1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent

Autores
Daniel, Carla I.; Vaca Chávez Fornasero, Fabián; Portugal. Carla A. M.; Crespo, João G.; Sebastiao, Pedro J.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A proton nuclear magnetic relaxation dispersion 1H NMRD study of the molecular dynamics in mixtures of magnetic ionic liquid [P66614][FeCl4] with [P66614][Cl] ionic liquid and mixtures of [P66614][FeCl4] with dimethyl sulfoxide (DMSO) is presented. The proton spin-lattice relaxation rate, R1, was measured in the frequency range of 8 kHz-300 MHz. The viscosity of the binary mixtures was measured as a function of an applied magnetic field, B, in the range of 0-2 T. In the case of DMSO/[P66614][FeCl4] the viscosity was found to be independent from the magnetic field, while in the case of the [P66614][Cl]/[P66614][FeCl4] system viscosity decreased with the increase of the magnetic field strength. The spin-lattice relaxation results were analyzed for all systems taking into account the relaxation mechanisms associated with the molecular motions with correlation times in a range between 10-11 and 10-7s, usually observed by NMRD, and the paramagnetic relaxation contributions associated with the presence of the magnetic ions in the systems. In the case of the DMSO/[P66614][FeCl4] system the R1 dispersion shows the relaxation enhancement due to the presence of the magnetic ions, similar to that reported for contrast agents. For the [P66614][Cl]/[P66614][FeCl4] system, the R1 dispersion presents a much larger paramagnetic relaxation contribution, in comparison with that observed for the DMSO/[P66614][FeCl4] mixtures but different from that reported for other magnetic ionic liquid system. In the [P66614][Cl]/[P66614][FeCl4] system the relaxation enhancement associated with the paramagnetic ions is clearly not proportional to the concentration of magnetic ions, in contrast with what is observed for the DMSO/[P66614][FeCl4] system.
Fil: Daniel, Carla I.. Universidade Nova de Lisboa; Portugal
Fil: Vaca Chávez Fornasero, Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Portugal. Carla A. M.. Universidade Nova de Lisboa; Portugal
Fil: Crespo, João G.. Universidade Nova de Lisboa; Portugal
Fil: Sebastiao, Pedro J.. Instituto Superior Tecnico; Portugal
Materia
Nmr
Contrast Agent
Ionic Liquids
Dynamics
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:11336/52234
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/52234
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast AgentDaniel, Carla I.Vaca Chávez Fornasero, FabiánPortugal. Carla A. M.Crespo, João G.Sebastiao, Pedro J.NmrContrast AgentIonic LiquidsDynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A proton nuclear magnetic relaxation dispersion 1H NMRD study of the molecular dynamics in mixtures of magnetic ionic liquid [P66614][FeCl4] with [P66614][Cl] ionic liquid and mixtures of [P66614][FeCl4] with dimethyl sulfoxide (DMSO) is presented. The proton spin-lattice relaxation rate, R1, was measured in the frequency range of 8 kHz-300 MHz. The viscosity of the binary mixtures was measured as a function of an applied magnetic field, B, in the range of 0-2 T. In the case of DMSO/[P66614][FeCl4] the viscosity was found to be independent from the magnetic field, while in the case of the [P66614][Cl]/[P66614][FeCl4] system viscosity decreased with the increase of the magnetic field strength. The spin-lattice relaxation results were analyzed for all systems taking into account the relaxation mechanisms associated with the molecular motions with correlation times in a range between 10-11 and 10-7s, usually observed by NMRD, and the paramagnetic relaxation contributions associated with the presence of the magnetic ions in the systems. In the case of the DMSO/[P66614][FeCl4] system the R1 dispersion shows the relaxation enhancement due to the presence of the magnetic ions, similar to that reported for contrast agents. For the [P66614][Cl]/[P66614][FeCl4] system, the R1 dispersion presents a much larger paramagnetic relaxation contribution, in comparison with that observed for the DMSO/[P66614][FeCl4] mixtures but different from that reported for other magnetic ionic liquid system. In the [P66614][Cl]/[P66614][FeCl4] system the relaxation enhancement associated with the paramagnetic ions is clearly not proportional to the concentration of magnetic ions, in contrast with what is observed for the DMSO/[P66614][FeCl4] system.Fil: Daniel, Carla I.. Universidade Nova de Lisboa; PortugalFil: Vaca Chávez Fornasero, Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Portugal. Carla A. M.. Universidade Nova de Lisboa; PortugalFil: Crespo, João G.. Universidade Nova de Lisboa; PortugalFil: Sebastiao, Pedro J.. Instituto Superior Tecnico; PortugalAmerican Chemical Society2015-09-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/52234Daniel, Carla I.; Vaca Chávez Fornasero, Fabián; Portugal. Carla A. M.; Crespo, João G.; Sebastiao, Pedro J.; 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent; American Chemical Society; Journal of Physical Chemistry B; 119; 35; 7-9-2015; 11740-117471520-61061520-5207CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/acs.jpcb.5b04772info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcb.5b04772info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:43Zoai:ri.conicet.gov.ar:11336/52234instacron: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 10:07:44.168CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
title 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
spellingShingle 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
Daniel, Carla I.
Nmr
Contrast Agent
Ionic Liquids
Dynamics
title_short 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
title_full 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
title_fullStr 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
title_full_unstemmed 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
title_sort 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent
dc.creator.none.fl_str_mv Daniel, Carla I.
