Abstract
Magnetic nanoparticles (MNPs) have significant interests in a wide range of medical applications, such as a tracer agent in magnetic particle imaging (MPI), contrast enhancement in magnetic resonance imaging (MRI), photothermal therapy treatment, and drug delivery systems. Zinc ferrites (ZnFe2O4) were synthesized by hydrothermal and co-precipitation methods. In this study, the effects of cap** agents on the structural morphology, and magnetic behaviors of ZnFe2O4 nanoparticles were evaluated for MPI applications. The Fourier transform infrared spectroscopy ensured the presence of cap** agents on the structures. The X-ray diffraction technique was used to characterize the structural properties of the synthesized samples. The crystallite size of single-phase cubic spinel zinc ferrite nanoparticles was maintained within 14–18 nm with the effect of cap** agents. All synthesized ZnFe2O4 nanoparticles evaluated with the physical properties measurement method (PPMS) that showed superparamagnetic behavior. The cap** agents polyacrylic acid, lauric acid, and malic acid played a significant role in the controllability of the nanoparticle size. A custom-designed magnetic particle relaxometer (MPR) at 9.9 kHz was used to evaluate the synthesized ZnFe2O4 for MPI applications. The MPR analysis of ZnFe2O4@PAA samples yielded the best results in terms of the shortest effective relaxation time (2.68 µs) and excellent spatial resolution (FWHM, 5.89 mT). The structural and magnetic characterizations of the zinc-based nanoparticles proved that they are suitable for MPI biomedical applications.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This study is supported by the Scientific and Technological Research Council of Türkiye (TUBITAK Grant No: 115E776).
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The funded was provided by Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (Grant No: 115E776).
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ND contributed to the study conception and design. Material preparation, data collection and analysis were performed by ND, GC and MI. The first draft of the manuscript was written by GC. The manuscript was revised by MI. All authors read and approved the final manuscript.
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Dogan, N., Caliskan, G. & Irfan, M. Synthesis and characterization of biocompatible ZnFe2O4 nanoparticles for magnetic particle imaging (MPI). J Mater Sci: Mater Electron 34, 390 (2023). https://doi.org/10.1007/s10854-022-09799-x
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DOI: https://doi.org/10.1007/s10854-022-09799-x