Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces

Autores
Cámara, Candelaria Inés; Colqui Quiroga, Mónica Vanesa; Wilke, Natalia; Jimenez Kairuz, Alvaro Federico; Yudi, Lidia Mabel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of chitosan on distearoylphosphatidylglycerol (DSPG) films was analyzed by cyclic voltammetry, surface pressure-area and surface potential-area isotherm and Brewster Angle Microscopy. Experiments of cyclic voltammetry at a liquid/liquid interface demonstrated a blocking effect of DSPG to tetraethylammonium (TEA+) cation transfer from the aqueous to the organic phase. This effect was reversed by the presence of chitosan, which modifies the film structure. Special emphasis was placed on the nature of the supporting aqueous electrolyte (LiCl or CaCl2). In the presence of LiCl the permeability of the film increases when chitosan is present in the aqueous phase, minimizing the blocking effect of the film on TEA+ transfer probably due to the presence of bare zones at the interface. Oppositely, in presence of Ca2+, the enhancement of permeability was not observed, probably due to the impediment of chitosan to penetrate into the very tightly compacted film of DSPG. Electrochemical experiments were completed with viscosity measurements to explain the variation of diffusion coefficients for TEA+. Isotherms of compression for DSPG monolayers modified with chitosan, demonstrate that this polymer produces an expansion of the DSPG film and modifies the compression factor, for both electrolytes studied. Images of Brewster angle microscopy evidence an increase in the optical thickness of the DSPG films in presence of chitosan indicating that the polymer interacts with DSPG molecules at low and high molecular areas.
Fil: Cámara, Candelaria Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Colqui Quiroga, Mónica Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Wilke, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina
Fil: Jimenez Kairuz, Alvaro Federico. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Farmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Yudi, Lidia Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
Chitosan
Phospholipids Monolayers
Liquid/Liquid Interfaces
Air/Water Interfaces
Cyclic Voltammmetry
Langmuir Isotherms
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/22775
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/22775
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfacesCámara, Candelaria InésColqui Quiroga, Mónica VanesaWilke, NataliaJimenez Kairuz, Alvaro FedericoYudi, Lidia MabelChitosanPhospholipids MonolayersLiquid/Liquid InterfacesAir/Water InterfacesCyclic VoltammmetryLangmuir Isothermshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The effect of chitosan on distearoylphosphatidylglycerol (DSPG) films was analyzed by cyclic voltammetry, surface pressure-area and surface potential-area isotherm and Brewster Angle Microscopy. Experiments of cyclic voltammetry at a liquid/liquid interface demonstrated a blocking effect of DSPG to tetraethylammonium (TEA+) cation transfer from the aqueous to the organic phase. This effect was reversed by the presence of chitosan, which modifies the film structure. Special emphasis was placed on the nature of the supporting aqueous electrolyte (LiCl or CaCl2). In the presence of LiCl the permeability of the film increases when chitosan is present in the aqueous phase, minimizing the blocking effect of the film on TEA+ transfer probably due to the presence of bare zones at the interface. Oppositely, in presence of Ca2+, the enhancement of permeability was not observed, probably due to the impediment of chitosan to penetrate into the very tightly compacted film of DSPG. Electrochemical experiments were completed with viscosity measurements to explain the variation of diffusion coefficients for TEA+. Isotherms of compression for DSPG monolayers modified with chitosan, demonstrate that this polymer produces an expansion of the DSPG film and modifies the compression factor, for both electrolytes studied. Images of Brewster angle microscopy evidence an increase in the optical thickness of the DSPG films in presence of chitosan indicating that the polymer interacts with DSPG molecules at low and high molecular areas.Fil: Cámara, Candelaria Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Colqui Quiroga, Mónica Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Wilke, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; ArgentinaFil: Jimenez Kairuz, Alvaro Federico. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Farmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Yudi, Lidia Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaElsevier2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22775Cámara, Candelaria Inés; Colqui Quiroga, Mónica Vanesa; Wilke, Natalia; Jimenez Kairuz, Alvaro Federico; Yudi, Lidia Mabel; Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces; Elsevier; Electrochimica Acta; 94; 2-2013; 124-1330013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2013.01.137info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468613001849info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:41Zoai:ri.conicet.gov.ar:11336/22775instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:52:41.66CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
title Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
spellingShingle Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
Cámara, Candelaria Inés
Chitosan
Phospholipids Monolayers
