Stable water-soluble iron oxide nanoparticles using Tiron

Korpany, Katalin V.; Habib, Fatemah; Murugesu, Muralee; Blum, Amy Szuchmacher

doi:10.1016/j.matchemphys.2012.10.015

Cited by 34 publications

(26 citation statements)

References 42 publications

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“…The SEM images show the formation of a luminous ring surrounding Fe 3 O 4 magnetic nanoparticles, obtained by laser ablation in different solvents. This result is comparable to the analysis of magnetic force microscopy (MFM) [22].…”

Section: Resultssupporting

confidence: 84%

Synthesis of Au/Fe3O4 Magnetic Nanoparticles by Laser Ablation in Organic Solvents

2014

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The synthesis, protection, and size controllability of Fe 3 O 4 magnetic nano-particles have been considered. The Nd:YAG laser pulses were used for ablation of Iron targets in different organic solvents. The Fe 3 O 4 magnetic nanoparticles were successfully fabricated in acetone and toluene solvents, as well as, ethanol-water mixture. The vital issue of protection of nano-particles against biological damage was addressed by Au coating. Structural analyses were carried out by means of scanning electron microscopy, transmission electron microscopy, spectrophotometer, and XRD. The analyses revealed that various solvents and coatings have dramatic influences on both the dimension and magnetic properties of magnetic nano-particles. The laser ablation synthesis in solution provides a convenient way of fabricating magnetic nano-particles.

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Section: Resultssupporting

confidence: 84%

Synthesis of Au/Fe3O4 Magnetic Nanoparticles by Laser Ablation in Organic Solvents

2014

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“…In the course of our work, the CdSe@CdS@hollow-Fe 2 O 3 yolk-shell magneto-fluorescent nanoparticles (MFNP) were functionalized first with Tiron (disodium 4,5-dihydroxy-1,3-benzenedisulfonate) for their incorporation to cells (Korpany et al, 2013). This resulted with stable and well suspended water-dispersed nanoparticles of 14–16 nm hydrodynamic particle size (as determined by dynamic laser scattering analysis).…”

Section: Intracellular Accumulation Of Nano-particlesmentioning

confidence: 99%

Multi-Modal Nano Particle Labeling of Neurons

et al. 2019

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The development of imaging methodologies for single cell measurements over extended timescales of up to weeks, in the intact animal, will depend on signal strength, stability, validity and specificity of labeling. Whereas light-microscopy can achieve these with genetically-encoded probes or dyes, this modality does not allow mesoscale imaging of entire intact tissues. Non-invasive imaging techniques, such as magnetic resonance imaging (MRI), outperform light microscopy in field of view and depth of imaging, but do not offer cellular resolution and specificity, suffer from low signal-to-noise ratio and, in some instances, low temporal resolution. In addition, the origins of the signals measured by MRI are either indirect to the process of interest or hard to validate. It is therefore highly warranted to find means to enhance MRI signals to allow increases in resolution and cellular-specificity. To this end, cell-selective bi-functional magneto-fluorescent contrast agents can provide an elegant solution. Fluorescence provides means for identification of labeled cells and particles location after MRI acquisition, and it can be used to facilitate the design of cell-selective labeling of defined targets. Here we briefly review recent available designs of magneto-fluorescent markers and elaborate on key differences between them with respect to durability and relevant cellular highlighting approaches. We further focus on the potential of intracellular labeling and basic functional sensing MRI, with assays that enable imaging cells at microscopic and mesoscopic scales. Finally, we illustrate the qualities and limitations of the available imaging markers and discuss prospects for in vivo neural imaging and large-scale brain mapping.

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“…9.1) has basic properties. 32 According to pH-partition theory, bases become positive in acidic solutions when the pH values are below the pKa, and acids become negative in basic solutions when the pH values are above the pKa. 33 Therefore, the effect of pH is remarkable and effective on the extent of adsorption from a solution.…”

Section: Effect Of Phmentioning

confidence: 99%

A Simple and Fast Method for Magnetic Solid Phase Extraction of Ochratoxin A

Sargazi¹,

Aliabadi²,

Rahdari³

et al. 2016

J. Braz. Chem. Soc.

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We report on the synthesis of dopamine loaded magnetic nanoparticles (MNPs) for new, simple, fast and repeatable extraction of ochratoxin A from different solvents and milk without utilizing immunoaffinity columns and even high-tech devices. To this end, Fe 3 O 4 nanoparticles (NPs) were synthesized using thermal decomposition reaction and dopamine (DPA) was then conjugated with Fe 3 O 4 nanoparticles (NPs) to form Fe 3 O 4 -DPA NPs. Dynamic light scattering, field emission scanning electron microscopy and transmission electron microscopy revealed an average size of about 15 nm for Fe 3 O 4 -DPA NPs. Moreover, zeta potential measurement and vibrating sample magnetometer confirmed positively charged (16.8 mV) and superparamagnetic behavior of MNPs, which are effective factors for a good adsorbent in the extraction. Various solvents and different effective parameters were measured until acetonitrile:methanol was selected as the best extraction solvent. In addition, based on the pH-partition theory, with changes in pH, we were able to increase and enhance the extraction rate to 94%. Moreover, the ability of Fe 3 O 4 -DPA NPs in solid phase extraction of ochratoxin A from spiked milk was evaluated. The recovery rate for extraction of OTA from milk was 68%.

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Stable water-soluble iron oxide nanoparticles using Tiron

Cited by 34 publications

References 42 publications

Synthesis of Au/Fe3O4 Magnetic Nanoparticles by Laser Ablation in Organic Solvents

Synthesis of Au/Fe3O4 Magnetic Nanoparticles by Laser Ablation in Organic Solvents

Multi-Modal Nano Particle Labeling of Neurons

A Simple and Fast Method for Magnetic Solid Phase Extraction of Ochratoxin A

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