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Botez CE, Mussslewhite Z. Evidence of Individual Superspin Relaxation in Diluted Fe 3O 4/Hexane Ferrofluids. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4850. [PMID: 37445163 DOI: 10.3390/ma16134850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
We used dc magnetization and ac susceptibility to investigate the magnetic relaxation of ferrofluids made of 8 nm average-diameter Fe3O4 nanoparticles dispersed in hexane. Samples of different concentrations (δ) spanning two orders of magnitude ranging from 0.66 to 0.005 mg (Fe3O4)/mL (hexane) were used to vary the interparticle interaction strength. Our data reveal a critical concentration, δc = 0.02 mg/mL, below which the ferrofluid behaves like an ideal nanoparticle ensemble where the superspins relax individually according to a Néel-Brown activation law τ(T) =τ0expEBkBT with a characteristic time τo ~10-9 s. That is further confirmed by the observed invariance of the relative peak temperature variation per frequency decade ∆=∆TT·∆log(f), which stays constant at ~0.185 when δ < δc. At higher concentrations, between 0.02 and 0.66 mg/mL, we found that Δ exhibits a monotonic increase with the inverse concentration, 1δ, and the collective superspin dynamics is described by a Vogel-Fulcher law, τ(T) =τ0expEBkBT-T0. Within this regime, the dipolar interaction strength parameter T0 increases from T0 = 0 K at δc = 0.02 mg/mL to T0 = 14.7 K at δ = 0.66 mg/mL.
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Affiliation(s)
- Cristian E Botez
- Department of Physics and Astronomy, University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249, USA
- Department of Physics, University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Zachary Mussslewhite
- Department of Physics and Astronomy, University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249, USA
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2
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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: 5] [Impact Index Per Article: 5.0] [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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3
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Besenhard MO, Pal S, Gkogkos G, Gavriilidis A. Non-fouling flow reactors for nanomaterial synthesis. REACT CHEM ENG 2023. [DOI: 10.1039/d2re00412g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This review provides a holistic description of flow reactor fouling for wet-chemical nanomaterial syntheses. Fouling origins and consequences are discussed together with the variety of flow reactors for its prevention.
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Affiliation(s)
| | - Sayan Pal
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Georgios Gkogkos
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Asterios Gavriilidis
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
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4
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Ni Nanoparticles Stabilized by Hyperbranched Polymer: Does the Architecture of the Polymer Affect the Nanoparticle Characteristics and Their Performance in Catalysis? Int J Mol Sci 2022; 23:ijms232213874. [PMID: 36430353 PMCID: PMC9696000 DOI: 10.3390/ijms232213874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/12/2022] Open
Abstract
Heat-up and hot-injection methods were employed to synthesize Ni nanoparticles (NPs) with narrow size distribution in the presence of hyperbranched pyridylphenylene polymer (PPP) as a stabilizing agent. It was shown that depending on the synthetic method, Ni NPs were formed either in a cross-linked polymer network or stabilized by a soluble hyperbranched polymer. Ni NPs were characterized by a combination of transmission electron microscopy (TEM), scanning TEM, thermogravimetric analysis, powder X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive X-ray analysis, and magnetic measurements. The architecture of polymer support was found to significantly effect Ni NPs characteristics and behavior. The Ni NPs demonstrated a high catalytic activity in a model Suzuki-Miyaura cross-coupling reaction. No significant drop in activity was observed upon repeated use after magnetic separation in five consecutive catalytic cycles. We believe that hyperbranched PPP can serve as universal platform for the controllable synthesis of Ni NPs, acting as highly active and stable catalysts.
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Koryakina IG, Afonicheva PK, Arabuli KV, Evstrapov AA, Timin AS, Zyuzin MV. Microfluidic synthesis of optically responsive materials for nano- and biophotonics. Adv Colloid Interface Sci 2021; 298:102548. [PMID: 34757247 DOI: 10.1016/j.cis.2021.102548] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 02/06/2023]
Abstract
Recently, nanomaterials demonstrating optical response under illumination, the so-called optically responsive nanoparticles (NPs), have found their broad application as optical switchers, gas adsorbents, data storage devices, and optical and biological sensors. Unique optical properties of such nanomaterials are strongly related to their chemical composition, geometrical parameters and morphology. Microfluidic approaches for NPs' synthesis allow overcoming the known critical stages in conventional synthesis of NPs due to a high rate of heat/mass transfer and precise regulation of synthesis conditions, which results in reproducible synthesis outcomes with the desired physico-chemical properties. Here, we review the recent advances in microfluidic approach for synthesis of optically responsive nanomaterials (plasmonic, photoluminescent, shape-changeable NPs), highlighting the general background of microfluidics, common considerations in the design of microfluidic chips (MFCs), and theoretical models of the NPs' formation mechanisms. Comparative analysis of microfluidic synthesis with conventional synthesis methods is provided further, along with the recent applications of optically responsive NPs in nano- and biophotonics.
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6
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Nguyen MD, Tran HV, Xu S, Lee TR. Fe 3O 4 Nanoparticles: Structures, Synthesis, Magnetic Properties, Surface Functionalization, and Emerging Applications. APPLIED SCIENCES (BASEL, SWITZERLAND) 2021; 11:11301. [PMID: 35844268 PMCID: PMC9285867 DOI: 10.3390/app112311301] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Magnetite (Fe3O4) nanoparticles (NPs) are attractive nanomaterials in the field of material science, chemistry, and physics because of their valuable properties, such as soft ferromagnetism, half-metallicity, and biocompatibility. Various structures of Fe3O4 NPs with different sizes, geometries, and nanoarchitectures have been synthesized, and the related properties have been studied with targets in multiple fields of applications, including biomedical devices, electronic devices, environmental solutions, and energy applications. Tailoring the sizes, geometries, magnetic properties, and functionalities is an important task that determines the performance of Fe3O4 NPs in many applications. Therefore, this review focuses on the crucial aspects of Fe3O4 NPs, including structures, synthesis, magnetic properties, and strategies for functionalization, which jointly determine the application performance of various Fe3O4 NP-based systems. We first summarize the recent advances in the synthesis of magnetite NPs with different sizes, morphologies, and magnetic properties. We also highlight the importance of synthetic factors in controlling the structures and properties of NPs, such as the uniformity of sizes, morphology, surfaces, and magnetic properties. Moreover, emerging applications using Fe3O4 NPs and their functionalized nanostructures are also highlighted with a focus on applications in biomedical technologies, biosensing, environmental remedies for water treatment, and energy storage and conversion devices.
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Affiliation(s)
- Minh Dang Nguyen
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA
| | - Hung-Vu Tran
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA
| | - Shoujun Xu
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA
| | - T. Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA
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7
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Lu C, Han L, Wang J, Wan J, Song G, Rao J. Engineering of magnetic nanoparticles as magnetic particle imaging tracers. Chem Soc Rev 2021; 50:8102-8146. [PMID: 34047311 DOI: 10.1039/d0cs00260g] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Magnetic particle imaging (MPI) has recently emerged as a promising non-invasive imaging technique because of its signal linearly propotional to the tracer mass, ability to generate positive contrast, low tissue background, unlimited tissue penetration depth, and lack of ionizing radiation. The sensitivity and resolution of MPI are highly dependent on the properties of magnetic nanoparticles (MNPs), and extensive research efforts have been focused on the design and synthesis of tracers. This review examines parameters that dictate the performance of MNPs, including size, shape, composition, surface property, crystallinity, the surrounding environment, and aggregation state to provide guidance for engineering MPI tracers with better performance. Finally, we discuss applications of MPI imaging and its challenges and perspectives in clinical translation.
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Affiliation(s)
- Chang Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Linbo Han
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Joanna Wang
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California 94305-5484, USA.
| | - Jiacheng Wan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Guosheng Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Jianghong Rao
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California 94305-5484, USA.
