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Sojková T, Gröger R, Poloprudský J, Kuběna I, Schneeweiss O, Sojka M, Šiška Z, Pongrácz J, Pizúrová N. Kinetics of spontaneous phase transitions from wüstite to magnetite in superparamagnetic core-shell nanocubes of iron oxides. NANOSCALE 2024. [PMID: 38380646 DOI: 10.1039/d3nr06254f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Iron oxide nanoparticles with a wüstite structure have been prepared by thermal decomposition. In air, they undergo a spontaneous transition into a thermodynamically more stable magnetite structure that grows from the surface. The thickness of this magnetite shell increases with time, thereby producing a series of core-shell nanoparticles. We investigated the kinetics of this phase transition in 23 nm nanocubes using time-resolved XRD, from which the fractions of individual phases were determined by the Rietveld refinement. This kinetics is described theoretically using three coupled reaction-diffusion master equations for the concentrations of oxygen, wüstite, and magnetite, in which both the diffusion of oxygen and its reaction with wüstite are thermally activated. The coefficients of these terms were adjusted so that the predictions of the model reproduce the XRD data at 298 K and 353 K, whereas the predictive capability of the model was assessed by comparing its predictions with measurements at 403 K.
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Affiliation(s)
- Tereza Sojková
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
- Central European Institute of Technology (CEITEC), Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Roman Gröger
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
| | - Jakub Poloprudský
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
| | - Ivo Kuběna
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
| | - Oldřich Schneeweiss
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
| | - Martin Sojka
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
| | - Zuzana Šiška
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
- Central European Institute of Technology (CEITEC), Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Jakub Pongrácz
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
- Central European Institute of Technology (CEITEC), Brno University of Technology, Purkyňova 123, 612 00 Brno, Czech Republic
| | - Naděžda Pizúrová
- Institute of Physics of Materials and CEITEC IPM, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic.
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2
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Ghoshani M, Mozaffari M, Acet M, Hosseini M, Vashaee D. Exploring the Enhancement of Exchange Bias in Innovative Core/Shell/Shell Structures: Synthesis and Magnetic Properties of Co-Oxide/Co and Co-Oxide/Co/Co-Oxide Inverted Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:880. [PMID: 36903758 PMCID: PMC10005359 DOI: 10.3390/nano13050880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/29/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
In this study, we investigate the enhancement of exchange bias in core/shell/shell structures by synthesizing single inverted core/shell (Co-oxide/Co) and core/shell/shell (Co-oxide/Co/Co-oxide) nanostructures through a two-step reduction and oxidation method. We evaluate the magnetic properties of the structures and study the effect of shell thickness on the exchange bias by synthesizing various shell thicknesses of Co-oxide/Co/Co-oxide nanostructures. The extra exchange coupling formed at the shell-shell interface in the core/shell/shell structure leads to a remarkable increase in the coercivity and the strength of the exchange bias by three and four orders, respectively. The strongest exchange bias is achieved for the sample comprising the thinnest outer Co-oxide shell. Despite the general declining trend of the exchange bias with Co-oxide shell thickness, we also observe a nonmonotonic behavior in which the exchange bias oscillates slightly as the shell thickness increases. This phenomenon is ascribed to the dependence of the antiferromagnetic outer shell thickness variation at the expense of the simultaneous opposite variation in the ferromagnetic inner shell.
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Affiliation(s)
- Maral Ghoshani
- Department of Physics, Faculty of Physics, University of Isfahan, Isfahan 81746-73441, Iran
- Instituto Regional de Investigación Científica Aplicada (IRICA) and Departamento de Física Aplicada, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Morteza Mozaffari
- Department of Physics, Faculty of Physics, University of Isfahan, Isfahan 81746-73441, Iran
| | - Mehmet Acet
- Faculty of Physics and CENIDE, Universität Duisburg-Essen, 47048 Duisburg, Germany
| | - Mahshid Hosseini
- Physics Department, North Carolina State University, Raleigh, NC 27606, USA
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27606, USA
| | - Daryoosh Vashaee
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27606, USA
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USA
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3
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Lavorato GC, de Almeida AA, Vericat C, Fonticelli MH. Redox phase transformations in magnetite nanoparticles: impact on their composition, structure and biomedical applications. NANOTECHNOLOGY 2023; 34:192001. [PMID: 36825776 DOI: 10.1088/1361-6528/acb943] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Magnetite nanoparticles (NPs) are one of the most investigated nanomaterials so far and modern synthesis methods currently provide an exceptional control of their size, shape, crystallinity and surface functionalization. These advances have enabled their use in different fields ranging from environmental applications to biomedicine. However, several studies have shown that the precise composition and crystal structure of magnetite NPs depend on their redox phase transformations, which have a profound impact on their physicochemical properties and, ultimately, on their technological applications. Although the physical mechanisms behind such chemical transformations in bulk materials have been known for a long time, experiments on NPs with large surface-to-volume ratios have revealed intriguing results. This article is focused on reviewing the current status of the field. Following an introduction on the fundamental properties of magnetite and other related iron oxides (including maghemite and wüstite), some basic concepts on the chemical routes to prepare iron oxide nanomaterials are presented. The key experimental techniques available to study phase transformations in iron oxides, their advantages and drawbacks to the study of nanomaterials are then discussed. The major section of this work is devoted to the topotactic oxidation of magnetite NPs and, in this regard, the cation diffusion model that accounts for the experimental results on the kinetics of the process is critically examined. Since many synthesis routes rely on the formation of monodisperse magnetite NPs via oxidation of wüstite counterparts, the modulation of their physical properties by crystal defects arising from the oxidation process is also described. Finally, the importance of a precise control of the composition and structure of magnetite-based NPs is discussed and its role in their biomedical applications is highlighted.
