterizationSensorsA study is reported on Langmuir and Langmuir-Blodgett (LB) films obtained by adding different percentages of stearic acid (SA) to poly(3-octylhiophene) (P3OT). Surface pressure-mean molecular area (pi-A) isotherms, ultraviolet-visible (UV-Vis) absorption spectrum, atomic force microscope (AFM) and dc electrical measurements have been used for characterization. From p-A isotherms, the area per monomer for condensed films (of SA) increased according to P3OT amount. Good transfer ratios were obtained for LB deposition from P3OT/SA films with higher percentage of SA. LB films revealed linear growth as monitored by UV-Vis absorption spectra. Electrical characterization showed higher conductivity for LB film with 54 wt.% of SA. AFM images of the same film revealed high roughness and presence of large size agglomerates. Finally, interdigitated electrodes (IDE) coated with P3OT/SA LB films showed to be sensitive to the presence of volatile organic compounds.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)INEOLNLS (Brazil)Univ Estadual Paulista, Fac Ciencias &Tecnol, BR-19060900 Presidente Prudente, SP, BrazilUniv Estadual Paulista, Fac Ciencias &Tecnol, BR-19060900 Presidente Prudente, SP, BrazilLNLS (Brazil): LMF 16557Univ Fed Sao Carlos, Dept Engenharia MaterialsUniversidade Estadual Paulista (Unesp)Silva, Edilene Assuncao da [UNESP]Rodrigues de Oliveira, Vinicius Jesse [UNESP]Braunger, Maria Luisa [UNESP]Leopoldo Constantino, Carlos Jose [UNESP]Olivati, Clarissa de Almeida [UNESP]2015-11-03T18:26:06Z2015-11-03T18:26:06Z2014-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1442-1448application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000600012&lng=en&nrm=iso&tlng=enMaterials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 6, p. 1442-1448, 2014.1516-1439http://hdl.handle.net/11449/13037810.1590/1516-1439.288814S1516-14392014000600012WOS:000349766900011S1516-14392014000600012.pdf98222128086514150000-0002-0114-6795Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research-ibero-american Journal Of Materials1.1030,398info:eu-repo/semantics/openAccess2024-01-04T06:23:08Zoai:repositorio.unesp.br:11449/130378Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-04T06:23:08Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
title Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
spellingShingle Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
Silva, Edilene Assuncao da [UNESP]
Langmuir
Langmuir-Blodgett
Polythiophenes
Electrical characterization
Sensors
title_short Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
title_full Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
title_fullStr Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
title_full_unstemmed Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
title_sort Poly(3-octylthiophene)/stearic acid langmuir and langmuir-blodgett films: preparation and characterization
author Silva, Edilene Assuncao da [UNESP]
author_facet Silva, Edilene Assuncao da [UNESP]
Rodrigues de Oliveira, Vinicius Jesse [UNESP]
Braunger, Maria Luisa [UNESP]
Leopoldo Constantino, Carlos Jose [UNESP]
Olivati, Clarissa de Almeida [UNESP]
author_role author
author2 Rodrigues de Oliveira, Vinicius Jesse [UNESP]
Braunger, Maria Luisa [UNESP]
Leopoldo Constantino, Carlos Jose [UNESP]
Olivati, Clarissa de Almeida [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silva, Edilene Assuncao da [UNESP]
Rodrigues de Oliveira, Vinicius Jesse [UNESP]
Braunger, Maria Luisa [UNESP]
Leopoldo Constantino, Carlos Jose [UNESP]
Olivati, Clarissa de Almeida [UNESP]
dc.subject.por.fl_str_mv Langmuir
Langmuir-Blodgett
Polythiophenes
Electrical characterization
Sensors
topic Langmuir
Langmuir-Blodgett
Polythiophenes
Electrical characterization
Sensors
description A study is reported on Langmuir and Langmuir-Blodgett (LB) films obtained by adding different percentages of stearic acid (SA) to poly(3-octylhiophene) (P3OT). Surface pressure-mean molecular area (pi-A) isotherms, ultraviolet-visible (UV-Vis) absorption spectrum, atomic force microscope (AFM) and dc electrical measurements have been used for characterization. From p-A isotherms, the area per monomer for condensed films (of SA) increased according to P3OT amount. Good transfer ratios were obtained for LB deposition from P3OT/SA films with higher percentage of SA. LB films revealed linear growth as monitored by UV-Vis absorption spectra. Electrical characterization showed higher conductivity for LB film with 54 wt.% of SA. AFM images of the same film revealed high roughness and presence of large size agglomerates. Finally, interdigitated electrodes (IDE) coated with P3OT/SA LB films showed to be sensitive to the presence of volatile organic compounds.
publishDate 2014
dc.date.none.fl_str_mv 2014-11-01
2015-11-03T18:26:06Z
2015-11-03T18:26:06Z
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://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000600012&lng=en&nrm=iso&tlng=en
Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 6, p. 1442-1448, 2014.
1516-1439
http://hdl.handle.net/11449/130378
10.1590/1516-1439.288814
S1516-14392014000600012
WOS:000349766900011
S1516-14392014000600012.pdf
9822212808651415
0000-0002-0114-6795
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000600012&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/130378
identifier_str_mv Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 6, p. 1442-1448, 2014.
1516-1439
10.1590/1516-1439.288814
S1516-14392014000600012
WOS:000349766900011
S1516-14392014000600012.pdf
9822212808651415
0000-0002-0114-6795
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research-ibero-american Journal Of Materials
1.103
0,398
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1442-1448
application/pdf
dc.publisher.none.fl_str_mv Univ Fed Sao Carlos, Dept Engenharia Materials
publisher.none.fl_str_mv Univ Fed Sao Carlos, Dept Engenharia Materials
dc.source.none.fl_str_mv Web of Science
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
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