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8
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Kulpa-Greszta M, Tomaszewska A, Dziedzic A, Pązik R. Rapid hot-injection as a tool for control of magnetic nanoparticle size and morphology. RSC Adv 2021; 11:20708-20719. [PMID: 35479344 PMCID: PMC9033954 DOI: 10.1039/d1ra02977k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/20/2021] [Indexed: 12/26/2022] Open
Abstract
The rapid hot-injection (HI) technique was employed to synthesize magnetic nanoparticles with well-defined morphology (octahedrons, cubes, and star-like). It was shown that the proposed synthetic approach could be an alternative for the heat-up and flow hot-injection routes. Instant injection of the precursor to the hot reaction mixture (solvent(s) and additives) at high temperatures promotes fast nucleation and particle directional growth towards specific morphologies. We state that the use of saturated hydrocarbon namely hexadecane (sHD) as a new co-solvent affects the activity coefficient of monomers, forces shape-controllable growth, and allows downsizing of particles. We have shown that the rapid hot-injection route can be extended for other ferrites as well (ZnFe2O4, CoFe2O4, NiFe2O4, and MnFe2O4) which has not been done previously through the HI process before. Rapid hot-injection can be used for precise control of magnetic particle shape.![]()
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Affiliation(s)
- Magdalena Kulpa-Greszta
- Faculty of Chemistry, Rzeszow University of Technology Aleja Powstańców Warszawy 12 35-959 Rzeszow Poland .,Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow Pigonia 1 35-310 Rzeszow Poland
| | - Anna Tomaszewska
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow Pigonia 1 35-310 Rzeszow Poland
| | - Andrzej Dziedzic
- Department of Spectroscopy and Materials, Institute of Physics, College of Natural Sciences, University of Rzeszow Pigonia 1 35-310 Rzeszow Poland
| | - Robert Pązik
- Department of Biotechnology, Institute of Biology and Biotechnology, College of Natural Sciences, University of Rzeszow Pigonia 1 35-310 Rzeszow Poland
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9
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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: 24] [Impact Index Per Article: 8.0] [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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10
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Nayfeh Y, Rizvi SMM, El Far B, Shin D. In Situ Synthesis of Alumina Nanoparticles in a Binary Carbonate Salt Eutectic for Enhancing Heat Capacity. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2131. [PMID: 33120917 PMCID: PMC7692299 DOI: 10.3390/nano10112131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 09/30/2020] [Accepted: 10/23/2020] [Indexed: 11/17/2022]
Abstract
A binary carbonate salt eutectic (Li2CO3-K2CO3)-based nanofluid was in situ synthesized by mixing with a precursor material, aluminum nitrate nonahydrate (Al(NO3)3·9H2O). Thermal decomposition of the precursor was successfully carried out to synthesize alumina (Al2O3) nanoparticles at 1 wt.% concentration. A thermogravimetric analysis (TGA) confirmed a complete thermal decomposition of aluminum nitrate nonahydrate to alumina nanoparticles. A transmission electron microscope (TEM) was employed to confirm the size and shape of the in situ formed nanoparticles; the result showed that they are spherical in shape and the average size was 28.7 nm with a standard deviation of 11.7 nm. Electron dispersive X-ray spectroscopy (EDS) confirmed the observed nanoparticles are alumina nanoparticles. A scanning electron microscope (SEM) was employed to study microstructural changes in the salt. A differential scanning calorimeter (DSC) was employed to study the heat capacity of the in situ synthesized nanofluid. The result showed that the heat capacity was enhanced by 21% at 550 °C in comparison with pure carbonate salt eutectic. About 10-11 °C decrease of the onset melting point of the binary carbonate salt eutectic was observed for the in situ synthesized nanofluids.
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Affiliation(s)
| | | | | | - Donghyun Shin
- School of Engineering and Technology, Central Michigan University, Mt Pleasant, MI 48859, USA; (Y.N.); (S.M.M.R.); (B.E.F.)
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11
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V S H, Balan M, Hosson JTMD, Krishnan G. Vapour confinement as a strategy to fabricate metal and bimetallic nanostructures. NANOSCALE ADVANCES 2020; 2:4251-4260. [PMID: 36132790 PMCID: PMC9418833 DOI: 10.1039/d0na00467g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/01/2020] [Indexed: 05/26/2023]
Abstract
Metal nanostructures have attracted much attention in biomedical, plasmonic, hydrogen storage, and high-energy battery applications. However, the synthesis of various nanostructures of highly reactive elements (e.g. Mg) is still a difficult task and no single-approach has been reported for synthesizing such nanostructures. In this work, we produced magnesium nanoparticles (NPs), nanowires (NWs) and nanoneedles (NNs) in a single-approach, based on thermal evaporation without any carrier gas. Importantly, we employed rapid heating and cooling via a rapid thermal processing (RTP) furnace to control the nucleation and growth of nanostructures. The testing of Zn and Mg-Zn nanostructures was done to validate our approach and design for other metals and bimetallics. Interestingly, Cu and Ag nanoparticles were produced from metal salts (metal acetates and nitrates) with a reasonable control. The tuning of various nanostructures was possible by interplaying (i) with the curvature/outer diameter of the quartz bottle used for evaporation and (ii) by varying the position of the substrates. More specifically, the curvature of the quartz bottle increased the vapour collisions and effectively reduced the thermal energy of the vapour. Altogether, this favoured the control and confinement of vapour onto substrates and achieved supersaturation. Simultaneously, it led to the formation of various nanostructures without any carrier gas. The presented experimental set up is a versatile, simple, single-step and cost-effective solution for producing high-quality nanostructures.
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Affiliation(s)
- Haritha V S
- Department of Physics, University of Kerala Kariayavattom Thiruvananthapuram 695581 India
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham Kochi Kerala 682041 India
| | - Maya Balan
- Amrita Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham Kochi Kerala 682041 India
| | - J Th M De Hosson
- Department of Applied Physics, Zernike Institute for Advanced Materials, Faculty of Science and Engineering, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Gopi Krishnan
- Renjord AS Asbjørn Øverås veg 12 B 7036 Trondheim Norway
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12
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Lak A, Kahmann T, Schaper SJ, Obel J, Ludwig F, Müller-Buschbaum P, Lipfert J. The Dissociation Rate of Acetylacetonate Ligands Governs the Size of Ferrimagnetic Zinc Ferrite Nanocubes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:217-226. [PMID: 31804796 DOI: 10.1021/acsami.9b17714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Magnetic nanoparticles are critical to a broad range of applications from medical diagnostics and therapeutics to biotechnological processes and single-molecule manipulation. To advance these applications, facile and robust routes to synthesize highly magnetic nanoparticles over a wide size range are needed. Here, we demonstrate that changing the degassing temperature of thermal decomposition of metal acetylacetonate precursors from 90 to 25 °C tunes the size of ferrimagnetic ZnxFe3-xO4 nanocubes from 25 to 100 nm, respectively. We show that degassing at 90 °C nearly entirely removes acetylacetone ligands from the reaction, which results in an early formation of monomers and a reaction-controlled growth following LaMer's model toward small nanocubes. In contrast, degassing at 25 °C only partially dissociates acetylacetone ligands from the metal center and triggers a delayed formation of monomers, which leads to intermediate assembled structures made of tiny irregular crystallites and an eventual formation of large nanocubes via a diffusion-controlled growth mechanism. Using complementary techniques, we determine the substitution fraction x of Zn2+ to be in the range of 0.35-0.37. Our method reduces the complexity of the thermal decomposition method by narrowing the synthesis parameter space to a single physical parameter and enables fabrication of highly magnetic and uniform zinc ferrite nanocubes over a broad size range. The resulting particles are promising for a range of applications from magnetic fluid hyperthermia to actuation of macromolecules.
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Affiliation(s)
- Aidin Lak
- Department of Physics and Center for NanoScience , LMU Munich , Amalienstr. 54 , 80799 Munich , Germany
| | - Tamara Kahmann
- Institute for Electrical Measurement Science and Fundamental Electrical Engineering , Technische Universität Braunschweig , Hans-Sommer-Str. 66 , 38106 Braunschweig , Germany
| | - Simon Jakob Schaper
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Jaroslava Obel
- Department of Chemistry and Pharmacy, Analytical Division , LMU Munich , Butenandtstr. 5-13 , 81377 Munich , Germany
| | - Frank Ludwig
- Institute for Electrical Measurement Science and Fundamental Electrical Engineering , Technische Universität Braunschweig , Hans-Sommer-Str. 66 , 38106 Braunschweig , Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Jan Lipfert
- Department of Physics and Center for NanoScience , LMU Munich , Amalienstr. 54 , 80799 Munich , Germany
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13
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Besenhard MO, LaGrow AP, Famiani S, Pucciarelli M, Lettieri P, Thanh NTK, Gavriilidis A. Continuous production of iron oxide nanoparticles via fast and economical high temperature synthesis. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00078g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A continuous, fast and economical high temperature synthesis of iron oxide nanoparticles was developed and compared to a conventional batch synthesis in terms of production costs.