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Affiliation(s)
- Gabriel C Lavorato
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 16, Suc. 4, 1900 La Plata, Argentina
| | - Adriele A de Almeida
- Instituto de Física 'Gleb Wataghin' (IFGW), Universidade Estadual de Campinas-UNICAMP, R. Sérgio Buarque de Holanda, 777-CEP: 13083-859, Campinas - SP, Brazil
| | - Carolina Vericat
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 16, Suc. 4, 1900 La Plata, Argentina
| | - Mariano H Fonticelli
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C. C. 16, Suc. 4, 1900 La Plata, Argentina
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4
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Getting insight into how iron(III) oleate precursors affect the features of magnetite nanoparticles. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Castellanos-Rubio I, Arriortua O, Iglesias-Rojas D, Barón A, Rodrigo I, Marcano L, Garitaonandia JS, Orue I, Fdez-Gubieda ML, Insausti M. A Milestone in the Chemical Synthesis of Fe 3O 4 Nanoparticles: Unreported Bulklike Properties Lead to a Remarkable Magnetic Hyperthermia. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2021; 33:8693-8704. [PMID: 34853492 PMCID: PMC8619619 DOI: 10.1021/acs.chemmater.1c02654] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/16/2021] [Indexed: 05/22/2023]
Abstract
Among iron oxide phases, magnetite (Fe3O4) is often the preferred one for nanotechnological and biomedical applications because of its high saturation magnetization and low toxicity. Although there are several synthetic routes that attempt to reach magnetite nanoparticles (NPs), they are usually referred as "IONPs" (iron oxide NPs) due to the great difficulty in obtaining the monophasic and stoichiometric Fe3O4 phase. Added to this problem is the common increase of size/shape polydispersity when larger NPs (D > 20 nm) are synthesized. An unequivocal correlation between a nanomaterial and its properties can only be achieved by the production of highly homogeneous systems, which, in turn, is only possible by the continuous improvement of synthesis methods. There is no doubt that solving the compositional heterogeneity of IONPs while keeping them monodisperse remains a challenge for synthetic chemistry. Herein, we present a methodical optimization of the iron oleate decomposition method to obtain Fe3O4 single nanocrystals without any trace of secondary phases and with no need of postsynthetic treatment. The average dimension of the NPs, ranging from 20 to 40 nm, has been tailored by adjusting the total volume and the boiling point of the reaction mixture. Mössbauer spectroscopy and DC magnetometry have revealed that the NPs present a perfectly stoichiometric Fe3O4 phase. The high saturation magnetization (93 (2) A·m2/kg at RT) and the extremely sharp Verwey transition (at around 120 K) shown by these NPs have no precedent. Moreover, the synthesis method has been refined to obtain NPs with octahedral morphology and suitable magnetic anisotropy, which significantly improves the magnetic hyperthemia performance. The heating power of properly PEGylated nano-octahedrons has been investigated by AC magnetometry, confirming that the NPs present negligible dipolar interactions, which leads to an outstanding magnetothermal efficiency that does not change when the NPs are dispersed in environments with high viscosity and ionic strength. Additionally, the heat production of the NPs within physiological media has been directly measured by calorimetry under clinically safe conditions, reasserting the excellent adequacy of the system for hyperthermia therapies. To the best of our knowledge, this is the first time that such bulklike magnetite NPs (with minimal size/shape polydispersity, minor agglomeration, and exceptional heating power) are chemically synthesized.
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Affiliation(s)
- Idoia Castellanos-Rubio
- Dpto.
Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Oihane Arriortua
- Dpto.
Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Daniela Iglesias-Rojas
- Dpto.
Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Ander Barón
- Dpto.
Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Irati Rodrigo
- Dpto.
Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- BC
Materials, Basque Center for Materials, Applications and Nanostructures, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Lourdes Marcano
- Dpto.
Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- Helmholtz-Zentrum
Berlin für Materialien und Energie, Albert-Einstein-Str.15, 12489 Berlin, Germany
| | - José S. Garitaonandia
- Dpto.
Física Aplicada II, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Iñaki Orue
- SGIker, Servicios
Generales de Investigación, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - M. Luisa Fdez-Gubieda
- Dpto.
Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- BC
Materials, Basque Center for Materials, Applications and Nanostructures, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Maite Insausti
- Dpto.
Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- BC
Materials, Basque Center for Materials, Applications and Nanostructures, Barrio Sarriena s/n, 48940 Leioa, Spain
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6
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Bulbucan C, Preger C, Kostanyan A, Jensen KMØ, Kokkonen E, Piamonteze C, Messing ME, Westerström R. Large exchange bias in Cr substituted Fe 3O 4 nanoparticles with FeO subdomains. NANOSCALE 2021; 13:15844-15852. [PMID: 34518859 PMCID: PMC8485415 DOI: 10.1039/d1nr04614d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
Tuning the anisotropy through exchange bias in bimagnetic nanoparticles is an active research strategy for enhancing and tailoring the magnetic properties for a wide range of applications. Here we present a structural and magnetic characterization of unique FeCr-oxide nanoparticles generated from seed material with a Fe : Cr ratio of 4.71 : 1 using a physical aerosol method based on spark ablation. The nanoparticles have a novel bimagnetic structure composed of a 40 nm ferrimagnetic Cr-substituted Fe3O4 structure with 4 nm antiferromagnetic FexO subdomains. Cooling in an applied magnetic field across the Néel temperature of the FexO subdomains results in a significant shift in the hysteresis, demonstrating the presence of a large exchange bias. The observed shift of μ0HE = 460 mT is among the largest values reported for FexO-Fe3O4-based nanoparticles and is attributed to the large antiferromagnetic-ferrimagnetic interface area provided by the subdomains.
