A study of the role of the solvent during magnetite nanoparticle synthesis: tuning size, shape and self-assembly

Douglas, Fraser J.; MacLaren, Donald A.; Murrie, Mark

doi:10.1039/c2ra20494k

Cited by 33 publications

(32 citation statements)

References 47 publications

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“…As observed by Douglas et al, the mechanism here is not consistent with a classic LaMer mechanism. 53 It is plausible that the higher the length of the carbon chain of the polyol, the more effective they are as capping ligands to arrest the growth, hence bigger NPs are obtained as it was shown to be the case with different lengths of poly(ethylene glycol). 54,55 This study confirms that the choice of the solvent is critical to obtaining high quality nanoparticles with a desired size and with a narrow size distribution.…”

Section: Effect Of Synthesis Parametersmentioning

confidence: 99%

Polyol synthesis, functionalisation, and biocompatibility studies of superparamagnetic iron oxide nanoparticles as potential MRI contrast agents

et al. 2016

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Iron oxide nanoparticles (IONPs) of low polydispersity were obtained through a simple polyol synthesis in high pressure and high temperature conditions. The control of the size and morphology of the nanoparticles was studied by varying the solvent used, the amount of iron precursor and the reaction time. Compared with conventional synthesis methods such as thermal decomposition or co-precipitation, this process yields nanoparticles with a narrow particle size distribution in a simple, reproducible and cost effective manner without the need for an inert atmosphere. For example, IONPs with a diameter of ca. 8 nm could be made in a reproducible manner and with good crystallinity as evidenced by X-ray diffraction analysis and high saturation magnetization value (84.5 emu g(-1)). The surface of the IONPs could be tailored post synthesis with two different ligands which provided functionality and stability in water and phosphate buffer saline (PBS). Their potential as a magnetic resonance imaging (MRI) contrast agent was confirmed as they exhibited high r1 and r2 relaxivities of 7.95 mM(-1) s(-1) and 185.58 mM(-1) s(-1) respectively at 1.4 T. Biocompatibility and viability of IONPs in primary human mesenchymal stem cells (hMSCs) was studied and confirmed.

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Section: Effect Of Synthesis Parametersmentioning

confidence: 99%

Polyol synthesis, functionalisation, and biocompatibility studies of superparamagnetic iron oxide nanoparticles as potential MRI contrast agents

et al. 2016

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“…Furthermore, they have been used in olefin formation, photooxidation, and oxygen reduction reaction as sustainable catalysts. FeNPs have been synthesized by chemical reduction, pyrolysis, and solvothermolysis . These chemical synthesis methods sometimes require severe reaction conditions and/or additive reagents such as reductants and surfactants.…”

Section: Introductionmentioning

confidence: 99%

“…FeNPs have been synthesized by chemical reduction, [11] pyrolysis, [12] and solvothermolysis. [13] These chemical synthesis methods sometimes require severe reaction conditions and/or additive reagents such as reductants and surfactants. In contrast, the synthesis of NPs without the aid of additive reagents has been proposed in gas, solid, and liquid phase by using a pulsed laser.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bare Iron Nanoparticles from Ferrocene Hexane Solution by Femtosecond Laser Pulses

et al. 2018

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Iron-based nanoparticles (FeNPs) have unique and attractive properties such as superparamagnetism, biocompatibility, and catalytic activity. Although the synthesis of precious metal NPs from a metal in liquid and/or metal salt solution by a pulsed laser has been investigated, comparably little effort has been devoted to examine the production of FeNPs. Here we report the synthesis of carbon-shell free spherical NPs of iron oxide (magnetite) from ferrocene hexane solution by femtosecond near infrared laser pulses. Nanosecond UV laser pulses are used to compare the evolution of the particle size distribution as a function of laser irradiation time. The size of NPs remains constant even for extended exposure to femtosecond laser pulses, whereas it grows with exposure to nanosecond laser pulses. The primary particles are generated by photochemical reactions regardless of pulse duration; however, the fragmentation of NPs by successive femtosecond laser pulses regulates the particle size.

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“…Similarly, the MW of the polymer has a significant impact on the viscosity of the solution, and it also contributes to determining the conformation of the polymer in solution. Previous studies have shown that the viscosity of the solvent and the stabilizing polymer greatly influence the growth of encapsulated NCs . The viscosity of polymer solution determines the mobility and self‐diffusion rate of solvated ions, thereby affecting the nucleation and growth of nanocrystals …”

Section: Hydrogen Capacity Of Each System Based On the Entire Composimentioning

confidence: 99%

Tailoring Polymer Conformation for Nanocrystal Growth: The Role of Chain Length and Solvent

Cho

Qiu

Urban

2016

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The role of polymer dynamics on nanocrystal growth in the synthesis of composites is studied using a well-controlled Mg nanocrystal-poly(methyl methacrylate) (PMMA) system. The in situ formation of Mg nanocrystals in PMMA is examined under different conditions, varying polymer conformation in solution. The change of hydrogen sorption properties of Mg is investigated to assess functional impacts of morphological changes.

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A study of the role of the solvent during magnetite nanoparticle synthesis: tuning size, shape and self-assembly

Cited by 33 publications

References 47 publications

Polyol synthesis, functionalisation, and biocompatibility studies of superparamagnetic iron oxide nanoparticles as potential MRI contrast agents

Polyol synthesis, functionalisation, and biocompatibility studies of superparamagnetic iron oxide nanoparticles as potential MRI contrast agents

Synthesis of Bare Iron Nanoparticles from Ferrocene Hexane Solution by Femtosecond Laser Pulses

Tailoring Polymer Conformation for Nanocrystal Growth: The Role of Chain Length and Solvent

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