Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy

Autores
Gutkowski, Karin; Fernandez Prini, Roberto; Aramendia, Pedro Francisco; Japas, María Laura
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of near-criticality upon the properties of dilute solutions of attractive solutes has been previously studied only using pure solvents close to the vapor-liquid critical point. The experimental difficulties that plague this thermodynamic region have somewhat obscured the interpretations of the results. Consequently, the coupling of long-range critical fluctuations with short-range intermolecular interactions is still a matter of debate. We developed a new strategy consisting of studying the changes in the solvation shell of probe molecules dissolved in a binary solvent mixture close to its lower consolute critical point. The study is based on UV-vis absorption and fluorescent emission measurements of the solvatochromic and thermochromic effects of two dyes, Reichardt's Dye and Nile Red, dissolved in mixtures of lutidine-water. The results show unambiguously the existence of a subtle change in the composition of the near-critical solvent surrounding the probe molecules with respect to the bulk composition, thus we conclude that the coupling of long-range fluctuations with short-range interactions is now firmly established.
Fil: Gutkowski, Karin. Comisión Nacional de Energía Atómica; Argentina
Fil: Fernandez Prini, Roberto. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Aramendia, Pedro Francisco. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
Fil: Japas, María Laura. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina
Materia
Critical Solution Behaviour
Solvation
Intermolecular Interaction
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:11336/68713
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategyGutkowski, KarinFernandez Prini, RobertoAramendia, Pedro FranciscoJapas, María LauraCritical Solution BehaviourSolvationIntermolecular Interactionhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The effect of near-criticality upon the properties of dilute solutions of attractive solutes has been previously studied only using pure solvents close to the vapor-liquid critical point. The experimental difficulties that plague this thermodynamic region have somewhat obscured the interpretations of the results. Consequently, the coupling of long-range critical fluctuations with short-range intermolecular interactions is still a matter of debate. We developed a new strategy consisting of studying the changes in the solvation shell of probe molecules dissolved in a binary solvent mixture close to its lower consolute critical point. The study is based on UV-vis absorption and fluorescent emission measurements of the solvatochromic and thermochromic effects of two dyes, Reichardt's Dye and Nile Red, dissolved in mixtures of lutidine-water. The results show unambiguously the existence of a subtle change in the composition of the near-critical solvent surrounding the probe molecules with respect to the bulk composition, thus we conclude that the coupling of long-range fluctuations with short-range interactions is now firmly established.Fil: Gutkowski, Karin. Comisión Nacional de Energía Atómica; ArgentinaFil: Fernandez Prini, Roberto. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Aramendia, Pedro Francisco. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; ArgentinaFil: Japas, María Laura. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; ArgentinaAmerican Chemical Society2011-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68713Gutkowski, Karin; Fernandez Prini, Roberto; Aramendia, Pedro Francisco; Japas, María Laura; Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy; American Chemical Society; Journal of Physical Chemistry B; 115; 51; 12-2011; 15303-153121520-6106CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/jp209007yinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp209007yinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:13Zoai:ri.conicet.gov.ar:11336/68713instacron: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 10:02:13.926CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
title Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
spellingShingle Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
Gutkowski, Karin
Critical Solution Behaviour
Solvation
Intermolecular Interaction
title_short Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
title_full Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
title_fullStr Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
title_full_unstemmed Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
title_sort Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
dc.creator.none.fl_str_mv Gutkowski, Karin
Fernandez Prini, Roberto
Aramendia, Pedro Francisco
Japas, María Laura
author Gutkowski, Karin
author_facet Gutkowski, Karin
Fernandez Prini, Roberto
Aramendia, Pedro Francisco
Japas, María Laura
author_role author
author2 Fernandez Prini, Roberto
Aramendia, Pedro Francisco
Japas, María Laura
author2_role author
author
author
dc.subject.none.fl_str_mv Critical Solution Behaviour
Solvation
Intermolecular Interaction
topic Critical Solution Behaviour
Solvation
Intermolecular Interaction
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 near-criticality upon the properties of dilute solutions of attractive solutes has been previously studied only using pure solvents close to the vapor-liquid critical point. The experimental difficulties that plague this thermodynamic region have somewhat obscured the interpretations of the results. Consequently, the coupling of long-range critical fluctuations with short-range intermolecular interactions is still a matter of debate. We developed a new strategy consisting of studying the changes in the solvation shell of probe molecules dissolved in a binary solvent mixture close to its lower consolute critical point. The study is based on UV-vis absorption and fluorescent emission measurements of the solvatochromic and thermochromic effects of two dyes, Reichardt's Dye and Nile Red, dissolved in mixtures of lutidine-water. The results show unambiguously the existence of a subtle change in the composition of the near-critical solvent surrounding the probe molecules with respect to the bulk composition, thus we conclude that the coupling of long-range fluctuations with short-range interactions is now firmly established.
Fil: Gutkowski, Karin. Comisión Nacional de Energía Atómica; Argentina
Fil: Fernandez Prini, Roberto. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Aramendia, Pedro Francisco. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
Fil: Japas, María Laura. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina
description The effect of near-criticality upon the properties of dilute solutions of attractive solutes has been previously studied only using pure solvents close to the vapor-liquid critical point. The experimental difficulties that plague this thermodynamic region have somewhat obscured the interpretations of the results. Consequently, the coupling of long-range critical fluctuations with short-range intermolecular interactions is still a matter of debate. We developed a new strategy consisting of studying the changes in the solvation shell of probe molecules dissolved in a binary solvent mixture close to its lower consolute critical point. The study is based on UV-vis absorption and fluorescent emission measurements of the solvatochromic and thermochromic effects of two dyes, Reichardt's Dye and Nile Red, dissolved in mixtures of lutidine-water. The results show unambiguously the existence of a subtle change in the composition of the near-critical solvent surrounding the probe molecules with respect to the bulk composition, thus we conclude that the coupling of long-range fluctuations with short-range interactions is now firmly established.
publishDate 2011
dc.date.none.fl_str_mv 2011-12
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/11336/68713
Gutkowski, Karin; Fernandez Prini, Roberto; Aramendia, Pedro Francisco; Japas, María Laura; Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy; American Chemical Society; Journal of Physical Chemistry B; 115; 51; 12-2011; 15303-15312
1520-6106
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68713
identifier_str_mv Gutkowski, Karin; Fernandez Prini, Roberto; Aramendia, Pedro Francisco; Japas, María Laura; Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy; American Chemical Society; Journal of Physical Chemistry B; 115; 51; 12-2011; 15303-15312
1520-6106
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.acs.org/doi/abs/10.1021/jp209007y
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp209007y
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
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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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