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Affiliation(s)
- Claudiu Bulbucan
- NanoLund, Lund University, Box 118, 22100 Lund, Sweden
- Synchrotron radiation research, Lund University, SE-22100 Lund, Sweden.
| | - Calle Preger
- NanoLund, Lund University, Box 118, 22100 Lund, Sweden
- Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden
| | - Aram Kostanyan
- Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | | | - Esko Kokkonen
- MAX IV Laboratory, Lund University, PO Box 118, 221 00, Lund, Sweden
| | - Cinthia Piamonteze
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Maria E Messing
- NanoLund, Lund University, Box 118, 22100 Lund, Sweden
- Synchrotron radiation research, Lund University, SE-22100 Lund, Sweden.
- Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden
| | - Rasmus Westerström
- NanoLund, Lund University, Box 118, 22100 Lund, Sweden
- Synchrotron radiation research, Lund University, SE-22100 Lund, Sweden.
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7
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Lak A, Disch S, Bender P. Embracing Defects and Disorder in Magnetic Nanoparticles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002682. [PMID: 33854879 PMCID: PMC8025001 DOI: 10.1002/advs.202002682] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/30/2020] [Indexed: 05/22/2023]
Abstract
Iron oxide nanoparticles have tremendous scientific and technological potential in a broad range of technologies, from energy applications to biomedicine. To improve their performance, single-crystalline and defect-free nanoparticles have thus far been aspired. However, in several recent studies, defect-rich nanoparticles outperform their defect-free counterparts in magnetic hyperthermia and magnetic particle imaging (MPI). Here, an overview on the state-of-the-art of design and characterization of defects and resulting spin disorder in magnetic nanoparticles is presented with a focus on iron oxide nanoparticles. The beneficial impact of defects and disorder on intracellular magnetic hyperthermia performance of magnetic nanoparticles for drug delivery and cancer therapy is emphasized. Defect-engineering in iron oxide nanoparticles emerges to become an alternative approach to tailor their magnetic properties for biomedicine, as it is already common practice in established systems such as semiconductors and emerging fields including perovskite solar cells. Finally, perspectives and thoughts are given on how to deliberately induce defects in iron oxide nanoparticles and their potential implications for magnetic tracers to monitor cell therapy and immunotherapy by MPI.
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Affiliation(s)
- Aidin Lak
- Department of Physics and Center for NanoScienceLMU MunichAmalienstr. 54Munich80799Germany
| | - Sabrina Disch
- Department für ChemieUniversität zu KölnGreinstraße 4‐6Köln50939Germany
| | - Philipp Bender
- Department of Physics and Materials ScienceUniversity of Luxembourg162A avenue de la FaÏencerieLuxembourgL‐1511Grand Duchy of Luxembourg
- Present address:
Heinz Maier‐Leibnitz Zentrum (MLZ)Technische Universität MünchenD‐85748GarchingGermany
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8
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Avugadda SK, Wickramasinghe S, Niculaes D, Ju M, Lak A, Silvestri N, Nitti S, Roy I, Samia ACS, Pellegrino T. Uncovering the Magnetic Particle Imaging and Magnetic Resonance Imaging Features of Iron Oxide Nanocube Clusters. NANOMATERIALS 2020; 11:nano11010062. [PMID: 33383768 PMCID: PMC7824301 DOI: 10.3390/nano11010062] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 02/07/2023]
Abstract
Multifunctional imaging nanoprobes continue to garner strong interest for their great potential in the detection and monitoring of cancer. In this study, we investigate a series of spatially arranged iron oxide nanocube-based clusters (i.e., chain-like dimer/trimer, centrosymmetric clusters, and enzymatically cleavable two-dimensional clusters) as magnetic particle imaging and magnetic resonance imaging probes. Our findings demonstrate that the short nanocube chain assemblies exhibit remarkable magnetic particle imaging signal enhancement with respect to the individually dispersed or the centrosymmetric cluster analogues. This result can be attributed to the beneficial uniaxial magnetic dipolar coupling occurring in the chain-like nanocube assembly. Moreover, we could effectively synthesize enzymatically cleavable two-dimensional nanocube clusters, which upon exposure to a lytic enzyme, exhibit a progressive increase in magnetic particle imaging signal at well-defined incubation time points. The increase in magnetic particle imaging signal can be used to trace the disassembly of the large planar clusters into smaller nanocube chains by enzymatic polymer degradation. These studies demonstrate that chain-like assemblies of iron oxide nanocubes offer the best spatial arrangement to improve magnetic particle imaging signals. In addition, the nanocube clusters synthesized in this study also show remarkable transverse magnetic resonance imaging relaxation signals. These nanoprobes, previously showcased for their outstanding heat performance in magnetic hyperthermia applications, have great potential as dual imaging probes and could be employed to improve the tumor thermo-therapeutic efficacy, while offering a readable magnetic signal for image mapping of material disassemblies at tumor sites.
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Affiliation(s)
- Sahitya Kumar Avugadda
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
| | - Sameera Wickramasinghe
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; (S.W.); (M.J.)
| | - Dina Niculaes
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
| | - Minseon Ju
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; (S.W.); (M.J.)
| | - Aidin Lak
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
| | - Niccolò Silvestri
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
| | - Simone Nitti
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
| | - Ipsita Roy
- Department of Materials Science and Engineering, University of Sheffield, Sheffield S10 2 TN, UK;
| | - Anna Cristina S. Samia
- Department of Chemistry, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; (S.W.); (M.J.)