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Affiliation(s)
| | - Alec P. LaGrow
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories
- University College London
- London W1S 4BS
- UK
| | - Simone Famiani
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories
- University College London
- London W1S 4BS
- UK
| | | | - Paola Lettieri
- Department of Chemical Engineering
- University College London
- London
- UK
| | - Nguyen Thi Kim Thanh
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories
- University College London
- London W1S 4BS
- UK
- Biophysics Group
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14
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Characterization of α-Fe2O3 Nanoparticles Prepared from a New [Fe(Ofloxacin)2Cl2] Precursor: A Heterogeneous Photocatalyst for Removal of Methylene Blue and Ciprofloxacin in Water. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01210-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Lachowicz D, Wirecka R, Górka-Kumik W, Marzec MM, Gajewska M, Kmita A, Żukrowski J, Sikora M, Zapotoczny S, Bernasik A. Gradient of zinc content in core–shell zinc ferrite nanoparticles – precise study on composition and magnetic properties. Phys Chem Chem Phys 2019; 21:23473-23484. [DOI: 10.1039/c9cp03591e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Structure, magnetic properties and chemical composition of synthesized zinc ferrite nanoparticles were characterized by a broad spectrum of methods.
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Affiliation(s)
- Dorota Lachowicz
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Roma Wirecka
- AGH University of Science and Technology
- Faculty of Physics and Applied Computer Science
- 30-059 Krakow
- Poland
| | - Weronika Górka-Kumik
- Faculty of Physics
- Astronomy and Applied Computer Science
- Jagiellonian University
- 30-348 Krakow
- Poland
| | - Mateusz Marek Marzec
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Marta Gajewska
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Angelika Kmita
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Jan Żukrowski
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | - Marcin Sikora
- AGH University of Science and Technology
- Academic Centre for Materials and Nanotechnology
- 30-059 Krakow
- Poland
| | | | - Andrzej Bernasik
- AGH University of Science and Technology
- Faculty of Physics and Applied Computer Science
- 30-059 Krakow
- Poland
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16
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Roca AG, Gutiérrez L, Gavilán H, Fortes Brollo ME, Veintemillas-Verdaguer S, Morales MDP. Design strategies for shape-controlled magnetic iron oxide nanoparticles. Adv Drug Deliv Rev 2019; 138:68-104. [PMID: 30553951 DOI: 10.1016/j.addr.2018.12.008] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/20/2018] [Accepted: 12/11/2018] [Indexed: 01/01/2023]
Abstract
Ferrimagnetic iron oxide nanoparticles (magnetite or maghemite) have been the subject of an intense research, not only for fundamental research but also for their potentiality in a widespread number of practical applications. Most of these studies were focused on nanoparticles with spherical morphology but recently there is an emerging interest on anisometric nanoparticles. This review is focused on the synthesis routes for the production of uniform anisometric magnetite/maghemite nanoparticles with different morphologies like cubes, rods, disks, flowers and many others, such as hollow spheres, worms, stars or tetrapods. We critically analyzed those procedures, detected the key parameters governing the production of these nanoparticles with particular emphasis in the role of the ligands in the final nanoparticle morphology. The main structural and magnetic features as well as the nanotoxicity as a function of the nanoparticle morphology are also described. Finally, the impact of each morphology on the different biomedical applications (hyperthermia, magnetic resonance imaging and drug delivery) are analysed in detail. We would like to dedicate this work to Professor Carlos J. Serna, Instituto de Ciencia de Materiales de Madrid, ICMM/CSIC, for his outstanding contribution in the field of monodispersed colloids and iron oxide nanoparticles. We would like to express our gratitude for all these years of support and inspiration on the occasion of his retirement.
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Affiliation(s)
- Alejandro G Roca
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, E-08193 Barcelona, Spain.
| | - Lucía Gutiérrez
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain; Dept. Química Analítica, Instituto de Nanociencia de Aragón, Universidad de Zaragoza and CIBER-BBN, E-50018 Zaragoza, Spain.
| | - Helena Gavilán
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - Maria Eugênia Fortes Brollo
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - Sabino Veintemillas-Verdaguer
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
| | - María Del Puerto Morales
- Dept. Energía, Medio Ambiente y Salud, Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain.
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17
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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: 39] [Impact Index Per Article: 6.5] [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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18
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Vangijzegem T, Stanicki D, Boutry S, Paternoster Q, Vander Elst L, Muller RN, Laurent S. VSION as high field MRI T 1 contrast agent: evidence of their potential as positive contrast agent for magnetic resonance angiography. NANOTECHNOLOGY 2018; 29:265103. [PMID: 29620535 DOI: 10.1088/1361-6528/aabbd0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Because of their outstanding magnetic properties, iron oxide nanoparticles have already been the subject of numerous studies in the biomedical field, in particular as a negative contrast agent for T2-weighted nuclear magnetic resonance imaging, or as therapeutic agents in hyperthermia experiments. Recent studies have shown that below a given particle size (i.e. 5 nm), iron oxide may be used to provide a significant positive (brightening) effect on T1-weighted MRI. In such an application, not only the size of the crystal, but also the control of the coating process is essential to ensure optimal properties, especially at a very high field (> 3 T). In this work, we focused on the development of very small iron oxide nanoparticles as a potential platform for high field T1 magnetic resonance angiography (MRA) applications. The feasibility has been evaluated in vivo at 9.4 T, demonstrating the usefulness of the developed system for MRA applications.
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Affiliation(s)
- T Vangijzegem
- Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, B-7000 Mons, Belgium
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19
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Sharifi Dehsari H, Harris RA, Ribeiro AH, Tremel W, Asadi K. Optimizing the Binding Energy of the Surfactant to Iron Oxide Yields Truly Monodisperse Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6582-6590. [PMID: 29726684 DOI: 10.1021/acs.langmuir.8b01337] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Despite the great progress in the synthesis of iron oxide nanoparticles (NPs) using a thermal decomposition method, the production of NPs with low polydispersity index is still challenging. In a thermal decomposition synthesis, oleic acid (OAC) and oleylamine (OAM) are used as surfactants. The surfactants bind to the growth species, thereby controlling the reaction kinetics and hence playing a critical role in the final size and size distribution of the NPs. Finding an optimum molar ratio between the surfactants oleic OAC/OAM is therefore crucial. A systematic experimental and theoretical study, however, on the role of the surfactant ratio is still missing. Here, we present a detailed experimental study on the role of the surfactant ratio in size distribution. We found an optimum OAC/OAM ratio of 3 at which the synthesis yielded truly monodisperse (polydispersity less than 7%) iron oxide NPs without employing any post synthesis size-selective procedures. We performed molecular dynamics simulations and showed that the binding energy of oleate to the NP is maximized at an OAC/OAM ratio of 3. The optimum OAC/OAM ratio of 3 is allowed for the control of the NP size with nanometer precision by simply changing the reaction heating rate. The optimum OAC/OAM ratio has no influence on the crystallinity and the superparamagnetic behavior of the Fe3O4 NPs and therefore can be adopted for the scaled-up production of size-controlled monodisperse Fe3O4 NPs.
