Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration

Autores
Fernández Leyes, Marcos Daniel; Messina, Paula Verónica; Andreucetti, Noemi Amalia; Luengo, Carina Vanesa; Schulz, Pablo Carlos
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The phase behavior for the very diluted DDAB-NaDHC-water system was investigated at 25°C. Fluorescence, conductivity, and surface tension experiments were carried out to determine the cac values. Comparison between experimental and calculated values shows the suitability of the regular theory to predict the critical aggregation concentrations for the tested systems. The interaction between both amphiphiles inside aggregates is not ideal, showing a large synergism. Such fact is reflected by the activity of coefficients values. The aggregates are mainly comprised by DDAB (18-30 % mol NaDHC) regardless of the NaDHC solution molar fraction; these molecules act as a good solvent of bile salt type molecule. Nevertheless, the gradual inclusion of NaDHC molecules inside DDAB bilayers leads to structural transformations. These facts are supposed to be due the combination of two effects: (i) the reduction of head groups hydration and (ii) the increment of chain repulsion.
Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Andreucetti, Noemi Amalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Luengo, Carina Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Schulz, Pablo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Materia
Aggregate Transitions
Ddab
Nadhc
Regular Solution Theory
Vesicles
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78994
Acceder
id CONICETDig_d5348bc952212bfe0cb5333da5ad6a93
oai_identifier_str oai:ri.conicet.gov.ar:11336/78994
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentrationFernández Leyes, Marcos DanielMessina, Paula VerónicaAndreucetti, Noemi AmaliaLuengo, Carina VanesaSchulz, Pablo CarlosAggregate TransitionsDdabNadhcRegular Solution TheoryVesicleshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The phase behavior for the very diluted DDAB-NaDHC-water system was investigated at 25°C. Fluorescence, conductivity, and surface tension experiments were carried out to determine the cac values. Comparison between experimental and calculated values shows the suitability of the regular theory to predict the critical aggregation concentrations for the tested systems. The interaction between both amphiphiles inside aggregates is not ideal, showing a large synergism. Such fact is reflected by the activity of coefficients values. The aggregates are mainly comprised by DDAB (18-30 % mol NaDHC) regardless of the NaDHC solution molar fraction; these molecules act as a good solvent of bile salt type molecule. Nevertheless, the gradual inclusion of NaDHC molecules inside DDAB bilayers leads to structural transformations. These facts are supposed to be due the combination of two effects: (i) the reduction of head groups hydration and (ii) the increment of chain repulsion.Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Andreucetti, Noemi Amalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Luengo, Carina Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Schulz, Pablo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaTaylor & Francis2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78994Fernández Leyes, Marcos Daniel; Messina, Paula Verónica; Andreucetti, Noemi Amalia; Luengo, Carina Vanesa; Schulz, Pablo Carlos; Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration; Taylor & Francis; Soft Materials; 11; 2; 4-2013; 204-2141539-445XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/1539445X.2012.617642info:eu-repo/semantics/altIdentifier/doi/10.1080/1539445X.2012.617642info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:51Zoai:ri.conicet.gov.ar:11336/78994instacron: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:34982025-09-29 10:20:51.712CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
title Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
spellingShingle Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
Fernández Leyes, Marcos Daniel
Aggregate Transitions
Ddab
Nadhc
Regular Solution Theory
Vesicles
title_short Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
title_full Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
title_fullStr Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
title_full_unstemmed Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
title_sort Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration
dc.creator.none.fl_str_mv Fernández Leyes, Marcos Daniel
Messina, Paula Verónica
Andreucetti, Noemi Amalia
Luengo, Carina Vanesa
Schulz, Pablo Carlos
author Fernández Leyes, Marcos Daniel
author_facet Fernández Leyes, Marcos Daniel
Messina, Paula Verónica
Andreucetti, Noemi Amalia
Luengo, Carina Vanesa
Schulz, Pablo Carlos
author_role author
author2 Messina, Paula Verónica
Andreucetti, Noemi Amalia
Luengo, Carina Vanesa
Schulz, Pablo Carlos
author2_role author
author
author
author
dc.subject.none.fl_str_mv Aggregate Transitions
Ddab
Nadhc
Regular Solution Theory
Vesicles
topic Aggregate Transitions
Ddab
Nadhc
Regular Solution Theory
Vesicles
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 phase behavior for the very diluted DDAB-NaDHC-water system was investigated at 25°C. Fluorescence, conductivity, and surface tension experiments were carried out to determine the cac values. Comparison between experimental and calculated values shows the suitability of the regular theory to predict the critical aggregation concentrations for the tested systems. The interaction between both amphiphiles inside aggregates is not ideal, showing a large synergism. Such fact is reflected by the activity of coefficients values. The aggregates are mainly comprised by DDAB (18-30 % mol NaDHC) regardless of the NaDHC solution molar fraction; these molecules act as a good solvent of bile salt type molecule. Nevertheless, the gradual inclusion of NaDHC molecules inside DDAB bilayers leads to structural transformations. These facts are supposed to be due the combination of two effects: (i) the reduction of head groups hydration and (ii) the increment of chain repulsion.
Fil: Fernández Leyes, Marcos Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Andreucetti, Noemi Amalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Luengo, Carina Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Schulz, Pablo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
description The phase behavior for the very diluted DDAB-NaDHC-water system was investigated at 25°C. Fluorescence, conductivity, and surface tension experiments were carried out to determine the cac values. Comparison between experimental and calculated values shows the suitability of the regular theory to predict the critical aggregation concentrations for the tested systems. The interaction between both amphiphiles inside aggregates is not ideal, showing a large synergism. Such fact is reflected by the activity of coefficients values. The aggregates are mainly comprised by DDAB (18-30 % mol NaDHC) regardless of the NaDHC solution molar fraction; these molecules act as a good solvent of bile salt type molecule. Nevertheless, the gradual inclusion of NaDHC molecules inside DDAB bilayers leads to structural transformations. These facts are supposed to be due the combination of two effects: (i) the reduction of head groups hydration and (ii) the increment of chain repulsion.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/78994
Fernández Leyes, Marcos Daniel; Messina, Paula Verónica; Andreucetti, Noemi Amalia; Luengo, Carina Vanesa; Schulz, Pablo Carlos; Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration; Taylor & Francis; Soft Materials; 11; 2; 4-2013; 204-214
1539-445X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78994
identifier_str_mv Fernández Leyes, Marcos Daniel; Messina, Paula Verónica; Andreucetti, Noemi Amalia; Luengo, Carina Vanesa; Schulz, Pablo Carlos; Aggregate structural transitions noticed for the didodecyldimetilammonium bromide-sodium dehydrocholate catanionic mixed system at low concentration; Taylor & Francis; Soft Materials; 11; 2; 4-2013; 204-214
1539-445X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/1539445X.2012.617642
info:eu-repo/semantics/altIdentifier/doi/10.1080/1539445X.2012.617642
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
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
_version_ 1844614192765599744
score 13.070432

Publicaciones similares