- Correspondence: (A.C.S.S.); (T.P.)
| | - Teresa Pellegrino
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genoa, Italy; (S.K.A.); (D.N.); (A.L.); (N.S.); (S.N.)
- Correspondence: (A.C.S.S.); (T.P.)
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9
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Ebadi M, Bullo S, Buskara K, Hussein MZ, Fakurazi S, Pastorin G. Release of a liver anticancer drug, sorafenib from its PVA/LDH- and PEG/LDH-coated iron oxide nanoparticles for drug delivery applications. Sci Rep 2020; 10:21521. [PMID: 33298980 PMCID: PMC7725814 DOI: 10.1038/s41598-020-76504-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 10/23/2020] [Indexed: 12/18/2022] Open
Abstract
The use of nanocarriers composed of polyethylene glycol- and polyvinyl alcohol-coated vesicles encapsulating active molecules in place of conventional chemotherapy drugs can reduce many of the chemotherapy-associated challenges because of the increased drug concentration at the diseased area in the body. The present study investigated the structure and magnetic properties of iron oxide nanoparticles in the presence of polyvinyl alcohol and polyethylene glycol as the basic surface coating agents. We used superparamagnetic iron oxide nanoparticles (FNPs) as the core and studied their effectiveness when two polymers, namely polyvinyl alcohol (PVA) and polyethylene glycol (PEG), were used as the coating agents together with magnesium-aluminum-layered double hydroxide (MLDH) as the nanocarrier. In addition, the anticancer drug sorafenib (SO), was loaded on MLDH and coated onto the surface of the nanoparticles, to best exploit this nano-drug delivery system for biomedical applications. Samples were prepared by the co-precipitation method, and the resulting formation of the nanoparticles was confirmed by X-ray, FTIR, TEM, SEM, DLS, HPLC, UV-Vis, TGA and VSM. The X-ray diffraction results indicated that all the as-synthesized samples contained highly crystalline and pure Fe3O4. Transmission electron microscopy analysis showed that the shape of FPEGSO-MLDH nanoparticles was generally spherical, with a mean diameter of 17 nm, compared to 19 nm for FPVASO-MLDH. Fourier transform infrared spectroscopy confirmed the presence of nanocarriers with polymer-coating on the surface of iron oxide nanoparticles and the existence of loaded active drug consisting of sorafenib. Thermogravimetric analyses demonstrated the thermal stability of the nanoparticles, which displayed enhanced anticancer effect after coating. Vibrating sample magnetometer (VSM) curves of both produced samples showed superparamagnetic behavior with the high saturation magnetization of 57 emu/g for FPEGSO-MLDH and 49 emu/g for FPVASO-MLDH. The scanning electron microscopy (SEM) images showed a narrow size distribution of both final samples. The SO drug loading and the release behavior from FPEGSO-MLDH and FPVASO-MLDH were assessed by ultraviolet-visible spectroscopy. This evaluation showed around 85% drug release within 72 h, while 74% of sorafenib was released in phosphate buffer solution at pH 4.8. The release profiles of sorafenib from the two designed samples were found to be sustained according to pseudo-second-order kinetics. The cytotoxicity studies confirmed the anti-cancer activity of the coated nanoparticles loaded with SO against liver cancer cells, HepG2. Conversely, the drug delivery system was less toxic than the pure drug towards fibroblast-type 3T3 cells.
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Affiliation(s)
- Mona Ebadi
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Selangor, Malaysia
| | - Saifullah Bullo
- Department of Linguistic and Human Sciences, Begum Nusrat Bhutto Women University, Sukkur, Sindh, 65200, Pakistan
| | - Kalaivani Buskara
- Laboratory of Vaccine and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Selangor, Malaysia.
| | - Sharida Fakurazi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
- Laboratory of Vaccine and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Giorgia Pastorin
- Department of Pharmacy, National University of Singapore, Singapore, Singapore
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10
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Castellanos-Rubio I, Rodrigo I, Olazagoitia-Garmendia A, Arriortua O, Gil de Muro I, Garitaonandia JS, Bilbao JR, Fdez-Gubieda ML, Plazaola F, Orue I, Castellanos-Rubio A, Insausti M. Highly Reproducible Hyperthermia Response in Water, Agar, and Cellular Environment by Discretely PEGylated Magnetite Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27917-27929. [PMID: 32464047 PMCID: PMC8489799 DOI: 10.1021/acsami.0c03222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Local heat generation from magnetic nanoparticles (MNPs) exposed to alternating magnetic fields can revolutionize cancer treatment. However, the application of MNPs as anticancer agents is limited by serious drawbacks. Foremost among these are the fast uptake and biodegradation of MNPs by cells and the unpredictable magnetic behavior of the MNPs when they accumulate within or around cells and tissues. In fact, several studies have reported that the heating power of MNPs is severely reduced in the cellular environment, probably due to a combination of increased viscosity and strong NP agglomeration. Herein, we present an optimized protocol to coat magnetite (Fe3O4) NPs larger than 20 nm (FM-NPs) with high molecular weight PEG molecules that avoid collective coatings, prevent the formation of large clusters of NPs and keep constant their high heating performance in environments with very different ionic strengths and viscosities (distilled water, physiological solutions, agar and cell culture media). The great reproducibility and reliability of the heating capacity of this FM-NP@PEG system in such different environments has been confirmed by AC magnetometry and by more conventional calorimetric measurements. The explanation of this behavior has been shown to lie in preserving as much as possible the magnetic single domain-type behavior of nearly isolated NPs. In vitro endocytosis experiments in a colon cancer-derived cell line indicate that FM-NP@PEG formulations with PEGs of higher molecular weight (20 kDa) are more resistant to endocytosis than formulations with smaller PEGs (5 kDa), showing quite large uptake mean-life (τ > 5 h) in comparison with other NP systems. The in vitro magnetic hyperthermia was performed at 21 mT and 650 kHz during 1 h in a pre-endocytosis stage and complete cell death was achieved 48 h posthyperthermia. These optimal FM-NP@PEG formulations with high resistance to endocytosis and predictable magnetic response will aid the progress and accuracy of the emerging era of theranostics.
