Electron paramagnetic resonance as an effective method for a characterization of functionalized iron oxide

Dobosz, Bernadeta; Krzyminiewski, Ryszard; Schroeder, Grzegorz; Kurczewska, Joanna

doi:10.1016/j.jpcs.2014.01.013

Cited by 20 publications

(10 citation statements)

References 25 publications

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“…For a better understanding of the characteristics of the prepared nanomaterial and ultrasound phantoms, electron spin resonance (ESR) studies were performed. ESR is an effective method to study the properties and quality of magnetic nanoparticles as well as the impact of various conditions on these properties [ 36 , 37 , 38 ]. The technique is based on the Zeeman phenomenon, in which a splitting of the electron energy levels occurs in the sample, caused by the interaction of an external magnetic field with magnetic moments of unpaired electrons.…”

Section: Methodsmentioning

confidence: 99%

Influence of Magnetic Nanoparticles on the Focused Ultrasound Hyperthermia

et al. 2018

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Ultrasound hyperthermia is a medical treatment used to increase temperature of tissues. It can be used independently or as a supportive method for an anticancer treatment. The therapeutic efficacy of focused ultrasound hyperthermia can be improved using sonosensitizers, nanoparticles enhancing the attenuation and dissipation of acoustic energy. As sonosensitizers, we propose magnetic nanoparticles owing to their biodegradability, biocompatibility, and simple positioning in tissues using a magnetic field. Focused ultrasound hyperthermia studies were performed using tissue-mimicking phantoms. Temperature changes were measured at various ultrasound powers and distances from the center of the ultrasound focus. Specific absorption rate (SAR) values, describing the power deposition in the tissues during the hyperthermia treatment, were evaluated for the center of the focus point and for various distances from it. The results show that the addition of nanoparticles increases the SAR almost two times compared to that for the pure phantom. The highest SAR is obtained in the ultrasound focus; it decreases with the increase of the distance from the focus.

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Section: Methodsmentioning

confidence: 99%

Influence of Magnetic Nanoparticles on the Focused Ultrasound Hyperthermia

et al. 2018

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“…The M s calculations were used for in vivo quantification of dextran-coated IONPs in the liver and lungs of Balb-c mice, and the values were found to be 0.25 and 2.4 μg, respectively [ 162 ]. Electron spin resonance (ESR) can also distinguish between endogenous and exogenous iron with great sensitivity (30 nmol Fe/kg), and demonstrated in vivo and ex vivo quantification of IONPs [ 163 ]. In a comparative analysis of ESR and ICP-OES to quantify IONPs in a glioma bearing rat model, ICP-OES was unable to detect IONPs in the tumor, brain, and kidney compared to ESR.…”

Section: Quantification Of Ionpsmentioning

confidence: 99%

In Vitro/In Vivo Toxicity Evaluation and Quantification of Iron Oxide Nanoparticles

Patil

Adireddy

Jaiswal

et al. 2015

IJMS

171

117

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Increasing biomedical applications of iron oxide nanoparticles (IONPs) in academic and commercial settings have alarmed the scientific community about the safety and assessment of toxicity profiles of IONPs. The great amount of diversity found in the cytotoxic measurements of IONPs points toward the necessity of careful characterization and quantification of IONPs. The present document discusses the major developments related to in vitro and in vivo toxicity assessment of IONPs and its relationship with the physicochemical parameters of IONPs. Major discussion is included on the current spectrophotometric and imaging based techniques used for quantifying, and studying the clearance and biodistribution of IONPs. Several invasive and non-invasive quantification techniques along with the pitfalls are discussed in detail. Finally, critical guidelines are provided to optimize the design of IONPs to minimize the toxicity.

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“…Nanomaterials have unique characteristics like higher specific surface area [19], crystallinity, high porosity, low density [20], quantum confinement with discrete energy levels [21], ballistic electronic transport [22], and depressed melting temperature [23]. As a result of these characteristics, nanomaterials show enhanced photo catalytic activity [24], better paramagnetic properties [25], enhanced charged separation and migration properties [26], improved diffusion rate and reactivity [23], and superior mechanical properties [27] compared to its bulk counterpart.…”

Section: Advanced Coating Materials For Energy Applicationsmentioning

confidence: 99%

Coatings for Energy Applications

Keshri

Sribalaji

2015

Thin Film Structures in Energy Applications

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This chapter aims at providing an understanding about the potential applications of various types of coatings in energy sector. As the energy demands are growing day by day, there is need of enhancing the efficiency of energy systems, which can be enhanced using the advanced coatings. This chapter summarizes about the application of thin films and thick coatings of conventional/nanomaterials in both renewable and non-renewable energy sectors. A comparison between the efficiencies of systems with and without coatings has also been addressed. The importance and challenges associated with adding nanomaterials like carbon nanotubes (CNT), graphene, and various nanostructures with conventional coating material have also been discussed. This chapter can lead to better fundamental understanding about the coatings, which ensures new designs, high efficiency, and large application of coatings in energy sector. IntroductionEnergy has been the part of our life, especially electricity plays a vital role in our modern society. With an ever-increasing population, energy demand also growing faster for the past few decades. To meet the increased demand, every country has started to explore different energy systems to produce and store electricity in an efficient and most importantly in the eco-friendly way [1]. Hence, by increasing energy production, emission of greenhouse gases like carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O) also rises to its peak. In order to decrease the emission of greenhouse gases, a worldwide initiation has also been in progress. Energy conservation steps have been introduced, either by reducing CO 2 emission from non-renewable sources like coal, natural gas, petroleum, and nuclear sources; or by avoiding such emissions using renewable energy sources as wind, water, sunlight, or biomass.

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Electron paramagnetic resonance as an effective method for a characterization of functionalized iron oxide

Cited by 20 publications

References 25 publications

Influence of Magnetic Nanoparticles on the Focused Ultrasound Hyperthermia

Influence of Magnetic Nanoparticles on the Focused Ultrasound Hyperthermia

In Vitro/In Vivo Toxicity Evaluation and Quantification of Iron Oxide Nanoparticles

Coatings for Energy Applications

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