Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System

Autores
Florez Tabares, Juan Sebastian; Correa, Nestor Mariano; Silber, Juana J.; Sereno, Leonides Edmundo; Molina, Patricia Gabriela
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this contribution the electrochemistry of [Fe(CN)6]4-/3- as the probe molecule was investigated in benzyl-n-hexadecyldimethylammonium chloride (BHDC) reverse micelles (RMs) varying the composition of the external solvent (benzene:n-heptane mixtures) and the surfactant concentration, at a fixed water content and probe concentration. The electrochemical and dynamic light scattering results show that in water/BHDC/benzene:n-heptane systems the aggregate sizes increase on increasing BHDC concentration. This behavior was unexpected since it is known that for water/BHDC/benzene RM systems keeping the water content constant and the surfactant concentration below 0.2 M, the droplet sizes are independent of the concentration of the surfactant. We explain the results considering that on changing the external solvent to benzene:n-heptane mixtures, RMs tend to associate in clusters and equilibrium between free RMs and droplet clusters is established. A model is presented which, using electrochemical and dynamic light scattering data, allows calculating the aggregation number of the RMs, the number of RMs that form the droplet clusters and the standard electron transfer heterogeneous rate constant.
Fil: Florez Tabares, Juan Sebastian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Molina, Patricia Gabriela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Materia
REVERSE MICELLES
BHDC
MIXED SOLVENTS
MICELLES AGGREGATION
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:11336/180235
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/180235
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane SystemFlorez Tabares, Juan SebastianCorrea, Nestor MarianoSilber, Juana J.Sereno, Leonides EdmundoMolina, Patricia GabrielaREVERSE MICELLESBHDCMIXED SOLVENTSMICELLES AGGREGATIONhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this contribution the electrochemistry of [Fe(CN)6]4-/3- as the probe molecule was investigated in benzyl-n-hexadecyldimethylammonium chloride (BHDC) reverse micelles (RMs) varying the composition of the external solvent (benzene:n-heptane mixtures) and the surfactant concentration, at a fixed water content and probe concentration. The electrochemical and dynamic light scattering results show that in water/BHDC/benzene:n-heptane systems the aggregate sizes increase on increasing BHDC concentration. This behavior was unexpected since it is known that for water/BHDC/benzene RM systems keeping the water content constant and the surfactant concentration below 0.2 M, the droplet sizes are independent of the concentration of the surfactant. We explain the results considering that on changing the external solvent to benzene:n-heptane mixtures, RMs tend to associate in clusters and equilibrium between free RMs and droplet clusters is established. A model is presented which, using electrochemical and dynamic light scattering data, allows calculating the aggregation number of the RMs, the number of RMs that form the droplet clusters and the standard electron transfer heterogeneous rate constant.Fil: Florez Tabares, Juan Sebastian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Molina, Patricia Gabriela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaRoyal Society of Chemistry2015-02info: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/11336/180235Florez Tabares, Juan Sebastian; Correa, Nestor Mariano; Silber, Juana J.; Sereno, Leonides Edmundo; Molina, Patricia Gabriela; Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System; Royal Society of Chemistry; Soft Matter; 11; 15; 2-2015; 2952-29621744-683XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2015/sm/c5sm00146cinfo:eu-repo/semantics/altIdentifier/doi/10.1039/C5SM00146Cinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:56:31Zoai:ri.conicet.gov.ar:11336/180235instacron: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 09:56:31.55CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
title Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
spellingShingle Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
Florez Tabares, Juan Sebastian
REVERSE MICELLES
BHDC
MIXED SOLVENTS
MICELLES AGGREGATION
title_short Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
title_full Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
title_fullStr Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
title_full_unstemmed Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
title_sort Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System
dc.creator.none.fl_str_mv Florez Tabares, Juan Sebastian
Correa, Nestor Mariano
Silber, Juana J.
