Aggregation effects on the magnetic properties of iron oxide colloids

Gutiérrez, L. (Universidad de Zaragoza) ; de la Cueva, L. ; Moros, M. (Universidad de Zaragoza) ; Mazarío, E. ; de Bernardo, S. ; de la Fuente, J.M. ; Morales, M.P. ; Salas, G.

Resumen: Magnetic nanoparticles (MNPs), and in particular iron oxide nanoparticles (mainly magnetite and maghemite), are being widely used in the form of aqueous colloids for biomedical applications. In such colloids, nanoparticles tend to form assemblies, either aggregates, if the union is permanent, or agglomerates, if it is reversible. These clustering processes have a strong impact on the MNPs'' properties that are often not well understood. In this review, the causes and consequences of MNPs aggregation/agglomeration are reviewed and discussed. Special attention has been paid to the impact of the MNPs aggregation/agglomeration on their magnetic properties and heating properties, when exposed to an alternating magnetic field in the frame of magnetic hyperthermia. In addition, a model system with MNPs of two different sizes coated with three different molecules oleic acid, meso-2, 3-dimercaptosuccinic acid and poly(maleic anhydride-alt-1-octadecene) has been characterized and the results used to support the ideas reviewed.

Idioma: Inglés

DOI: 10.1088/1361-6528/aafbff

Año: 2019

Publicado en: Nanotechnology 30, 11 (2019), 112001
ISSN: 0957-4484

Factor impacto JCR: 3.551 (2019)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 109 / 314 = 0.347 (2019) - Q2 - T2
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 51 / 103 = 0.495 (2019) - Q2 - T2
Categ. JCR: PHYSICS, APPLIED rank: 40 / 154 = 0.26 (2019) - Q2 - T1

Factor impacto SCIMAGO: 1.026 - Materials Science (miscellaneous) (Q1) - Mechanics of Materials (Q1) - Chemistry (miscellaneous) (Q1) - Electrical and Electronic Engineering (Q1) - Mechanical Engineering (Q1) - Nanoscience and Nanotechnology (Q2) - Bioengineering (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/BIONANOSURF
Financiación: info:eu-repo/grantAgreement/ES/DGA/FSE
Financiación: info:eu-repo/grantAgreement/EC/FP7/239931/EU/Multifunctional Magnetic Nanoparticles: Towards Smart Drugs Design/NANOPUZZLE
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-71806-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2017-88148-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2014-15512
Financiación: info:eu-repo/grantAgreement/ES/MINECO/SAF2014-54763-C2-2-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/SEV-2016-0686

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)