Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia

Magnetite (Fe3O4) nanoparticles are proper materials for Magnetic Fluid Hyperthermia applications whenever these conjugate stability at physiological (neutral pH) medium and high specific dissipation power. Here, magnetite nanoparticles 9–12 nm in size, electrostatically stabilized by citric acid co...

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Autores: de Sousa, María Elisa, Fernandez Van Raap, Marcela Beatriz, Rivas, Patricia, Mendoza Zélis, Pedro, Girardin, Pablo, Pasquevich, Gustavo Alberto, Alessandrini, José Luis, Muraca, Diego, Sánchez, Francisco Homero
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/23723
Acceso en línea:http://hdl.handle.net/11336/23723
Access Level:acceso abierto
Palabra clave:Nanoparticle
Ferrofluid
Magnetic Hyperthermia
Magnetite
Citric acid coating
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
title Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
spellingShingle Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
de Sousa, María Elisa
Nanoparticle
Ferrofluid
Magnetic Hyperthermia
Magnetite
Citric acid coating
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
title_full Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
title_fullStr Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
title_full_unstemmed Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
title_sort Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia
dc.creator.none.fl_str_mv de Sousa, María Elisa
Fernandez Van Raap, Marcela Beatriz
Rivas, Patricia
Mendoza Zélis, Pedro
Girardin, Pablo
Pasquevich, Gustavo Alberto
Alessandrini, José Luis
Muraca, Diego
Sánchez, Francisco Homero
author de Sousa, María Elisa
author_facet de Sousa, María Elisa
Fernandez Van Raap, Marcela Beatriz
Rivas, Patricia
Mendoza Zélis, Pedro
Girardin, Pablo
Pasquevich, Gustavo Alberto
Alessandrini, José Luis
Muraca, Diego
Sánchez, Francisco Homero
author_role author
author2 Fernandez Van Raap, Marcela Beatriz
Rivas, Patricia
Mendoza Zélis, Pedro
Girardin, Pablo
Pasquevich, Gustavo Alberto
Alessandrini, José Luis
Muraca, Diego
Sánchez, Francisco Homero
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanoparticle
Ferrofluid
Magnetic Hyperthermia
Magnetite
Citric acid coating
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic Nanoparticle
Ferrofluid
Magnetic Hyperthermia
Magnetite
Citric acid coating
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description Magnetite (Fe3O4) nanoparticles are proper materials for Magnetic Fluid Hyperthermia applications whenever these conjugate stability at physiological (neutral pH) medium and high specific dissipation power. Here, magnetite nanoparticles 9–12 nm in size, electrostatically stabilized by citric acid coating, with hydrodynamic sizes in the range 17–30 nm, and well dispersed in aqueous solution were prepared using a chemical route. The influence of media acidity during the adsorption of citric acid (CA) on the suspension’s long-term stability was systematically investigated. The highest content of nanoparticles in a stable suspension at neutral pH is obtained for coating performed at pH = 4.58, corresponding to the larger amount of CA molecules adsorbed by one carboxylate link. Specific absorption rates (SARs) of various magnetite colloids, determined calorimetrically at a radio frequency field of 265 kHz and field amplitude of 40.1 kA/m, are analyzed in terms of structural and magnetic colloid properties. Larger dipolar interactions lead to larger Néel relaxation times, in some cases larger than Brown relaxation times, which in the present case enhanced magnetic radio frequency heating. The improvement of suspension stability results in a decrease of SAR values, and this decrease is even large in comparison with uncoated magnetite nanoparticles. This fact is related to interactions between particles.
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/11336/23723
de Sousa, María Elisa; Fernandez Van Raap, Marcela Beatriz; Rivas, Patricia; Mendoza Zélis, Pedro; Girardin, Pablo; et al.; Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia; American Chemical Society; Journal of Physical Chemistry C; 117; 10; 2-2013; 5436-5545
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23723
identifier_str_mv de Sousa, María Elisa; Fernandez Van Raap, Marcela Beatriz; Rivas, Patricia; Mendoza Zélis, Pedro; Girardin, Pablo; et al.; Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia; American Chemical Society; Journal of Physical Chemistry C; 117; 10; 2-2013; 5436-5545
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp311556b
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp311556b
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
application/pdf
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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_ 1799195991705911296
spelling Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermiade Sousa, María ElisaFernandez Van Raap, Marcela BeatrizRivas, PatriciaMendoza Zélis, PedroGirardin, PabloPasquevich, Gustavo AlbertoAlessandrini, José LuisMuraca, DiegoSánchez, Francisco HomeroNanoparticleFerrofluidMagnetic HyperthermiaMagnetiteCitric acid coatinghttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Magnetite (Fe3O4) nanoparticles are proper materials for Magnetic Fluid Hyperthermia applications whenever these conjugate stability at physiological (neutral pH) medium and high specific dissipation power. Here, magnetite nanoparticles 9–12 nm in size, electrostatically stabilized by citric acid coating, with hydrodynamic sizes in the range 17–30 nm, and well dispersed in aqueous solution were prepared using a chemical route. The influence of media acidity during the adsorption of citric acid (CA) on the suspension’s long-term stability was systematically investigated. The highest content of nanoparticles in a stable suspension at neutral pH is obtained for coating performed at pH = 4.58, corresponding to the larger amount of CA molecules adsorbed by one carboxylate link. Specific absorption rates (SARs) of various magnetite colloids, determined calorimetrically at a radio frequency field of 265 kHz and field amplitude of 40.1 kA/m, are analyzed in terms of structural and magnetic colloid properties. Larger dipolar interactions lead to larger Néel relaxation times, in some cases larger than Brown relaxation times, which in the present case enhanced magnetic radio frequency heating. The improvement of suspension stability results in a decrease of SAR values, and this decrease is even large in comparison with uncoated magnetite nanoparticles. This fact is related to interactions between particles.Fil: de Sousa, María Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Fernandez Van Raap, Marcela Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Rivas, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Mendoza Zélis, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Girardin, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Pasquevich, Gustavo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Alessandrini, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Muraca, Diego. Universidade Estadual de Campinas; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sánchez, Francisco Homero. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Chemical Society2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23723de Sousa, María Elisa; Fernandez Van Raap, Marcela Beatriz; Rivas, Patricia; Mendoza Zélis, Pedro; Girardin, Pablo; et al.; Stability and relaxation mechanisms of citric acid coated magnetite nanoparticles for magnetic hyperthermia; American Chemical Society; Journal of Physical Chemistry C; 117; 10; 2-2013; 5436-55451932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp311556binfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp311556binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:10:52Zoai:ri.conicet.gov.ar:11336/23723instacron: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:34982024-05-08 14:10:52.708CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
score 15,811543

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