Magnetic and near-infrared derived heating characteristics of dimercaptosuccinic acid coated uniform Fe@Fe3O4 core–shell nanoparticles

• Main Authors: Changhyuk Koo, Hwichan Hong, Pyung Won Im, Hoonsub Kim, Chaedong Lee, Xuanzhen Jin, Bingyi Yan, Wooseung Lee, Hyung-Jun Im, Sun Ha Paek, Yuanzhe Piao
• Format: Article
• Language: English
• Published: SpringerOpen 2020-06-01
• Series: Nano Convergence
• Subjects: Magnetic nanoparticles; Core–shell nanoparticle; Hyperthermia; Photothermal material
• Online Access: http://link.springer.com/article/10.1186/s40580-020-00229-4

Abstract Among the number of hyperthermia materials, magnetic nanoparticles have received much attention. In this work, we studied the heating characteristics of uniform Fe@Fe3O4 core–shell nanoparticle under near-infrared laser irradiation and external AC magnetic field applying. The Fe@Fe3O4 core–shell nanoparticles were prepared by thermal decomposition of iron pentacarbonyl and followed by controlled oxidation. The prepared uniform particles were further coated with dimercaptosuccinic acid to make them well dispersed in water. Near-infrared derived photothermal study of solutions containing a different concentration of the core–shell nanoparticles was made by using 808 nm laser Source. Additionally, magnetic hyperthermia ability of the Fe@Fe3O4 nanoparticle at 150 kHz and various oersted (140–180 Oe) condition was systemically characterized. The Fe@Fe3O4 nanoparticles which exhibited effective photo and magnetic hyperthermia are expected to be used in biomedical application.