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Affiliation(s)
| | - Richard Anthony Harris
- Department of Physics , University of the Free State , Bloemfontein 9300 , Republic of South Africa
| | | | - Wolfgang Tremel
- Department of Chemistry , Johannes Gutenberg University of Mainz , Mainz 55122 , Germany
| | - Kamal Asadi
- Max Planck Institute for Polymer Research , Ackermannweg 10 , Mainz 55128 , Germany
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20
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Nikitin AA, Shchetinin IV, Tabachkova NY, Soldatov MA, Soldatov AV, Sviridenkova NV, Beloglazkina EK, Savchenko AG, Fedorova ND, Abakumov MA, Majouga AG. Synthesis of Iron Oxide Nanoclusters by Thermal Decomposition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4640-4650. [PMID: 29566327 DOI: 10.1021/acs.langmuir.8b00753] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Herein, we report a novel one-step solvothermal synthesis of magnetite nanoclusters (MNCs). In this report, we discuss the synthesis, structure, and properties of MNCs and contrast enhancement in T2-weighted MR images using magnetite nanoclusters. The effect of different organic acids, used as surfactants, on the size and shape of MNCs was investigated. The structure and properties of samples were determined by magnetic measurements, TGA, TEM, HRTEM, XRD, FTIR, and MRI. Magnetic measurements show that obtained MNCs have relatively high saturation magnetization values (65.1-81.5 emu/g) and dependence of the coercive force on the average size of MNCs was established. MNCs were transferred into an aqueous medium by Pluronic F-127, and T2-relaxivity values were determined. T2-Weighted MR phantom images clearly demonstrated that such magnetite nanoclusters can be used as contrast agents for MRI.
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Affiliation(s)
- Aleksey A Nikitin
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
- Department of Chemistry , Lomonosov Moscow State University , Leninskiye gory 1-3, GSP-1 , 119991 Moscow , Russian Federation
| | - Igor V Shchetinin
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
| | - Natalya Yu Tabachkova
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
| | - Mikhail A Soldatov
- Southern Federal University , Bolshaya Sadovaya st., 105 , 344006 Rostov-on-Don , Russian Federation
| | - Alexander V Soldatov
- Southern Federal University , Bolshaya Sadovaya st., 105 , 344006 Rostov-on-Don , Russian Federation
| | - Natalya V Sviridenkova
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
| | - Elena K Beloglazkina
- Department of Chemistry , Lomonosov Moscow State University , Leninskiye gory 1-3, GSP-1 , 119991 Moscow , Russian Federation
| | - Alexander G Savchenko
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
| | - Natalya D Fedorova
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
| | - Maxim A Abakumov
- Department of Chemistry , Lomonosov Moscow State University , Leninskiye gory 1-3, GSP-1 , 119991 Moscow , Russian Federation
- The Russian National Research Medical University , Ostrovityanova 1 , 117997 Moscow , Russian Federation
| | - Alexander G Majouga
- National University of Science and Technology "MISIS" , Leninskiy prospect 4 , 119991 Moscow , Russian Federation
- Department of Chemistry , Lomonosov Moscow State University , Leninskiye gory 1-3, GSP-1 , 119991 Moscow , Russian Federation
- Dmitry Mendeleev University of Chemical Technology of Russia , Miusskaya 9 , 125047 Moscow , Russian Federation
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21
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Stolarczyk JK, Meledandri CJ, Clarke SP, Brougham DF. Size selectable nanoparticle assemblies with magnetic anisotropy tunable across the superparamagnetic to ferromagnetic range. Chem Commun (Camb) 2018; 52:13337-13340. [PMID: 27709207 DOI: 10.1039/c6cc05871j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We present a novel approach for the preparation of magnetic nanoparticle clusters of controlled size and selectable magnetic anisotropy, which provides materials with properties selectable for biomedical applications and as components in magnetically responsive nanocomposites. The assembly process is based on a ligand desorption strategy and allows selection of nanoparticle size and temporal control over final cluster size. Detailed NMR analysis of the suspensions pinpoints the role of particle size in controlling the interparticle interactions, within the clusters, which effectively determine the anisotropy. Colloidal interaction modelling confirms this interpretation and provides a means to predict both colloidal stability and magnetic anisotropy.
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Affiliation(s)
- Jacek K Stolarczyk
- Photonics and Optoelectronics Group, Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany and Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 Munich, Germany
| | - Carla J Meledandri
- Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Dunedin, New Zealand
| | - Sarah P Clarke
- National Institute for Cellular Biotechnology, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Dermot F Brougham
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
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22
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Basini M, Orlando T, Arosio P, Casula MF, Espa D, Murgia S, Sangregorio C, Innocenti C, Lascialfari A. Local spin dynamics of iron oxide magnetic nanoparticles dispersed in different solvents with variable size and shape: A 1H NMR study. J Chem Phys 2017; 146:034703. [DOI: 10.1063/1.4973979] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Basini
- Dipartimento di Fisica and INSTM, Università degli Studi di Milano, Milano, Italy
| | - T. Orlando
- EPR Research Group, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - P. Arosio
- Dipartimento di Fisica and INSTM, Università degli Studi di Milano, Milano, Italy
| | - M. F. Casula
- Dipartimento di Scienze Chimiche e Geologiche and INSTM, Università di Cagliari, Monserrato, Italy
| | - D. Espa
- Dipartimento di Scienze Chimiche e Geologiche and INSTM, Università di Cagliari, Monserrato, Italy
| | - S. Murgia
- Dipartimento di Scienze Chimiche e Geologiche and INSTM, Università di Cagliari, Monserrato, Italy
| | | | - C. Innocenti
- Dipartimento di Chimica and INSTM, Università degli studi di Firenze, Sesto Fiorentino, Italy
| | - A. Lascialfari
- Dipartimento di Fisica and INSTM, Università degli Studi di Milano, Milano, Italy
- Istituto di Nano scienze, CNR-S3, Modena, Italy
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23
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Wu W, Jiang CZ, Roy VAL. Designed synthesis and surface engineering strategies of magnetic iron oxide nanoparticles for biomedical applications. NANOSCALE 2016; 8:19421-19474. [PMID: 27812592 DOI: 10.1039/c6nr07542h] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Iron oxide nanoparticles (NPs) hold great promise for future biomedical applications because of their magnetic properties as well as other intrinsic properties such as low toxicity, colloidal stability, and surface engineering capability. Numerous related studies on iron oxide NPs have been conducted. Recent progress in nanochemistry has enabled fine control over the size, crystallinity, uniformity, and surface properties of iron oxide NPs. This review examines various synthetic approaches and surface engineering strategies for preparing naked and functional iron oxide NPs with different physicochemical properties. Growing interest in designed and surface-engineered iron oxide NPs with multifunctionalities was explored in in vitro/in vivo biomedical applications, focusing on their combined roles in bioseparation, as a biosensor, targeted-drug delivery, MR contrast agents, and magnetic fluid hyperthermia. This review outlines the limitations of extant surface engineering strategies and several developing strategies that may overcome these limitations. This study also details the promising future directions of this active research field.
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Affiliation(s)
- Wei Wu
- Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, P. R. China. and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P. R. China.
| | - Chang Zhong Jiang
- School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China.
| | - Vellaisamy A L Roy
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P. R. China.
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24
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Zeb A, Xie X, Yousaf AB, Imran M, Wen T, Wang Z, Guo HL, Jiang YF, Qazi IA, Xu AW. Highly Efficient Fenton and Enzyme-Mimetic Activities of Mixed-Phase VO x Nanoflakes. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30126-30132. [PMID: 27779401 DOI: 10.1021/acsami.6b09557] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Artificial enzyme mimetics is a current research area with much interest from scientific community. Some nanomaterials have been found to possess intrinsic enzyme-mimetic activity. In this study, VOx nanoflakes with mixed-phases are synthesized via a quick and facile one-pot synthetic process and their Fenton reaction and enzyme-mimetic activities have been studied. The results show that obtained VOx is not only highly effective Fenton reagent, completely decomposing Rhodamine B (RhB) within less than 1 min, but also exhibits excellent intrinsic peroxidase-like activity as well as H2O2 catalase-like activity. Our results suggest that this VOx nanomaterial can effectively mimic the enzyme cascade reaction of horseradish peroxidase (HRP). VOx nanoflakes have excellent affinity toward 3,3',5,5'-tetramethylbenzidine (TMB) for oxidation and henceforth, it can be used for the colorimetric assay of glucose and H2O2. Moreover, this study indicates that VOx nanoflakes can also be used for the efficient degradation of environmental pollutants.