Liquid/Liquid Interfaces
Air/Water Interfaces
Cyclic Voltammmetry
Langmuir Isotherms
title_short Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
title_full Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
title_fullStr Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
title_full_unstemmed Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
title_sort Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces
dc.creator.none.fl_str_mv Cámara, Candelaria Inés
Colqui Quiroga, Mónica Vanesa
Wilke, Natalia
Jimenez Kairuz, Alvaro Federico
Yudi, Lidia Mabel
author Cámara, Candelaria Inés
author_facet Cámara, Candelaria Inés
Colqui Quiroga, Mónica Vanesa
Wilke, Natalia
Jimenez Kairuz, Alvaro Federico
Yudi, Lidia Mabel
author_role author
author2 Colqui Quiroga, Mónica Vanesa
Wilke, Natalia
Jimenez Kairuz, Alvaro Federico
Yudi, Lidia Mabel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Chitosan
Phospholipids Monolayers
Liquid/Liquid Interfaces
Air/Water Interfaces
Cyclic Voltammmetry
Langmuir Isotherms
topic Chitosan
Phospholipids Monolayers
Liquid/Liquid Interfaces
Air/Water Interfaces
Cyclic Voltammmetry
Langmuir Isotherms
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The effect of chitosan on distearoylphosphatidylglycerol (DSPG) films was analyzed by cyclic voltammetry, surface pressure-area and surface potential-area isotherm and Brewster Angle Microscopy. Experiments of cyclic voltammetry at a liquid/liquid interface demonstrated a blocking effect of DSPG to tetraethylammonium (TEA+) cation transfer from the aqueous to the organic phase. This effect was reversed by the presence of chitosan, which modifies the film structure. Special emphasis was placed on the nature of the supporting aqueous electrolyte (LiCl or CaCl2). In the presence of LiCl the permeability of the film increases when chitosan is present in the aqueous phase, minimizing the blocking effect of the film on TEA+ transfer probably due to the presence of bare zones at the interface. Oppositely, in presence of Ca2+, the enhancement of permeability was not observed, probably due to the impediment of chitosan to penetrate into the very tightly compacted film of DSPG. Electrochemical experiments were completed with viscosity measurements to explain the variation of diffusion coefficients for TEA+. Isotherms of compression for DSPG monolayers modified with chitosan, demonstrate that this polymer produces an expansion of the DSPG film and modifies the compression factor, for both electrolytes studied. Images of Brewster angle microscopy evidence an increase in the optical thickness of the DSPG films in presence of chitosan indicating that the polymer interacts with DSPG molecules at low and high molecular areas.
Fil: Cámara, Candelaria Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Colqui Quiroga, Mónica Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Wilke, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina
Fil: Jimenez Kairuz, Alvaro Federico. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Farmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Yudi, Lidia Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description The effect of chitosan on distearoylphosphatidylglycerol (DSPG) films was analyzed by cyclic voltammetry, surface pressure-area and surface potential-area isotherm and Brewster Angle Microscopy. Experiments of cyclic voltammetry at a liquid/liquid interface demonstrated a blocking effect of DSPG to tetraethylammonium (TEA+) cation transfer from the aqueous to the organic phase. This effect was reversed by the presence of chitosan, which modifies the film structure. Special emphasis was placed on the nature of the supporting aqueous electrolyte (LiCl or CaCl2). In the presence of LiCl the permeability of the film increases when chitosan is present in the aqueous phase, minimizing the blocking effect of the film on TEA+ transfer probably due to the presence of bare zones at the interface. Oppositely, in presence of Ca2+, the enhancement of permeability was not observed, probably due to the impediment of chitosan to penetrate into the very tightly compacted film of DSPG. Electrochemical experiments were completed with viscosity measurements to explain the variation of diffusion coefficients for TEA+. Isotherms of compression for DSPG monolayers modified with chitosan, demonstrate that this polymer produces an expansion of the DSPG film and modifies the compression factor, for both electrolytes studied. Images of Brewster angle microscopy evidence an increase in the optical thickness of the DSPG films in presence of chitosan indicating that the polymer interacts with DSPG molecules at low and high molecular areas.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/22775
Cámara, Candelaria Inés; Colqui Quiroga, Mónica Vanesa; Wilke, Natalia; Jimenez Kairuz, Alvaro Federico; Yudi, Lidia Mabel; Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces; Elsevier; Electrochimica Acta; 94; 2-2013; 124-133
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22775
identifier_str_mv Cámara, Candelaria Inés; Colqui Quiroga, Mónica Vanesa; Wilke, Natalia; Jimenez Kairuz, Alvaro Federico; Yudi, Lidia Mabel; Effect of chitosan on distearoylphosphatidylglycerol films at air/water and liquid/liquid interfaces; Elsevier; Electrochimica Acta; 94; 2-2013; 124-133
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2013.01.137
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468613001849
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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