Synthesis of polyethyleneimine-modified magnetic iron oxide nanoparticles without adding base and other additives

Liu, Yu; Yang, Jingxuan; Xie, Maoqiong; Xu, Jinshan; Li, Yang; Shen, Hui; Hao, Jianyuan

doi:10.1016/j.matlet.2017.01.056

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…Differing from most reports, magnetite with clear XRD patterns was obtained with an Fe 2+ /Fe 3+ ratio of 2, 3, and 4 even at 150 °C (Figure C). Similar results were observed with the addition of hyperbranched polyethyleneimine (PEI) . The grain size and lattice constant were increased with the increasing amount of Fe 2+ (Figure D), demonstrating that magnetite formation was governed by the dynamics of the intermediate, which led to aggregation rather than the classical ion-by-ion growth method. , …”

Section: Resultssupporting

confidence: 67%

“…Similar results were observed with the addition of hyperbranched polyethyleneimine (PEI). 37 The grain size and lattice constant were increased with the increasing amount of Fe 2+ (Figure 4D), demonstrating that magnetite formation was governed by the dynamics of the intermediate, which led to aggregation rather than the classical ion-by-ion growth method. 32,38 The morphology of these magnetites was measured by scanning electron microscopy (SEM) and is shown in Figure 5.…”

Section: ■ Results and Discussionmentioning

confidence: 94%

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Shaping Magnetite by Hydroxyl Group Numbers of Small Molecules

et al. 2021

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Despite numerous reports on magnetite formation with the assistance of various additives, the role of hydroxyl group (−OH) numbers in small polyol molecules has not yet been understood well. We selected small molecules containing different −OH numbers, such as ethanol, ethylene glycol, propanetriol, butanetetrol, pentitol, hexanehexol, and cyclohexanehexol, as additives in coprecipitation. By increasing the −OH number in these small polyol molecules, the formation of crystallization was slowed, and the size and shape of magnetite were regulated as well possibly due to the changed complexation strength and the stability of the precursor. The increase in temperature and the Fe 2+ /Fe 3+ ratio can reduce the complexation strength. The nucleation and growth of magnetite proceed possibly through the aggregation of polyol-stabilized amorphous complexes and two-line ferrihydrite with low crystallinity based on the −OH numbers, suggesting a nonclassical pathway. The as-prepared magnetite showed a r 2 /r 1 ratio after in vitro MRI measurement as follows: Fe 3

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Section: Resultssupporting

confidence: 67%

Section: ■ Results and Discussionmentioning

confidence: 94%

Shaping Magnetite by Hydroxyl Group Numbers of Small Molecules

et al. 2021

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“…Excellent quality iron oxide magnetic nanoparticle can be synthesized by adopting versatile synthetic approaches include thermal decomposition, co-precipitation, micelle formation, hydrothermal and laser pyrolysis techniques. It was difficult for us to compile all this literature and we have attempted to present each synthetic approach by giving a few examples along with the corresponding formation mechanism (Ali et al, 2016;Martínez-Cabanas et al, 2016;Elrouby et al, 2017;Kandasamy, 2017;Lin et al, 2017;Liu et al, 2017;Rajiv et al, 2017;Sathya et al, 2017).…”

Section: Synthesis Of Iron Oxide Magnetic Nanoparticlesmentioning

confidence: 99%

A Comprehensive Review of Magnetic Nanomaterials Modern Day Theranostics

Gul

Khan

Rehman³

et al. 2019

Front. Mater.

250

134

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Substances at nanoscale, commonly known as "nanomaterials," have always grabbed the attention of researchers for hundreds of years. Among these different types of nanomaterials, magnetic nanomaterials have been the focus of considerable attention during the last two decades as evidenced by an unprecedented increase in the number of research papers focusing these materials. Iron oxide magnetic nanoparticles have occupied a vital position in imaging phenomena; as drug vehicles, controlled/sustained release phenomena and hyperthermia; atherosclerosis diagnosis; prostate cancer. In fact, these are wonderful "theranostic" agents with some under clinical trials for human use. In this review, we have attempted to highlight the advances taking place in the field of magnetic nanoparticles as theranostic agents. Extensive progress has been made in the two most important parameters, namely, control over the size and shape which decide the importance of iron oxide magnetic nanoparticles by developing suitable procedures like precipitation, co-precipitation, thermal decomposition, hydrothermal synthesis, microemulsion synthesis and plant mediated synthesis. After using a suitable synthetic route, workers encounter the most daunting task linked with the materials at nanoscale i.e., the protection against corrosion. Only properly protected iron oxide magnetic nanoparticles can be further connected to different functional systems to make building blocks for application in catalysis, biology and medicines. Finally, "theranostics" which is a combined application of imaging and drug delivery has been discussed. With all the potential uses, toxicity of the of iron oxide magnetic nanoparticles has been discussed.

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“…Physical, chemical, biological, and microfluidic methods have been optimized to achieve the desired shape, size, charge, dispersion of NPs for specific applications [ 10 , [19] , [20] , [21] ]. Physical/mechanical methods including laser ablation, laser-induced pyrolysis, electron beam lithography, gas-phase deposition, are very sophisticated and give low yield.…”

Section: Synthesis Of Hp-mnpsmentioning

confidence: 99%

Aspects of high-performance and bio-acceptable magnetic nanoparticles for biomedical application

Kush

Kumar

Singh

et al. 2021

Asian Journal of Pharmaceutical Sciences

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This review covers extensively the synthesis & surface modification, characterization, and application of magnetic nanoparticles. For biomedical applications, consideration should be given to factors such as design strategies, the synthesis process, coating, and surface passivation. The synthesis method regulates post-synthetic change and specific applications in vitro and in vivo imaging/diagnosis and pharmacotherapy/administration. Special insights have been provided on biodistribution, pharmacokinetics, and toxicity in a living system, which is imperative for their wider application in biology. These nanoparticles can be decorated with multiple contrast agents and thus can also be used as a probe for multi-mode imaging or double/triple imaging, for example, MRI-CT, MRI-PET. Similarly loading with different drug molecules/dye/fluorescent molecules and integration with other carriers have found application not only in locating these particles in vivo but simultaneously target drug delivery/hyperthermia inside the body. Studies are underway to collect the potential of these magnetically driven nanoparticles in various scientific fields such as particle interaction, heat conduction, imaging, and magnetism. Surely, this comprehensive data will help in the further development of advanced techniques for theranostics based on high-performance magnetic nanoparticles and will lead this research area in a new sustainable direction.

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Synthesis of polyethyleneimine-modified magnetic iron oxide nanoparticles without adding base and other additives

Cited by 15 publications

References 11 publications

Shaping Magnetite by Hydroxyl Group Numbers of Small Molecules

Shaping Magnetite by Hydroxyl Group Numbers of Small Molecules

A Comprehensive Review of Magnetic Nanomaterials Modern Day Theranostics

Aspects of high-performance and bio-acceptable magnetic nanoparticles for biomedical application

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