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Affiliation(s)
- Akif Zeb
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST) , Sector H-12, Islamabad, Pakistan
| | - Xiao Xie
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Ammar B Yousaf
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - M Imran
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Tao Wen
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Zhou Wang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Hong-Li Guo
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Yi-Fan Jiang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
| | - Ishtiaq A Qazi
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST) , Sector H-12, Islamabad, Pakistan
| | - An-Wu Xu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , Hefei 230026, P.R. China
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25
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Vomir M, Turnbull R, Birced I, Parreira P, MacLaren D, Lee SL, André P, Bigot JY. Dynamical Torque in CoxFe3-xO4 Nanocube Thin Films Characterized by Femtosecond Magneto-Optics: A π-Shift Control of the Magnetization Precession. NANO LETTERS 2016; 16:5291-5297. [PMID: 27398653 PMCID: PMC4981894 DOI: 10.1021/acs.nanolett.6b02618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Indexed: 06/06/2023]
Abstract
For spintronic devices excited by a sudden magnetic or optical perturbation, the torque acting on the magnetization plays a key role in its precession and damping. However, the torque itself can be a dynamical quantity via the time-dependent anisotropies of the system. A challenging problem for applications is then to disentangle the relative importance of various sources of anisotropies in the dynamical torque, such as the dipolar field, the crystal structure or the shape of the particular interacting magnetic nanostructures. Here, we take advantage of a range of colloidal cobalt ferrite nanocubes assembled in 2D thin films under controlled magnetic fields to demonstrate that the phase, ϕPrec, of the precession carries a strong signature of the dynamical anisotropies. Performing femtosecond magneto-optics, we show that ϕPrec displays a π-shift for a particular angle θH of an external static magnetic field, H. θH is controlled with the cobalt concentration, the laser intensity, as well as the interparticle interactions. Importantly, it is shown that the shape anisotropy, which strongly departs from those of equivalent bulk thin films or individual noninteracting nanoparticles, reveals the essential role played by the interparticle collective effects. This work shows the reliability of a noninvasive optical approach to characterize the dynamical torque in high density magnetic recording media made of organized and interacting nanoparticles.
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Affiliation(s)
- Mircea Vomir
- Institut de Physique et Chimie des Matériaux de
Strasbourg, UMR 7504, CNRS, Université
de Strasbourg, BP 43,
23 rue du Loess, 67034 Strasbourg Cedex 02, France
| | - Robin Turnbull
- SUPA, School
of Physics and Astronomy, University of
St. Andrews, St Andrews KY16 9SS, United Kingdom
| | - Ipek Birced
- SUPA, School
of Physics and Astronomy, University of
St. Andrews, St Andrews KY16 9SS, United Kingdom
| | - Pedro Parreira
- SUPA, Department
of Physics and Astronomy, University of
Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Donald
A. MacLaren
- SUPA, Department
of Physics and Astronomy, University of
Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Stephen L. Lee
- SUPA, School
of Physics and Astronomy, University of
St. Andrews, St Andrews KY16 9SS, United Kingdom
| | - Pascal André
- SUPA, School
of Physics and Astronomy, University of
St. Andrews, St Andrews KY16 9SS, United Kingdom
- Elements
Chemistry Laboratory, RIKEN, Wako 351-0198, Japan
- Department of Physics, CNRS-Ewha International
Research Center, Ewha W. University, Seoul 120-750, Republic of Korea
| | - Jean-Yves Bigot
- Institut de Physique et Chimie des Matériaux de
Strasbourg, UMR 7504, CNRS, Université
de Strasbourg, BP 43,
23 rue du Loess, 67034 Strasbourg Cedex 02, France
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26
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Pardo A, Pujales R, Blanco M, Villar-Alvarez EM, Barbosa S, Taboada P, Mosquera V. Analysis of the influence of synthetic paramaters on the structure and physico-chemical properties of non-spherical iron oxide nanocrystals and their biological stability and compatibility. Dalton Trans 2016; 45:797-810. [DOI: 10.1039/c5dt03923a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Monodisperse non-spherical magnetic IONCs obtained by simple methods display excellent magnetic properties with high potential for theranostic applications.
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Affiliation(s)
- Alberto Pardo
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Rosa Pujales
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Mateo Blanco
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Eva M. Villar-Alvarez
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Silvia Barbosa
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Víctor Mosquera
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
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27
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Iacovita C, Stiufiuc R, Radu T, Florea A, Stiufiuc G, Dutu A, Mican S, Tetean R, Lucaciu CM. Polyethylene Glycol-Mediated Synthesis of Cubic Iron Oxide Nanoparticles with High Heating Power. NANOSCALE RESEARCH LETTERS 2015; 10:391. [PMID: 26446074 PMCID: PMC4596149 DOI: 10.1186/s11671-015-1091-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 09/27/2015] [Indexed: 05/04/2023]
Abstract
Iron oxide magnetic nanoparticles (IOMNPs) have been successfully synthesized by means of solvothermal reduction method employing polyethylene glycol (PEG200) as a solvent. The as-synthesized IOMNPs are poly-dispersed, highly crystalline, and exhibit a cubic shape. The size of IOMNPs is strongly dependent on the reaction time and the ration between the amount of magnetic precursor and PEG200 used in the synthesis method. At low magnetic precursor/PEG200 ratio, the cubic IOMNPs coexist with polyhedral IOMNPs. The structure and morphology of the IOMNPs were thoroughly investigated by using a wide range of techniques: TEM, XRD, XPS, FTIR, and RAMAN. XPS analysis showed that the IOMNPs comprise a crystalline magnetite core bearing on the outer surface functional groups from PEG200 and acetate. The presence of physisorbed PEG200 on the IOMNP surface is faintly detected through FT-IR spectroscopy. The surface of IOMNPs undergoes oxidation into maghemite as proven by RAMAN spectroscopy and the occurrence of satellite peaks in the Fe2p XP spectra. The magnetic studies performed on powder show that the blocking temperature (TB) of IOMNPs is around 300 K displaying a coercive field in between 160 and 170 Oe. Below the TB, the field-cooled (FC) curves turn concave and describe a plateau indicating that strong magnetic dipole-dipole interactions are manifested in between IOMNPs. The specific absorption rate (SAR) values increase with decreasing nanoparticle concentrations for the IOMNPs dispersed in water. The SAR dependence on the applied magnetic field, studied up to magnetic field amplitude of 60 kA/m, presents a sigmoid shape with saturation values up to 1700 W/g. By dispersing the IOMNPs in PEG600 (liquid) and PEG1000 (solid), it was found that the SAR values decrease by 50 or 75 %, indicating that the Brownian friction within the solvent was the main contributor to the heating power of IOMNPs.
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Affiliation(s)
- Cristian Iacovita
- Department of Pharmaceutical Physics-Biophysics, Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Pasteur 6, 400349, Cluj-Napoca, Romania.
| | - Rares Stiufiuc
- Department of Pharmaceutical Physics-Biophysics, Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Pasteur 6, 400349, Cluj-Napoca, Romania.
| | - Teodora Radu
- Interdisciplinary Research Institute on Bio-Nano-Science, Treboniu Laurian 42, 400271, Cluj-Napoca, Romania.
- National Institute of Research and Development for Isotopic and Molecular Technologies, Donath 65-103, 400293, Cluj-Napoca, Romania.
| | - Adrian Florea
- Department of Cell and Molecular Biology, Faculty of Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Pasteur 6, 400349, Cluj-Napoca, Romania.
| | - Gabriela Stiufiuc
- Faculty of Physics, "Babes Bolyai" University, Kogalniceanu 1, 400084, Cluj-Napoca, Romania.
| | - Alina Dutu
- Department of Physiology, Faculty of Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, Clinicilor 1, 400006, Cluj-Napoca, Romania.
| | - Sever Mican
- Faculty of Physics, "Babes Bolyai" University, Kogalniceanu 1, 400084, Cluj-Napoca, Romania.
| | - Romulus Tetean
- Faculty of Physics, "Babes Bolyai" University, Kogalniceanu 1, 400084, Cluj-Napoca, Romania.
| | - Constantin M Lucaciu
- Department of Pharmaceutical Physics-Biophysics, Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy, Pasteur 6, 400349, Cluj-Napoca, Romania.
