Cobalt nanoparticles doped emaraldine salt of polyaniline: A promising room temperature magnetic semiconductor

Hatamie, Shadie; Kulkarni, Milind V.; Kulkarni, S.D.; Ningthoujam, R. S.; Vatsa, R.K.; Kale, S. N.

doi:10.1016/j.jmmm.2010.08.022

Cited by 17 publications

(4 citation statements)

References 31 publications

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“…Moreover, as demonstrated in ref. 239 formation of regular arrays of nanoparticles (Co) is possible due to their polymer-assisted self-assembly in polyaniline matrix. Development of polymer based spintronic materials is still in infancy.…”

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confidence: 99%

Magnetic nanoparticles: recent advances in synthesis, self-assembly and applications

et al. 2011

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Nanostructured magnetic materials have a variety of promising applications spreading from nano-scale electronic devices, sensors and high-density data storage media to controlled drug delivery and cancer diagnostics/treatment systems. Magnetic nanoparticles offer the most natural and elegant way for fabrication of such (multi-) functional materials. In this review, we briefly summarize the recent progress in the synthesis of magnetic nanoparticles (which now can be done with precise control over the size and surface chemistry), and nanoscale interactions leading to their self-assembly into 1D, 2D or 3D aggregates. Various approaches to self-organization, directed-, or template-assisted assembly of these nanostructures are discussed with the special emphasis on magnetic-field enabled interactions. We also discuss new physical phenomena associated with magnetic coupling between nanoparticles and their interaction with a substrate and the characterization of the physical properties at the nanoscale using various experimental techniques (including scanning quantum interferometry (SQUID) and magnetic force microscopy). Applications of magnetic nanoparticle assemblies in data storage, spintronics, drug delivery, cancer therapy, and prospective applications such as adaptive materials and multifunctional reconfigurable materials are also highlighted.

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confidence: 99%

Magnetic nanoparticles: recent advances in synthesis, self-assembly and applications

et al. 2011

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“…On the contrary, surface enhancements have several bene¯ts which they have been previously documented. 24 Then using coated MNPs is usually bene¯cial if the coating material has good therapeutic e®ects and minimal e®ect on magnetic properties of MNPs. Indeed, magnetic saturation of 44.86 emu/g (Fig.…”

Section: Magnetic Properties Of Iron Oxide and Casein-coated Iron Oximentioning

confidence: 99%

Casein-Coated Iron Oxide Nanoparticles for in vitro Hyperthermia for Cancer Therapy

Bani

Hatamie

Haghpanahi

et al. 2019

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Iron oxide nanoparticles (NPs) have been a very appealing choice in magnetic-mediated hyperthermia for cancer therapy. The responses of NPs to hyperthermia as a cancer treatment method are complex and variable. Herein, the heating properties of the casein-coated magnetic NPs (MNPs) under an alternating magnetic field were investigated. The casein-coated MNPs were synthesized via one-pot chemical method. The casein-coated MNPs were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), zeta potential, dynamic light scattering (DLS), and vibrating sample magnetometer (VSM) analysis. TEM images of casein-coated MNPs show that their shapes are spherical and their core sizes are between 20[Formula: see text]nm and 25[Formula: see text]nm. The FTIR and EDAX results confirmed the presence of casein on the surface of MNPs. The VSM shows the superparamagnetic nature of iron oxide and casein-coated iron oxide NPs with the magnetic saturation of 60[Formula: see text]emu/g and 44.86[Formula: see text]emu/g, respectively, at room temperature. Furthermore, hyperthermia tests for casein-coated MNPs with various concentrations and frequencies are performed. Hyperthermia results show that lower concentrations of casein-coated MNPs dispatch higher heating into their surrounding medium, whereas maximum specific absorption rate occurs at the concentration of 1[Formula: see text]mg/mL for the frequency of 150[Formula: see text]kHz. Findings of this study suggest that casein-coated MNPs have great potential as an anticancer agent in hyperthermia cancer therapy.

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“…2 Among them, Co NPs have various applications in biomedicine such as hyperthermia for cancer therapy, antibacterial activity and magnetic resonance imaging. 16,[22][23][24] Because of their high Curie temperature and ferromagnetic nature, Co NPs are oscillated in the radio frequency region (i.e., 100-400 kHz) through Neel relaxation and hysteresis loss. [24][25][26] In this research work, we reported on fabrication of nano¯ber-based CA containing rGO/Co nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

“…16,[22][23][24] Because of their high Curie temperature and ferromagnetic nature, Co NPs are oscillated in the radio frequency region (i.e., 100-400 kHz) through Neel relaxation and hysteresis loss. [24][25][26] In this research work, we reported on fabrication of nano¯ber-based CA containing rGO/Co nanocomposite. This magnetic graphene nano¯ber shows acceleration on proliferation and osteogenic di®erentiation under ACMF on hMSCs cell lines.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Acetate/Magnetic Graphene Nanofiber in Enhanced Human Mesenchymal Stem Cells Osteogenic Differentiation Under Alternative Current Magnetic Field

Hatamie

Mohamadyar-Toupkanlou

Mirzaei

et al. 2019

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The three-dimensional (3D) nano scaffold of the cellulose acetate (CA) containing graphene/cobalt nanocomposite (0.1[Formula: see text]wt.%) was fabricated via electrospinning technique, and its impact on bone regeneration was investigated. Through this aim, bone marrow mesenchymal stem cells are cultured on the CA, and graphene/cobalt (rGO/Co)/CA nanocomposite scaffold surfaces and the samples are treated under low frequency alternative magnetic field (75[Formula: see text]Hz). The scaffolds are characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermal studies (TG/DSC). The proliferation behavior of stem cells on CA, and rGO/Co/CA nano scaffolds are studied by MTT assay, show their biocompability after 14 days of cell seeding. The 6-diamidino-2-phenylindole (DAPI) staining is used to confirm the morality of stem cell for duration of seven days. The nanocomposite scaffold is enhanced for extremely higher proliferation compared to the bare CA scaffold. The acceleration on osteogenic differentiation on the bone mesenchymal stem cell is enhanced within 48[Formula: see text]h when rGO/Co/CA scaffold is placed under alternative current magnetic field (ACMF). Furthermore, the acceleration of the stem cells differentiation for the rGO/Co/CA scaffold under ACMF corresponds to the induced scaffold surface roughness caused by graphene sheets, the metallic behavior of graphene and the responding of the nanocomposite magnetic parts (i.e., cobalt nanoparticles) while applying 75[Formula: see text]Hz frequency. Using reverse transcription polymerase chain reaction (RT-PCR) analysis, the superior effect of ACMF on scaffold contain magnetic graphene nanocomposite is confirmed to produce bone related genes within 14 days.

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Cobalt nanoparticles doped emaraldine salt of polyaniline: A promising room temperature magnetic semiconductor

Cited by 17 publications

References 31 publications

Magnetic nanoparticles: recent advances in synthesis, self-assembly and applications

Magnetic nanoparticles: recent advances in synthesis, self-assembly and applications

Casein-Coated Iron Oxide Nanoparticles for in vitro Hyperthermia for Cancer Therapy

Cellulose Acetate/Magnetic Graphene Nanofiber in Enhanced Human Mesenchymal Stem Cells Osteogenic Differentiation Under Alternative Current Magnetic Field

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