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Affiliation(s)
- Idoia Castellanos-Rubio
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
- Department of Electricidad
y Electrónica, Facultad de Ciencia
y Tecnología, UPV/EHU, Barrio
Sarriena s/n, 48940, Leioa, Spain
- (I.C.-R.)
| | - Irati Rodrigo
- Department of Electricidad
y Electrónica, Facultad de Ciencia
y Tecnología, UPV/EHU, Barrio
Sarriena s/n, 48940, Leioa, Spain
- BC Materials, Basque Center for Materials, Applications, and Nanostructures, Barrio Sarriena s/n, 48940, Leioa, Spain
| | - Ane Olazagoitia-Garmendia
- Departamento de
Genética, Antropología Física y Fisiología
Animal, Facultad de Medicina y Enfermería, Barrio Sarriena s/n, 48940, Leioa, Spain
- Biocruces Bizkaia
Health Research Institute, Cruces Plaza, 48903, Barakaldo, Spain
| | - Oihane Arriortua
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
| | - Izaskun Gil de Muro
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
| | - José S. Garitaonandia
- Departamento de Física
Aplicada II, Facultad de Ciencia y Tecnología,
UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
| | - Jose Ramón Bilbao
- Departamento de
Genética, Antropología Física y Fisiología
Animal, Facultad de Medicina y Enfermería, Barrio Sarriena s/n, 48940, Leioa, Spain
- Biocruces Bizkaia
Health Research Institute, Cruces Plaza, 48903, Barakaldo, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic
Diseases (CIBERDEM), 28029 Madrid, Spain
| | - M. Luisa Fdez-Gubieda
- Department of Electricidad
y Electrónica, Facultad de Ciencia
y Tecnología, UPV/EHU, Barrio
Sarriena s/n, 48940, Leioa, Spain
| | - Fernando Plazaola
- Department of Electricidad
y Electrónica, Facultad de Ciencia
y Tecnología, UPV/EHU, Barrio
Sarriena s/n, 48940, Leioa, Spain
| | - Iñaki Orue
- SGIker, Servicios
Generales de Investigación, UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
| | - Ainara Castellanos-Rubio
- Departamento de
Genética, Antropología Física y Fisiología
Animal, Facultad de Medicina y Enfermería, Barrio Sarriena s/n, 48940, Leioa, Spain
- Biocruces Bizkaia
Health Research Institute, Cruces Plaza, 48903, Barakaldo, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic
Diseases (CIBERDEM), 28029 Madrid, Spain
- IKERBASQUE Basque Foundation for Science, 48013, Bilbao, Spain
| | - Maite Insausti
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Barrio Sarriena s/n, 48940, Leioa, Spain
- BC Materials, Basque Center for Materials, Applications, and Nanostructures, Barrio Sarriena s/n, 48940, Leioa, Spain
- (M.I.)
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11
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Mai BT, Barthel MJ, Lak A, Avellini T, Panaite AM, Rodrigues EM, Goldoni L, Pellegrino T. Photo-induced copper mediated copolymerization of activated-ester methacrylate polymers and their use as reactive precursors to prepare multi-dentate ligands for the water transfer of inorganic nanoparticles. Polym Chem 2020. [DOI: 10.1039/d0py00212g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Polymers bearing activated ester groups are synthesized using photo-ATRP and used as precursors for direct synthesis of multi-phosphonic acid functionalized ligands which are able to transfer different nanoparticles with distinct cores into water.
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Affiliation(s)
- Binh T. Mai
- Istituto Italiano di Tecnologia (IIT)
- 16163 Genoa
- Italy
| | | | - Aidin Lak
- Istituto Italiano di Tecnologia (IIT)
- 16163 Genoa
- Italy
| | | | | | | | - Luca Goldoni
- Istituto Italiano di Tecnologia (IIT)
- 16163 Genoa
- Italy
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12
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Hormozi N, Esmaeili A. Synthesis and correction of albumin magnetic nanoparticles with organic compounds for absorbing and releasing doxorubicin hydrochloride. Colloids Surf B Biointerfaces 2019; 182:110368. [DOI: 10.1016/j.colsurfb.2019.110368] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 06/13/2019] [Accepted: 07/14/2019] [Indexed: 01/11/2023]
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13
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Castellanos-Rubio I, Rodrigo I, Munshi R, Arriortua O, Garitaonandia JS, Martinez-Amesti A, Plazaola F, Orue I, Pralle A, Insausti M. Outstanding heat loss via nano-octahedra above 20 nm in size: from wustite-rich nanoparticles to magnetite single-crystals. NANOSCALE 2019; 11:16635-16649. [PMID: 31460555 DOI: 10.1039/c9nr04970c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Most studies on magnetic nanoparticle-based hyperthermia utilize iron oxide nanoparticles smaller than 20 nm, which are intended to have superparamagnetic behavior (SP-MNPs). However, the heating power of larger magnetic nanoparticles with non-fluctuating or fixed magnetic dipoles (F-MNPs) can be significantly greater than that of SP-MNPs if high enough fields (H > 15 mT) are used. But the synthesis of larger single nanocrystals of magnetite (Fe3O4) with a regular shape and narrow size distribution devoid of secondary phases remains a challenge. Iron oxide nanoparticles, grown over 25 nm, often present large shape and size polydispersities, twinning defects and a significant fraction of the wüstite-type (FeO) paramagnetic phase, resulting in degradation of magnetic properties. Herein, we introduce an improved procedure to synthesize monodisperse F-MNPs in the range of 25 to 50 nm with a distinct octahedral morphology and very crystalline magnetite phase. We unravel the subtle phase transformation that takes place during the synthesis by a thorough study in several non-optimized nanoparticles presenting a core-shell structure or composed of magnetite-type clusters embedded in a wüstite lattice. Optimized magnetite samples present a slight decrease in the saturation magnetization compared to bulk magnetite, which is successfully explained by the presence of Fe2+ vacancies. However, due to the high quality of these samples, AC magnetometry measurements have shown excellent specific absorption rates (>1000 W gFe3O4-1 at 40 mT and 300 kHz). Most importantly, the magnetic response and the hyperthermia performance of properly coated F-MNPs are kept basically unaltered in media with very different viscosities and ionic strength. Finally, using a physical model based on single magnetic domain approaches, we derive a novel connection between the octahedral shape and the high hyperthermia performance.