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28
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Moya C, Iglesias-Freire Ó, Batlle X, Labarta A, Asenjo A. Superparamagnetic versus blocked states in aggregates of Fe(3-x)O₄ nanoparticles studied by MFM. NANOSCALE 2015; 7:17764-17770. [PMID: 26456633 DOI: 10.1039/c5nr04424c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Magnetic domain configurations in two samples containing small aggregates of Fe(3-x)O4 nanoparticles of about 11 and 49 nm in size, respectively, were characterized by magnetic force microscopy (MFM). Two distinct magnetic behaviors were observed depending on the particle size. The aggregates constituted of nanoparticles of about 11 nm in size showed a uniform dark contrast on MFM images, reflecting the predominant superparamagnetic character of these particles and arising from the coherent rotation of the spins within the aggregate as the latter align along the tip stray-field. By applying a variable in-plane field, it is possible to induce magnetic polarization yielding an increasing dark/bright contrast as the strength of the applied field overcomes the stray-field of the tip, although this polarization completely disappears as the remanent state is recovered when the magnetic field is switched off. On the contrary, for aggregates of NPs of about 49 nm in size, dark/bright contrast associated with the existence of magnetic domains and magnetic polarization prevails in MFM images all along the magnetic cycle due to the blocking state of the magnetization of these larger particles, even in the absence of an applied field. All in all, we unambiguously demonstrate the capabilities of magnetic force microscopy to distinguish between blocked and superparamagnetic states in the aggregates of magnetic nanoparticles. Micromagnetic simulations strongly support the conclusions stated from the MFM experiments.
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Affiliation(s)
- Carlos Moya
- Departament de Física Fonamental, Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Barcelona, 08028, Spain.
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29
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Worden M, Bruckman MA, Kim MH, Steinmetz NF, Kikkawa JM, LaSpina C, Hegmann T. Aqueous synthesis of polyhedral "brick-like" iron oxide nanoparticles for hyperthermia and T2 MRI contrast enhancement. J Mater Chem B 2015; 3:6877-6884. [PMID: 26693011 PMCID: PMC4675363 DOI: 10.1039/c5tb01138h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A low temperature, aqueous synthesis of polyhedral iron oxide nanoparticles (IONPs) is presented. The modification of the co-precipitation hydrolysis method with Triton X surfactants results in the formation of crystalline polyhedral particles. The particles are herein termed iron oxide "nanobricks" (IONBs) as the variety of particles made are all variations on a simple "brick-like" rhombohedral shape as evaluated by TEM. These IONBs can be easily coated with hydrophilic silane ligands, allowing them to be dispersed in aqueous media. The dispersed particles are investigated for potential applications as hyperthermia and T2 MRI contrast agents. The results demonstrate that the IONBs perform better than comparable spherical IONPs in both applications, and show r2 values amongst the highest for iron oxide based materials reported in the literature.
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Affiliation(s)
- Matthew Worden
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH
| | - Michael A Bruckman
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH
| | - Min-Ho Kim
- Department of Biological Sciences, Kent State University, Kent, OH
| | - Nicole F Steinmetz
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH ; Departments of Radiology, Materials Science and Engineering, and Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH
| | - James M Kikkawa
- Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA
| | - Catherine LaSpina
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH
| | - Torsten Hegmann
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH ; Liquid Crystal Institute, Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH
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30
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Xiao L, Mertens M, Wortmann L, Kremer S, Valldor M, Lammers T, Kiessling F, Mathur S. Enhanced in vitro and in vivo cellular imaging with green tea coated water-soluble iron oxide nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6530-6540. [PMID: 25729881 DOI: 10.1021/am508404t] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fully green and facile redox chemistry involving reduction of colloidal iron hydroxide (Fe(OH)3) through green tea (GT) polyphenols produced water-soluble Fe3O4 nanocrystals coated with GT extracts namely epigallocatechin gallate (EGCG) and epicatechin (EC). Electron donating polyphenols stoichiometrically reduced Fe(3+) ions into Fe(2+) ions resulting in the formation of magnetite (Fe3O4) nanoparticles and corresponding oxidized products (semiquinones and quinones) that simultaneously served as efficient surface chelators for the Fe3O4 nanoparticles making them dispersible and stable in water, PBS, and cell culture medium for extended time periods. As-formed iron oxide nanoparticles (2.5-6 nm) displayed high crystallinity and saturation magnetization as well as high relaxivity ratios manifested in strong contrast enhancement observed in T2-weighted images. Potential of green tea-coated superparamagnetic iron oxide nanocrystals (SPIONs) as superior negative contrast agents was confirmed by in vitro and in vivo experiments. Primary human macrophages (J774A.1) and colon cancer cells (CT26) were chosen to assess cytotoxicity and cellular uptake of GT-, EGCGq-, and ECq-coated Fe3O4 nanoparticles, which showed high uptake efficiencies by J774A.1 and CT26 cells without any additional transfection agent. Furthermore, the in vivo accumulation characteristics of GT-coated Fe3O4 nanoparticles were similar to those observed in clinical studies of SPIONs with comparable accumulation in epidermoid cancer-xenograft bearing mice. Given their promising transport and uptake characteristics and new surface chemistry, GT-SPIONs conjugates can be applied for multimodal imaging and therapeutic applications by anchoring further functionalities.
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Affiliation(s)
- Lisong Xiao
- †Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Marianne Mertens
- ‡Department of Experimental Molecular Imaging, RWTH Aachen University Hospital, D-52074 Aachen, Germany
| | - Laura Wortmann
- †Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Silke Kremer
- †Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Martin Valldor
- §Max-Planck-Institute for Chemical Physics and Solids, D-01187 Dresden, Germany
| | - Twan Lammers
- ‡Department of Experimental Molecular Imaging, RWTH Aachen University Hospital, D-52074 Aachen, Germany
| | - Fabian Kiessling
- ‡Department of Experimental Molecular Imaging, RWTH Aachen University Hospital, D-52074 Aachen, Germany
| | - Sanjay Mathur
- †Institute of Inorganic Chemistry, University of Cologne, D-50939 Cologne, Germany
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31
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Materia ME, Guardia P, Sathya A, Leal MP, Marotta R, Di Corato R, Pellegrino T. Mesoscale assemblies of iron oxide nanocubes as heat mediators and image contrast agents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:808-16. [PMID: 25569814 DOI: 10.1021/la503930s] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Iron oxide nanocubes (IONCs) represent one of the most promising iron-based nanoparticles for both magnetic resonance image (MRI) and magnetically mediated hyperthermia (MMH). Here, we have set a protocol to control the aggregation of magnetically interacting IONCs within a polymeric matrix in a so-called magnetic nanobead (MNB) having mesoscale size (200 nm). By the comparison with individual coated nanocubes, we elucidate the effect of the aggregation on the specific adsorption rates (SAR) and on the T1 and T2 relaxation times. We found that while SAR values decrease as IONCs are aggregated into MNBs but still keeping significant SAR values (200 W/g at 300 kHz), relaxation times show very interesting properties with outstanding values of r2/r1 ratio for the MNBs with respect to single IONCs.
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32
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Moya C, Morales MDP, Batlle X, Labarta A. Tuning the magnetic properties of Co-ferrite nanoparticles through the 1,2-hexadecanediol concentration in the reaction mixture. Phys Chem Chem Phys 2015; 17:13143-9. [DOI: 10.1039/c5cp01052g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports on the effect of the 1,2-hexadecanediol content on the structural and magnetic properties of CoFe2O4 nanoparticles synthesized by thermal decomposition of metal–organic precursors in 1-octadecene.
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Affiliation(s)
- Carlos Moya
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona
- Spain
| | | | - Xavier Batlle
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona
- Spain
| | - Amílcar Labarta
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona
- Spain
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33
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Moya C, Batlle X, Labarta A. The effect of oleic acid on the synthesis of Fe3−xO4 nanoparticles over a wide size range. Phys Chem Chem Phys 2015; 17:27373-9. [DOI: 10.1039/c5cp03395k] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports on the effect of the oleic acid concentration on the magnetic and structural properties of Fe3−xO4 nanoparticles synthesized by thermal decomposition of Fe(acac)3 in benzyl-ether.
