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技术 >> 制备氧化铁纳米粒子

Preparation of Uniform and Size Tunable Iron Oxide Magnetic Nanocrystals

 

   

    Iron oxide magnetic nanocrystals (MNCs) are nanocrystals that exhibit magnetic properties. They are currently being tested for various applications such as magnetic seals, cell sorting, magnetic resonance imaging (MRI), gene therapy, etc. Iron oxide nanocrystals hold d promise for various applications because they are maneuverable with remote magnetic fields. In biomedical applications, MNCs can be coated with various marker molecules to make them selectively adhere to target analytes. The MNCs can be used to deliver anti-cancer drugs or radioactive materials directly to a specific site such as tumor. These particles can also be designed to attach to cancerous tissue and then heated with a remote alternating magnetic field that selectively kill cancer cells in a process called magnetic hyperthermia.

    The conventional methods of preparing iron oxide nanocystals are based on the co-precipitation of ferro- and ferric salts in the aqueous phase at room temperature in the presence of stabilizing agents. With the support of the DOD, Ocean NanoTech has embarked on recent developments in the preparation of iron oxide magnetic nanocrystals. It involves the use of inorganic solvent and high temperature (ca. 300°C) and demonstrates significant improvement in the size tunability, the monodispersity, narrow size distribution, and the crystalline structure of Ocean’s iron oxide magnetic nanocrystals. This method is anticipated to improve the performance of the iron oxide magnetic nanopcrystals for existing applications as well as open avenues of opportunities for new applications. To find more information about our superparamagnetic iron oxide nanocrystal products please click here.