Sereno, Leonides Edmundo
Molina, Patricia Gabriela
author Florez Tabares, Juan Sebastian
author_facet Florez Tabares, Juan Sebastian
Correa, Nestor Mariano
Silber, Juana J.
Sereno, Leonides Edmundo
Molina, Patricia Gabriela
author_role author
author2 Correa, Nestor Mariano
Silber, Juana J.
Sereno, Leonides Edmundo
Molina, Patricia Gabriela
author2_role author
author
author
author
dc.subject.none.fl_str_mv REVERSE MICELLES
BHDC
MIXED SOLVENTS
MICELLES AGGREGATION
topic REVERSE MICELLES
BHDC
MIXED SOLVENTS
MICELLES AGGREGATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this contribution the electrochemistry of [Fe(CN)6]4-/3- as the probe molecule was investigated in benzyl-n-hexadecyldimethylammonium chloride (BHDC) reverse micelles (RMs) varying the composition of the external solvent (benzene:n-heptane mixtures) and the surfactant concentration, at a fixed water content and probe concentration. The electrochemical and dynamic light scattering results show that in water/BHDC/benzene:n-heptane systems the aggregate sizes increase on increasing BHDC concentration. This behavior was unexpected since it is known that for water/BHDC/benzene RM systems keeping the water content constant and the surfactant concentration below 0.2 M, the droplet sizes are independent of the concentration of the surfactant. We explain the results considering that on changing the external solvent to benzene:n-heptane mixtures, RMs tend to associate in clusters and equilibrium between free RMs and droplet clusters is established. A model is presented which, using electrochemical and dynamic light scattering data, allows calculating the aggregation number of the RMs, the number of RMs that form the droplet clusters and the standard electron transfer heterogeneous rate constant.
Fil: Florez Tabares, Juan Sebastian. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Correa, Nestor Mariano. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Silber, Juana J.. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Molina, Patricia Gabriela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
description In this contribution the electrochemistry of [Fe(CN)6]4-/3- as the probe molecule was investigated in benzyl-n-hexadecyldimethylammonium chloride (BHDC) reverse micelles (RMs) varying the composition of the external solvent (benzene:n-heptane mixtures) and the surfactant concentration, at a fixed water content and probe concentration. The electrochemical and dynamic light scattering results show that in water/BHDC/benzene:n-heptane systems the aggregate sizes increase on increasing BHDC concentration. This behavior was unexpected since it is known that for water/BHDC/benzene RM systems keeping the water content constant and the surfactant concentration below 0.2 M, the droplet sizes are independent of the concentration of the surfactant. We explain the results considering that on changing the external solvent to benzene:n-heptane mixtures, RMs tend to associate in clusters and equilibrium between free RMs and droplet clusters is established. A model is presented which, using electrochemical and dynamic light scattering data, allows calculating the aggregation number of the RMs, the number of RMs that form the droplet clusters and the standard electron transfer heterogeneous rate constant.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
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/11336/180235
Florez Tabares, Juan Sebastian; Correa, Nestor Mariano; Silber, Juana J.; Sereno, Leonides Edmundo; Molina, Patricia Gabriela; Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System; Royal Society of Chemistry; Soft Matter; 11; 15; 2-2015; 2952-2962
1744-683X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180235
identifier_str_mv Florez Tabares, Juan Sebastian; Correa, Nestor Mariano; Silber, Juana J.; Sereno, Leonides Edmundo; Molina, Patricia Gabriela; Droplet Droplet Interactions investigated using a Combination of Electrochemical and Dynamic Light Scattering Techniques: The Case of Water/BHDC/Benzene:n-Heptane System; Royal Society of Chemistry; Soft Matter; 11; 15; 2-2015; 2952-2962
1744-683X
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://pubs.rsc.org/en/content/articlelanding/2015/sm/c5sm00146c
info:eu-repo/semantics/altIdentifier/doi/10.1039/C5SM00146C
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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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