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Affiliation(s)
- Carlos Moya
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona 08028
- Spain
| | - Xavier Batlle
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona 08028
- Spain
| | - Amílcar Labarta
- Departament de Física Fonamental
- Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- Barcelona 08028
- Spain
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34
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Mansour AM. Photocatalytic degradation of methylene blue with hematite nanoparticles synthesized by thermal decomposition of fluoroquinolones oxalato–iron(iii) complexes. RSC Adv 2015. [DOI: 10.1039/c5ra12157d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermal decomposition of fluoroquinolones oxalato iron(iii) complexes, synthesized from fluoroquinolones and potassium tris(oxalato)ferrate(iii) trihydrate, gave α-Fe2O3 nanoparticles suitable for the photocatalytic degradation of methylene blue.
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Affiliation(s)
- Ahmed M. Mansour
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
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35
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Lavorato GC, Lima E, Tobia D, Fiorani D, Troiani HE, Zysler RD, Winkler EL. Size effects in bimagnetic CoO/CoFe2O4 core/shell nanoparticles. NANOTECHNOLOGY 2014; 25:355704. [PMID: 25120018 DOI: 10.1088/0957-4484/25/35/355704] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The control of the size of bimagnetic nanoparticles represents an important step toward the study of fundamental properties and the design of new nanostructured magnetic materials. We report the synthesis and the structural and magnetic characterization of bimagnetic CoO/CoFe2O4 core/shell nanoparticles. The material was fabricated by a seed-mediated growth high-temperature decomposition method with sizes in the range of 5-11 nm. We show that the core/shell morphology favours the crystallinity of the shell phase, and the reduction of the particle size leads to a remarkable increase of the magnetic hardening. When the size is reduced, the coercive field at 5 K increases from 21.5 kOe to 30.8 kOe, while the blocking temperature decreases from 388 K to 167 K. The size effects on the magnetic behaviour are described through a phenomenological model for strongly ferri-/antiferromagnetic coupled phases.
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Affiliation(s)
- Gabriel C Lavorato
- Centro Ato´mico Bariloche, CNEA-CONICET, 8400 S.C. de Bariloche, Río Negro, Argentina. Argentine-Italian Joint Laboratory of Nanomagnetism, LIANAM, Laboratorio Resonancias Magnéticas -CNEA, Argentina/Istituto di Struttura della Materia, CNR, Italy
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36
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Arndt D, Zielasek V, Dreher W, Bäumer M. Ethylene diamine-assisted synthesis of iron oxide nanoparticles in high-boiling polyolys. J Colloid Interface Sci 2014; 417:188-98. [DOI: 10.1016/j.jcis.2013.11.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 10/31/2013] [Accepted: 11/11/2013] [Indexed: 11/28/2022]
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37
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Guardia P, Riedinger A, Nitti S, Pugliese G, Marras S, Genovese A, Materia ME, Lefevre C, Manna L, Pellegrino T. One pot synthesis of monodisperse water soluble iron oxide nanocrystals with high values of the specific absorption rate. J Mater Chem B 2014; 2:4426-4434. [DOI: 10.1039/c4tb00061g] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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38
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Superparamagnetic iron oxide based nanoprobes for imaging and theranostics. Adv Colloid Interface Sci 2013; 199-200:95-113. [PMID: 23891347 DOI: 10.1016/j.cis.2013.06.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 06/21/2013] [Accepted: 06/27/2013] [Indexed: 12/11/2022]
Abstract
The need to target, deliver and subsequently evaluate the efficacy of therapeutics in the treatment of a disease has provided added impetus in developing novel and highly efficient contrast agents. Superparamagnetic iron oxide nanoparticles (SPIONs) have offered tremendous potential in designing advanced magnetic resonance imaging (MRI) diagnostic agents, due to their unique physicochemical properties. There has been tremendous effort devoted in the recent past in developing synthetic methodologies through which their size, hydrodynamic radii, chemical composition and morphologies could be tailored at the nanoscale. This enables one to fine tune their magnetic behavior, and thus their MRI response. While novel synthetic strategies are being assembled for directing SPIONs to the diseased site as well as imparting them stealth and biocompatibility, it is also essential to evaluate their biological toxicological profiles. This review highlights recent advances that have been made in the synthesis of SPIONs, subsequent functionalization with desired entities, and a discussion on their use as MRI contrast agents in cardiovascular research.
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39
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Mahmoud WE, Bronstein LM, Al-Hazmi F, Al-Noaiser F, Al-Ghamdi AA. Development of Fe/Fe3O4 core-shell nanocubes as a promising magnetic resonance imaging contrast agent. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13095-13101. [PMID: 24079275 DOI: 10.1021/la403158d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Here, we report the synthesis, characterization, and properties of Fe/Fe3O4 core-shell nanocubes prepared via a simple route. It includes NaBH4 reduction of FeCl3 in an ethylene glycol solution in the presence of 2-mercaptopropionic acid (surfactant) and trisodium citrate (cosurfactant) followed by surface oxidation with trimethylamine N-oxide. The morphology and structure of Fe/Fe3O4 core-shell nanocubes were characterized using transmission electron microscopy (TEM), high-resolution TEM, selected area electron diffraction, X-ray powder diffraction, and X-ray photoelectron spectroscopy. All of the methods confirm a Fe/Fe3O4 core-shell structure of nanocubes. Magnetic measurements revealed that the Fe/Fe3O4 core/shell nanocubes are superparamagnetic at 300 K with a saturation magnetization of 129 emu/g. The T2 weighted imaging and the T2 relaxation time showed high MRI contrast and sensitivity, making these nanocubes viable candidates as enhanced MRI contrast agents.
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Affiliation(s)
- Waleed E Mahmoud
- Faculty of Science, Physics Department, King Abdulaziz University , Jeddah, Saudi Arabia
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40
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Martinez-Boubeta C, Simeonidis K, Makridis A, Angelakeris M, Iglesias O, Guardia P, Cabot A, Yedra L, Estradé S, Peiró F, Saghi Z, Midgley PA, Conde-Leborán I, Serantes D, Baldomir D. Learning from nature to improve the heat generation of iron-oxide nanoparticles for magnetic hyperthermia applications. Sci Rep 2013; 3:1652. [PMID: 23576006 PMCID: PMC3622918 DOI: 10.1038/srep01652] [Citation(s) in RCA: 243] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 04/02/2013] [Indexed: 01/21/2023] Open
Abstract
The performance of magnetic nanoparticles is intimately entwined with their structure, mean size and magnetic anisotropy. Besides, ensembles offer a unique way of engineering the magnetic response by modifying the strength of the dipolar interactions between particles. Here we report on an experimental and theoretical analysis of magnetic hyperthermia, a rapidly developing technique in medical research and oncology. Experimentally, we demonstrate that single-domain cubic iron oxide particles resembling bacterial magnetosomes have superior magnetic heating efficiency compared to spherical particles of similar sizes. Monte Carlo simulations at the atomic level corroborate the larger anisotropy of the cubic particles in comparison with the spherical ones, thus evidencing the beneficial role of surface anisotropy in the improved heating power. Moreover we establish a quantitative link between the particle assembling, the interactions and the heating properties. This knowledge opens new perspectives for improved hyperthermia, an alternative to conventional cancer therapies.
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Affiliation(s)
- Carlos Martinez-Boubeta
- Departament d'Electrònica and IN2UB, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
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41
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Salas G, Veintemillas-Verdaguer S, Morales MDP. Relationship between physico-chemical properties of magnetic fluids and their heating capacity. Int J Hyperthermia 2013; 29:768-76. [PMID: 24001026 DOI: 10.3109/02656736.2013.826824] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The final goal in magnetic hyperthermia research is to use nanoparticles in the form of a colloidal suspension injected into human beings for a therapeutic application. Therefore the challenge is not only to develop magnetic nanoparticles with good heating capacities, but also with good colloidal properties, long blood circulation time and with grafted ligands able to facilitate their specific internalisation in tumour cells. Significant advances have been achieved optimising the properties of the magnetic nanoparticles, showing extremely large specific absorption rate values that will contribute to a reduction in the concentration of the magnetic fluid that needs to be administered. In this review we show the effect of different characteristics of the magnetic particles, such as size, size distribution and shape, and the colloidal properties of their aqueous suspensions, such as hydrodynamic size and surface modification, on the heating capacity of the magnetic colloids.