Vaca Chávez Fornasero, Fabián
Portugal. Carla A. M.
Crespo, João G.
Sebastiao, Pedro J.
author Daniel, Carla I.
author_facet Daniel, Carla I.
Vaca Chávez Fornasero, Fabián
Portugal. Carla A. M.
Crespo, João G.
Sebastiao, Pedro J.
author_role author
author2 Vaca Chávez Fornasero, Fabián
Portugal. Carla A. M.
Crespo, João G.
Sebastiao, Pedro J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Nmr
Contrast Agent
Ionic Liquids
Dynamics
topic Nmr
Contrast Agent
Ionic Liquids
Dynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A proton nuclear magnetic relaxation dispersion 1H NMRD study of the molecular dynamics in mixtures of magnetic ionic liquid [P66614][FeCl4] with [P66614][Cl] ionic liquid and mixtures of [P66614][FeCl4] with dimethyl sulfoxide (DMSO) is presented. The proton spin-lattice relaxation rate, R1, was measured in the frequency range of 8 kHz-300 MHz. The viscosity of the binary mixtures was measured as a function of an applied magnetic field, B, in the range of 0-2 T. In the case of DMSO/[P66614][FeCl4] the viscosity was found to be independent from the magnetic field, while in the case of the [P66614][Cl]/[P66614][FeCl4] system viscosity decreased with the increase of the magnetic field strength. The spin-lattice relaxation results were analyzed for all systems taking into account the relaxation mechanisms associated with the molecular motions with correlation times in a range between 10-11 and 10-7s, usually observed by NMRD, and the paramagnetic relaxation contributions associated with the presence of the magnetic ions in the systems. In the case of the DMSO/[P66614][FeCl4] system the R1 dispersion shows the relaxation enhancement due to the presence of the magnetic ions, similar to that reported for contrast agents. For the [P66614][Cl]/[P66614][FeCl4] system, the R1 dispersion presents a much larger paramagnetic relaxation contribution, in comparison with that observed for the DMSO/[P66614][FeCl4] mixtures but different from that reported for other magnetic ionic liquid system. In the [P66614][Cl]/[P66614][FeCl4] system the relaxation enhancement associated with the paramagnetic ions is clearly not proportional to the concentration of magnetic ions, in contrast with what is observed for the DMSO/[P66614][FeCl4] system.
Fil: Daniel, Carla I.. Universidade Nova de Lisboa; Portugal
Fil: Vaca Chávez Fornasero, Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Portugal. Carla A. M.. Universidade Nova de Lisboa; Portugal
Fil: Crespo, João G.. Universidade Nova de Lisboa; Portugal
Fil: Sebastiao, Pedro J.. Instituto Superior Tecnico; Portugal
description A proton nuclear magnetic relaxation dispersion 1H NMRD study of the molecular dynamics in mixtures of magnetic ionic liquid [P66614][FeCl4] with [P66614][Cl] ionic liquid and mixtures of [P66614][FeCl4] with dimethyl sulfoxide (DMSO) is presented. The proton spin-lattice relaxation rate, R1, was measured in the frequency range of 8 kHz-300 MHz. The viscosity of the binary mixtures was measured as a function of an applied magnetic field, B, in the range of 0-2 T. In the case of DMSO/[P66614][FeCl4] the viscosity was found to be independent from the magnetic field, while in the case of the [P66614][Cl]/[P66614][FeCl4] system viscosity decreased with the increase of the magnetic field strength. The spin-lattice relaxation results were analyzed for all systems taking into account the relaxation mechanisms associated with the molecular motions with correlation times in a range between 10-11 and 10-7s, usually observed by NMRD, and the paramagnetic relaxation contributions associated with the presence of the magnetic ions in the systems. In the case of the DMSO/[P66614][FeCl4] system the R1 dispersion shows the relaxation enhancement due to the presence of the magnetic ions, similar to that reported for contrast agents. For the [P66614][Cl]/[P66614][FeCl4] system, the R1 dispersion presents a much larger paramagnetic relaxation contribution, in comparison with that observed for the DMSO/[P66614][FeCl4] mixtures but different from that reported for other magnetic ionic liquid system. In the [P66614][Cl]/[P66614][FeCl4] system the relaxation enhancement associated with the paramagnetic ions is clearly not proportional to the concentration of magnetic ions, in contrast with what is observed for the DMSO/[P66614][FeCl4] system.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-07
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/11336/52234
Daniel, Carla I.; Vaca Chávez Fornasero, Fabián; Portugal. Carla A. M.; Crespo, João G.; Sebastiao, Pedro J.; 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent; American Chemical Society; Journal of Physical Chemistry B; 119; 35; 7-9-2015; 11740-11747
1520-6106
1520-5207
CONICET Digital
CONICET
url http://hdl.handle.net/11336/52234
identifier_str_mv Daniel, Carla I.; Vaca Chávez Fornasero, Fabián; Portugal. Carla A. M.; Crespo, João G.; Sebastiao, Pedro J.; 1H NMR Relaxation Study of a Magnetic Ionic Liquid as a Potential Contrast Agent; American Chemical Society; Journal of Physical Chemistry B; 119; 35; 7-9-2015; 11740-11747
1520-6106
1520-5207
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/acs.jpcb.5b04772
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcb.5b04772
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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