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Affiliation(s)
- Idoia Castellanos-Rubio
- Dpto. Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain.
| | - Irati Rodrigo
- Dpto. Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain and BC Materials, Basque Center for Materials, Applications and Nanostructures, Sarriena s/n, 48940 Leioa, Spain
| | - Rahul Munshi
- Department of Physics, University at Buffalo, Buffalo, New York 14260, USA
| | - Oihane Arriortua
- Dpto. Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain.
| | - José S Garitaonandia
- Dpto. Física Aplicada II, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain
| | - Ana Martinez-Amesti
- SGIker, Servicios Generales de Investigación, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain
| | - Fernando Plazaola
- Dpto. Electricidad y Electrónica, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain
| | - Iñaki Orue
- SGIker, Servicios Generales de Investigación, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain
| | - Arnd Pralle
- Department of Physics, University at Buffalo, Buffalo, New York 14260, USA
| | - Maite Insausti
- Dpto. Química Inorgánica, Facultad de Ciencia y Tecnología, UPV/EHU, Sarriena s/n, 48940 Leioa, Spain. and BC Materials, Basque Center for Materials, Applications and Nanostructures, Sarriena s/n, 48940 Leioa, Spain
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14
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Testa-Anta M, Ramos-Docampo MA, Comesaña-Hermo M, Rivas-Murias B, Salgueiriño V. Raman spectroscopy to unravel the magnetic properties of iron oxide nanocrystals for bio-related applications. NANOSCALE ADVANCES 2019; 1:2086-2103. [PMID: 36131987 PMCID: PMC9418671 DOI: 10.1039/c9na00064j] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/22/2019] [Indexed: 05/05/2023]
Abstract
Iron oxide nanocrystals have become a versatile tool in biomedicine because of their low cytotoxicity while offering a wide range of tuneable magnetic properties that may be implemented in magnetic separation, drug and heat delivery and bioimaging. These capabilities rely on the unique magnetic features obtained when combining different iron oxide phases, so that an important portfolio of magnetic properties can be attained by the rational design of multicomponent nanocrystals. In this context, Raman spectroscopy is an invaluable and fast-performance tool to gain insight into the different phases forming part of the nanocrystals to be used, allowing correlation of the magnetic properties with the envisaged bio-related applications.
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Affiliation(s)
- Martín Testa-Anta
- Departamento de Física Aplicada, Universidade de Vigo 36310 Vigo Spain
| | | | - Miguel Comesaña-Hermo
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086 75013 Paris France
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15
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Lak A, Cassani M, Mai BT, Winckelmans N, Cabrera D, Sadrollahi E, Marras S, Remmer H, Fiorito S, Cremades-Jimeno L, Litterst FJ, Ludwig F, Manna L, Teran FJ, Bals S, Pellegrino T. Fe 2+ Deficiencies, FeO Subdomains, and Structural Defects Favor Magnetic Hyperthermia Performance of Iron Oxide Nanocubes into Intracellular Environment. NANO LETTERS 2018; 18:6856-6866. [PMID: 30336062 DOI: 10.1021/acs.nanolett.8b02722] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Herein, by studying a stepwise phase transformation of 23 nm FeO-Fe3O4 core-shell nanocubes into Fe3O4, we identify a composition at which the magnetic heating performance of the nanocubes is not affected by the medium viscosity and aggregation. Structural and magnetic characterizations reveal the transformation of the FeO-Fe3O4 nanocubes from having stoichiometric phase compositions into Fe2+-deficient Fe3O4 phases. The resultant nanocubes contain tiny compressed and randomly distributed FeO subdomains as well as structural defects. This phase transformation causes a 10-fold increase in the magnetic losses of the nanocubes, which remain exceptionally insensitive to the medium viscosity as well as aggregation unlike similarly sized single-phase magnetite nanocubes. We observe that the dominant relaxation mechanism switches from Néel in fresh core-shell nanocubes to Brownian in partially oxidized nanocubes and once again to Néel in completely treated nanocubes. The Fe2+ deficiencies and structural defects appear to reduce the magnetic energy barrier and anisotropy field, thereby driving the overall relaxation into Néel process. The magnetic losses of these nanoparticles remain unchanged through a progressive internalization/association to ovarian cancer cells. Moreover, the particles induce a significant cell death after being exposed to hyperthermia treatment. Here, we present the largest heating performance that has been reported to date for 23 nm iron oxide nanoparticles under intracellular conditions. Our findings clearly demonstrate the positive impacts of the Fe2+ deficiencies and structural defects in the Fe3O4 structure on the heating performance into intracellular environment.