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Affiliation(s)
- Gorka Salas
- Instituto de Ciencia de Materiales de Madrid/CSIC, Campus Universitario de Cantoblanco , Madrid , Spain and
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42
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Figueroa AI, Moya C, Bartolomé J, Bartolomé F, García LM, Pérez N, Labarta A, Batlle X. SiO2 coating effects in the magnetic anisotropy of Fe3-xO4 nanoparticles suitable for bio-applications. NANOTECHNOLOGY 2013; 24:155705. [PMID: 23518930 DOI: 10.1088/0957-4484/24/15/155705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present radio frequency transverse susceptibility (TS) measurements on oleic acid-coated and SiO2-coated Fe3-xO4 magnetite nanoparticles. The effects of the type of coating on the interparticle interactions and magnetic anisotropy are evaluated for two different particle sizes in powder samples. On the one hand, SiO2 coating reduces the interparticle interactions as compared to oleic acid coating, the reduction being more effective for 5 nm than for 14 nm diameter particles. On the other hand, the magnetic anisotropy field at low temperature is lower than 1 kOe in all cases and independent of the coating used. Our results are relevant concerning applications in biomedicine, since the SiO2 coating renders 5 and 14 nm hydrophilic particles with very limited agglomeration, low anisotropy, and superparamagnetic behavior at room temperature. The TS technique also allows us to discriminate the influence on the anisotropy field of interparticle interactions from that of the thermal fluctuations.
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Affiliation(s)
- A I Figueroa
- Departamento de Física de la Materia Condensada, Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
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43
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Gimenez-Lopez MDC, La Torre A, Fay MW, Brown PD, Khlobystov AN. Assembly and Magnetic Bistability of Mn3O4Nanoparticles Encapsulated in Hollow Carbon Nanofibers. Angew Chem Int Ed Engl 2013; 52:2051-4. [DOI: 10.1002/anie.201207855] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Indexed: 11/11/2022]
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44
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Gimenez-Lopez MDC, La Torre A, Fay MW, Brown PD, Khlobystov AN. Assembly and Magnetic Bistability of Mn3
O4
Nanoparticles Encapsulated in Hollow Carbon Nanofibers. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201207855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Sharma R, Agrawal VV, Srivastava AK, Govind G, Nain L, Imran M, Kabi SR, Sinha RK, Malhotra BD. Phase control of nanostructured iron oxide for application to biosensor. J Mater Chem B 2013; 1:464-474. [DOI: 10.1039/c2tb00192f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Sharma G, Jeevanandam P. Synthesis of self-assembled prismatic iron oxide nanoparticles by a novel thermal decomposition route. RSC Adv 2013. [DOI: 10.1039/c2ra22004k] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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47
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Guardia P, Di Corato R, Lartigue L, Wilhelm C, Espinosa A, Garcia-Hernandez M, Gazeau F, Manna L, Pellegrino T. Water-soluble iron oxide nanocubes with high values of specific absorption rate for cancer cell hyperthermia treatment. ACS NANO 2012; 6:3080-91. [PMID: 22494015 DOI: 10.1021/nn2048137] [Citation(s) in RCA: 423] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Iron oxide nanocrystals (IONCs) are appealing heat mediator nanoprobes in magnetic-mediated hyperthermia for cancer treatment. Here, specific absorption rate (SAR) values are reported for cube-shaped water-soluble IONCs prepared by a one-pot synthesis approach in a size range between 13 and 40 nm. The SAR values were determined as a function of frequency and magnetic field applied, also spanning technical conditions which are considered biomedically safe for patients. Among the different sizes tested, IONCs with an average diameter of 19 ± 3 nm had significant SAR values in clinical conditions and reached SAR values up to 2452 W/g(Fe) at 520 kHz and 29 kAm(-1), which is one of the highest values so far reported for IONCs. In vitro trials carried out on KB cancer cells treated with IONCs of 19 nm have shown efficient hyperthermia performance, with cell mortality of about 50% recorded when an equilibrium temperature of 43 °C was reached after 1 h of treatment.
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Affiliation(s)
- Pablo Guardia
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
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48
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Huang CC, Chang CN, Yeh CS. A thermolysis approach to simultaneously achieve crystal phase- and shape-control of ternary M-Fe-O metal oxide nanoparticles. NANOSCALE 2011; 3:4254-4260. [PMID: 21879122 DOI: 10.1039/c1nr10701a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Significant studies have achieved beautiful control in particle size, while the shape- and phase-control synthesis of nanoparticles remains an open challenge. In this study, we have developed a generalized methodology to selectively prepare either NaCl-type (reduced form) or spinel-type ferrite (oxidized form) M-Fe-O (M = Mn, Co) crystallites with high reproducibility. A two-step heating process was able to control formation of two types of crystal phase, either a thermodynamic spinel-type under air or a kinetic-control of NaCl-type (rock salt structure) under Ar in a cubic morphology. On the other hand, the three-step heating procedure in air obtained the spinel-type with a thermodynamic equilibrium octahedral shape exclusively. Either using metal acetates (M(ac)(2)) or metal acetylacetonates (M(acac)(2)) as the starting precursors (M = Mn, Co) can be introduced to prepare NaCl-type (reduced form) or spinel-type ferrite (oxidized form) crystallites with identical experimental parameters, including precursor concentration, reaction temperature, reaction time, and heating rate. The oleic acid molecule, reaction temperature, and heating rate employed in the synthesis were carefully examined and found acting as determined roles behind the reaction processes. Apart from the previous literature reports as shape-directed and/or stabilizing agents, the oleic acid molecule played an additional phase-tuning role.
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Affiliation(s)
- Chih-Chia Huang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
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Laurenti M, Guardia P, Contreras-Cáceres R, Pérez-Juste J, Fernandez-Barbero A, Lopez-Cabarcos E, Rubio-Retama J. Synthesis of thermosensitive microgels with a tunable magnetic core. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:10484-10491. [PMID: 21790174 DOI: 10.1021/la201723a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, we describe a new methodology for the preparation of monodisperse and thermosensitive microgels with magnetic core. In order to produce such a material, hydrophobic magnetic Fe(3)O(4) nanoparticles were prepared by two methods: thermal decomposition and coprecipitation. The surface of these nanoparticles was modified by addition of 3-butenoic acid, and after that these nanoparticles were dispersed in water and submitted to free radical polymerization at 70 °C in the presence of N-isopropylacrylamide (NIPAM) and bisacrylamide. The result of this reaction was monodisperse microgels with a magnetic core. By varying the amount of 3-butenoic acid, it was possible to obtain hybrid microgels with different magnetic core sizes and different architectures.
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Affiliation(s)
- Marco Laurenti
- Departamento de Química-Física II, Facultad de Farmacia, Universidad Complutense de Madrid, Spain
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50
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Contreras-Cáceres R, Abalde-Cela S, Guardia-Girós P, Fernández-Barbero A, Pérez-Juste J, Alvarez-Puebla RA, Liz-Marzán LM. Multifunctional microgel magnetic/optical traps for SERS ultradetection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4520-4525. [PMID: 21438515 DOI: 10.1021/la200266e] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report on the fabrication of a SERS substrate comprising magnetic and silver particles encapsulated within a poly(N-isopropylacrylamide) (pNIPAM) thermoresponsive microgel. This colloidal substrate has the ability to adsorb analytes from solution while it is expanded (low temperature) and reversibly generate hot spots upon collapse (high temperature or drying). Additionally, the magnetic functionality permits concentration of the composite particles into small spatial regions, which can be exploited to decrease the amount of material per analysis while improving its SERS detection limit. Proof of concept for the sequestration of uncommon molecular systems is demonstrated through the first SERS analysis of pentachlorophenol (PCP), a chlorinated ubiquitous environmental pollutant.
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Affiliation(s)
- Rafael Contreras-Cáceres
- Departamento de Química Física, and Unidad Asociada CSIC-Universidade de Vigo, 36310, Vigo, Spain
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