Hexagonal magnetite nanoprisms: preparation, characterization and cellular uptake

Wang, H.; Shrestha, Tej B.; Basel, Matthew T.; Pyle, Marla; Toledo, Yubisela; Konecny, A.; Thapa, Prem; Ikenberry, Myles; Hohn, Keith L.; Chikán, Viktor; Troyer, Deryl L.; Bossmann, Stefan H.

doi:10.1039/c5tb00340g

Cited by 25 publications

(17 citation statements)

References 52 publications

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“…The experiment reveal that: (1) high accumulation of nano-Fe2O3 and nano-Fe3O4 are found in zebrafish; (2) accumulated NPs in zebrafish can be eliminated efficiently when fish are moved to NPfree water; and (3) iron oxide NPs may be adsorbed via the gastrointestinal tract, and store for more than 12 days [113]. The Fe3O4 hexagons coated with a dopamine-based ligand to increase dispersibility in aqueous buffers are only minimally toxic to RAW264.7 cells [114]. Toxicity of sulfhydryl-modified Fe3O4@SiO2 core/shell NPs in mouse fibroblast (L-929) cell lines is low, and the material lacks hemolytic activity, indicating good biocompatibility of this Fe3O4@SiO2@DMSA nanocomposite [115].…”

Section: Toxicity Assessmentmentioning

confidence: 99%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

300

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Section: Toxicity Assessmentmentioning

confidence: 99%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

300

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“…The formation of NCs occurs as follows: At the initial stage of the reaction, nanoparticles grow equally in all the facets, but after the adsorption of CTA + ions on specific crystal facets (100) transforms the spherical nanoparticles to nanocubes by controlling the growth rates along different crystal axes and allowing growth only in the easy axes direction of [111] which dominates the growth at this facet and diminishes the growth in other facets. This process is continued until surface energies were completely elapsed [22,[28][29][30].…”

Section: Resultsmentioning

confidence: 99%

Manganese ferrite nanocubes as an MRI contrast agent

Ravichandran

Velumani

2020

Mater. Res. Express

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Facile synthesis of superparamagnetic, highly crystalline, manganese ferrite nanocubes (MnNCs) is reported. X-ray diffraction depicts single-phase face-centred cubic spinel and the electron microscopy represents the nearly monodispersed cube-like nanostructure with the size ranging from 18 to 20 nm. Vibrating sample magnetometer shows magnetization field-dependent curves at 300 K exhibiting the superparamagnetic behaviour of NCs with negligible remanence. Furthermore, the biocompatibility of NCs was proved by MTT assay. These unique characteristics make this NCs as a contrast agent ideally suited for T 2 -weighted MR imaging. This novel method of synthesizing NCs proves to be very attractive for various biomedical applications because of their outstanding stability and biocompatibility.

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“…The resulted mixture was diluted with 10 mL hexane and 30 mL toluene. The nanoparticles were collected by centrifugation and further washed with chloroform [ 39 ]. In the absence of stearic acid under the same conditions, only Fe 3 O 4 nanocubes were obtained [ 40 ].…”

Section: Methodsmentioning

confidence: 99%

Experimental Investigation of Magnetic Nanoparticle-Enhanced Microwave Hyperthermia

McWilliams

Wang

Binns

et al. 2017

JFB

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The objective of this study was to evaluate microwave heating enhancements offered by iron/iron oxide nanoparticles dispersed within tissue-mimicking media for improving efficacy of microwave thermal therapy. The following dopamine-coated magnetic nanoparticles (MNPs) were considered: 10 and 20 nm diameter spherical core/shell Fe/Fe3O4, 20 nm edge-length cubic Fe3O4, and 45 nm edge-length/10 nm height hexagonal Fe3O4. Microwave heating enhancements were experimentally measured with MNPs dissolved in an agar phantom, placed within a rectangular waveguide. Effects of MNP concentration (2.5–20 mg/mL) and microwave frequency (2.0, 2.45 and 2.6 GHz) were evaluated. Further tests with 10 and 20 nm diameter spherical MNPs dispersed within a two-compartment tissue-mimicking phantom were performed with an interstitial dipole antenna radiating 15 W power at 2.45 GHz. Microwave heating of 5 mg/mL MNP-agar phantom mixtures with 10 and 20 nm spherical, and hexagonal MNPs in a waveguide yielded heating rates of 0.78 ± 0.02 °C/s, 0.72 ± 0.01 °C/s and 0.51 ± 0.03 °C/s, respectively, compared to 0.5 ± 0.1 °C/s for control. Greater heating enhancements were observed at 2.0 GHz compared to 2.45 and 2.6 GHz. Heating experiments in two-compartment phantoms with an interstitial dipole antenna demonstrated potential for extending the radial extent of therapeutic heating with 10 and 20 nm diameter spherical MNPs, compared to homogeneous phantoms (i.e., without MNPs). Of the MNPs considered in this study, spherical Fe/Fe3O4 nanoparticles offer the greatest heating enhancement when exposed to microwave radiation. These nanoparticles show strong potential for enhancing the rate of heating and radial extent of heating during microwave hyperthermia and ablation procedures.

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Hexagonal magnetite nanoprisms: preparation, characterization and cellular uptake

Abstract: Nearly perfect hexagonal Fe3O4 nanoplatelet structures, with edge length of 45 ± 5 nm and thickness of 5 to 6 nm were synthesized from iron(iii) acetylacetonate using the dual ligand system oleic and stearic acid.

Cited by 25 publications

References 52 publications

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Manganese ferrite nanocubes as an MRI contrast agent

Experimental Investigation of Magnetic Nanoparticle-Enhanced Microwave Hyperthermia

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