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Affiliation(s)
- Aidin Lak
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | - Marco Cassani
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | - Binh T Mai
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | - Naomi Winckelmans
- EMAT , University of Antwerp , Groenenborgerlaan 171 , B-2020 Antwerp , Belgium
| | - David Cabrera
- iMdea Nanociencia , Campus Universitario de Cantoblanco , 28049 Madrid , Spain
| | - Elaheh Sadrollahi
- Institute for Condensed Matter Physics , Technische Universität Braunschweig , Mendelssohn-Str. 3 , 38106 Braunschweig , Germany
| | - Sergio Marras
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | - Hilke Remmer
- Institute for Electrical Measurement Science and Fundamental Electrical Engineering , Technische Universität Braunschweig , Hans-Sommer-Str. 66 , 38106 Braunschweig , Germany
| | - Sergio Fiorito
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | | | - Fred Jochen Litterst
- Institute for Condensed Matter Physics , Technische Universität Braunschweig , Mendelssohn-Str. 3 , 38106 Braunschweig , Germany
| | - Frank Ludwig
- Institute for Electrical Measurement Science and Fundamental Electrical Engineering , Technische Universität Braunschweig , Hans-Sommer-Str. 66 , 38106 Braunschweig , Germany
| | - Liberato Manna
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
| | - Francisco J Teran
- iMdea Nanociencia , Campus Universitario de Cantoblanco , 28049 Madrid , Spain
- Nanobiotecnología (iMdea Nanociencia) , Unidad Asociada al Centro Nacional de Biotecnología (CSIC) , 28049 Madrid , Spain
| | - Sara Bals
- EMAT , University of Antwerp , Groenenborgerlaan 171 , B-2020 Antwerp , Belgium
| | - Teresa Pellegrino
- Istituto Italiano di Tecnologia , via Morego 30 , 16163 Genoa , Italy
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16
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Testa-Anta M, Liébana-Viñas S, Rivas-Murias B, Rodríguez González B, Farle M, Salgueiriño V. Shaping iron oxide nanocrystals for magnetic separation applications. NANOSCALE 2018; 10:20462-20467. [PMID: 30379181 DOI: 10.1039/c8nr05864d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Iron oxide nanostructures are attractive for a variety of bio-related applications given their wide range of magnetic properties. Here, we report on the study of the magnetophoretic mobility of octapod-shaped nanocrystals, which we relate to stoichiometry, quality and elongation in the 111 direction of these cubic structures. This special morphology combines magnetocrystalline anisotropies, increases shape anisotropy and hinders the formation of an epitaxial wüstite-magnetite interface. As a result, one obtains nanocrystals with large magnetic susceptibility and small coercivity, that is, with optimum characteristics for magnetic guidance, separation, and drug delivery, due to the increased magnetophoretic mobility displayed.
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Affiliation(s)
- Martín Testa-Anta
- Departamento de Física Aplicada, Universidade de Vigo, 36310 Vigo, Spain.
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17
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Ichikawa RU, Roca AG, López-Ortega A, Estrader M, Peral I, Turrillas X, Nogués J. Combining X-Ray Whole Powder Pattern Modeling, Rietveld and Pair Distribution Function Analyses as a Novel Bulk Approach to Study Interfaces in Heteronanostructures: Oxidation Front in FeO/Fe 3 O 4 Core/Shell Nanoparticles as a Case Study. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800804. [PMID: 29952138 DOI: 10.1002/smll.201800804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/08/2018] [Indexed: 06/08/2023]
Abstract
Understanding the microstructure in heterostructured nanoparticles is crucial to harnessing their properties. Although microscopy is ideal for this purpose, it allows for the analysis of only a few nanoparticles. Thus, there is a need for structural methods that take the whole sample into account. Here, a novel bulk-approach based on the combined analysis of synchrotron X-ray powder diffraction with whole powder pattern modeling, Rietveld and pair distribution function is presented. The microstructural temporal evolution of FeO/Fe3 O4 core/shell nanocubes is studied at different time intervals. The results indicate that a two-phase approach (FeO and Fe3 O4 ) is not sufficient to successfully fit the data and two additional interface phases (FeO and Fe3 O4 ) are needed to obtain satisfactory fits, i.e., an onion-type structure. The analysis shows that the Fe3 O4 phases grow to some extent (≈1 nm) at the expense of the FeO core. Moreover, the FeO core progressively changes its stoichiometry to accommodate more oxygen. The temporal evolution of the parameters indicates that the structure of the FeO/Fe3 O4 nanocubes is rather stable, although the exact interface structure slightly evolves with time. This approach paves the way for average studies of interfaces in different kinds of heterostructured nanoparticles, particularly in cases where spectroscopic methods have some limitations.
