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http://hdl.handle.net/10261/156128
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Coral, Diego Fernando | es_ES |
dc.contributor.author | Mendoza Zélis, Pedro | es_ES |
dc.contributor.author | Marciello, Marzia | es_ES |
dc.contributor.author | Morales, M. P. | es_ES |
dc.contributor.author | Craievich, Aldo | es_ES |
dc.contributor.author | Sánchez, Francisco H. | es_ES |
dc.contributor.author | Fernández van Raap, Marcela B. | es_ES |
dc.date.accessioned | 2017-10-06T10:14:39Z | - |
dc.date.available | 2017-10-06T10:14:39Z | - |
dc.date.issued | 2016-01-11 | - |
dc.identifier.citation | Langmuir 32(5): 1201–1213 (2016) | es_ES |
dc.identifier.issn | 0743-7463 | - |
dc.identifier.uri | http://hdl.handle.net/10261/156128 | - |
dc.description.abstract | Biomedical magnetic colloids commonly used in magnetic hyperthermia experiments often display a bidisperse structure, i.e., are composed of stable nanoclusters coexisting with well-dispersed nanoparticles. However, the influence of nanoclusters in the optimization of colloids for heat dissipation is usually excluded. In this work, bidisperse colloids are used to analyze the effect of nanoclustering and long-range magnetic dipolar interaction on the magnetic hyperthermia efficiency. Two kinds of colloids, composed of magnetite cores with mean sizes of around 10 and 18 nm, coated with oleic acid and dispersed in hexane, and coated with meso-2,3-dimercaptosuccinic acid and dispersed in water, were analyzed. Small-angle X-ray scattering was applied to thoroughly characterize nanoparticle structuring. We proved that the magnetic hyperthermia performances of nanoclusters and single nanoparticles are distinctive. Nanoclustering acts to reduce the specific heating efficiency whereas a peak against concentration appears for the well-dispersed component. Our experiments show that the heating efficiency of a magnetic colloid can increase or decrease when dipolar interactions increase and that the colloid concentration, i.e., dipolar interaction, can be used to improve magnetic hyperthermia. We have proven that the power dissipated by an ensemble of dispersed magnetic nanoparticles becomes a nonextensive property as a direct consequence of the long-range nature of dipolar interactions. This knowledge is a key point in selecting the correct dose that has to be injected to achieve the desired outcome in intracellular magnetic hyperthermia therapy. | es_ES |
dc.description.sponsorship | We acknowledge CONICET and UNLP of Argentina for financial support with grants PIP 0720 and X11/680 and the European Union for Multifun (EU-FP ref 262943) and NanoMag (EU-FP7 ref 60448) projects and MAT2014-52069-R from the Spanish Ministry of Economy and Competitiveness. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/262943 | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/604448 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2014-52069-R | es_ES |
dc.rights | closedAccess | es_ES |
dc.title | Effect of Nanoclustering and Dipolar Interactions in Heat Generation for Magnetic Hyperthermia | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1021/acs.langmuir.5b03559 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://doi.org/10.1021/acs.langmuir.5b03559 | es_ES |
dc.identifier.e-issn | 1520-5827 | - |
dc.contributor.funder | Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) | es_ES |
dc.contributor.funder | Universidad Nacional de Mar del Plata | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | Ministerio de Economía, Industria y Competitividad (España) | es_ES |
dc.relation.csic | Sí | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100007070 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100002923 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100010198 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
item.languageiso639-1 | en | - |
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