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Affiliation(s)
- Rodrigo U Ichikawa
- IPEN-Instituto de Pesquisas Energéticas e Nucleares, Av. Prof. Lineu Prestes, 2242 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Alejandro G Roca
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST,, Campus UAB, Bellaterra, E-08193, Barcelona, Spain
| | | | - Marta Estrader
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST,, Campus UAB, Bellaterra, E-08193, Barcelona, Spain
| | - Inma Peral
- ALBA Synchrotron, Carrer de la Llum, 2-26, Cerdanyola del Vallés, E-08290, Barcelona, Spain
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511, Luxembourg, Luxembourg
- Materials Research and Technology Department, Luxembourg Institute of Science and Technology, L-4422, Belvaux, Luxembourg
| | - Xabier Turrillas
- ALBA Synchrotron, Carrer de la Llum, 2-26, Cerdanyola del Vallés, E-08290, Barcelona, Spain
- Institut de Ciència de Materials de Barcelona- CSIC, UAB Campus, Cerdanyola del Vallès, E-08193, Barcelona, Spain
| | - Josep Nogués
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST,, Campus UAB, Bellaterra, E-08193, Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, E-08010, Barcelona, Spain
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18
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Alkaline Metal Reagent-Assisted Synthesis of Monodisperse Iron Oxide Nanostructures. METALS 2018. [DOI: 10.3390/met8020107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Niculaes D, Lak A, Anyfantis GC, Marras S, Laslett O, Avugadda SK, Cassani M, Serantes D, Hovorka O, Chantrell R, Pellegrino T. Asymmetric Assembling of Iron Oxide Nanocubes for Improving Magnetic Hyperthermia Performance. ACS NANO 2017; 11:12121-12133. [PMID: 29155560 PMCID: PMC6097834 DOI: 10.1021/acsnano.7b05182] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 11/20/2017] [Indexed: 05/20/2023]
Abstract
Magnetic hyperthermia (MH) based on magnetic nanoparticles (MNPs) is a promising adjuvant therapy for cancer treatment. Particle clustering leading to complex magnetic interactions affects the heat generated by MNPs during MH. The heat efficiencies, theoretically predicted, are still poorly understood because of a lack of control of the fabrication of such clusters with defined geometries and thus their functionality. This study aims to correlate the heating efficiency under MH of individually coated iron oxide nanocubes (IONCs) versus soft colloidal nanoclusters made of small groupings of nanocubes arranged in different geometries. The controlled clustering of alkyl-stabilized IONCs is achieved here during the water transfer procedure by tuning the fraction of the amphiphilic copolymer, poly(styrene-co-maleic anhydride) cumene-terminated, to the nanoparticle surface. It is found that increasing the polymer-to-nanoparticle surface ratio leads to the formation of increasingly large nanoclusters with defined geometries. When compared to the individual nanocubes, we show here that controlled grouping of nanoparticles-so-called "dimers" and "trimers" composed of two and three nanocubes, respectively-increases specific absorption rate (SAR) values, while conversely, forming centrosymmetric clusters having more than four nanocubes leads to lower SAR values. Magnetization measurements and Monte Carlo-based simulations support the observed SAR trend and reveal the importance of the dipolar interaction effect and its dependence on the details of the particle arrangements within the different clusters.
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Affiliation(s)
- Dina Niculaes
- Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento di Chimica e Chimica Industriale,
Università di Genova, Via Dodecaneso 31, 16146 Genova,
Italy
| | - Aidin Lak
- Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
| | | | - Sergio Marras
- Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Oliver Laslett
- Engineering and the Environment, University
of Southampton, Southampton SO16 7QF, United
Kingdom
| | - Sahitya K. Avugadda
- Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento di Chimica e Chimica Industriale,
Università di Genova, Via Dodecaneso 31, 16146 Genova,
Italy
| | - Marco Cassani
- Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento di Chimica e Chimica Industriale,
Università di Genova, Via Dodecaneso 31, 16146 Genova,
Italy
| | - David Serantes
- Applied Physics Department and Instituto de
Investigacións Tecnolóxicas, Universidade de Santiago de
Compostela, 15782 Santiago de Compostela, Spain
| | - Ondrej Hovorka
- Engineering and the Environment, University
of Southampton, Southampton SO16 7QF, United
Kingdom
| | - Roy Chantrell
- Department of Physics, University of
York, York YO10 5DD, United Kingdom
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20
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Phan MH, Alonso J, Khurshid H, Lampen-Kelley P, Chandra S, Stojak Repa K, Nemati Z, Das R, Iglesias Ó, Srikanth H. Exchange Bias Effects in Iron Oxide-Based Nanoparticle Systems. NANOMATERIALS 2016; 6:nano6110221. [PMID: 28335349 PMCID: PMC5245749 DOI: 10.3390/nano6110221] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/29/2016] [Accepted: 11/02/2016] [Indexed: 11/16/2022]
Abstract
The exploration of exchange bias (EB) on the nanoscale provides a novel approach to improving the anisotropic properties of magnetic nanoparticles for prospective applications in nanospintronics and nanomedicine. However, the physical origin of EB is not fully understood. Recent advances in chemical synthesis provide a unique opportunity to explore EB in a variety of iron oxide-based nanostructures ranging from core/shell to hollow and hybrid composite nanoparticles. Experimental and atomistic Monte Carlo studies have shed light on the roles of interface and surface spins in these nanosystems. This review paper aims to provide a thorough understanding of the EB and related phenomena in iron oxide-based nanoparticle systems, knowledge of which is essential to tune the anisotropic magnetic properties of exchange-coupled nanoparticle systems for potential applications.
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Affiliation(s)
- Manh-Huong Phan
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
| | - Javier Alonso
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
- BCMaterials Building 500, Bizkaia Science and Technology Park, 48160 Derio, Spain.
| | - Hafsa Khurshid
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
| | | | - Sayan Chandra
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
| | | | - Zohreh Nemati
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
| | - Raja Das
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
| | - Óscar Iglesias
- Department of Fundamental Physics and Institute of Nanoscience and Nanotechnology (In2UB), University of Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain.
| | - Hariharan Srikanth
- Department of Physics, University of South Florida, Tampa, FL 33620, USA.
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