Functionalization of carbon encapsulated iron nanoparticles
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Carbon-encapsulated magnetic nanoparticles are a new class of materials where the core magnetic nanoparticle is protected from reactions with its environment by graphite shells. Having a structure similar to carbon nanotubes, these nanoparticles could be potentially functionalized using methods which are already applied to those structures. We present the effects of acidic treatments based on HCl, HNO3, and H2SO4 on these nanoparticles highlighting the impact on their magnetic and surface properties. We show that acidic treatments based on HNO3 can be successfully applied for the generation of carboxylic groups on the surface of the nanoparticles. Using methylamine as a model, we demonstrate that these functional groups can be used for further functionalization with amino-containing biomolecules via diimide-activated amidation.
KeywordsMagnetic nanoparticles Functionalization Chemical treatment Diimide-activated amidation Nanomedicine
This research was supported by the European Community through the Marie Curie Research Training Network CARBIO under Contract MRTN-CT-2006-035616.
- Ando B, Ascia A, Baglio S, Pitrone N (2006) Development of novel ferrofluidic pumps. In: Engineering in Medicine and Biology Society EMBS 2006. 28th Annual International Conference of the IEEE, pp 2828–2831Google Scholar
- El-Gendy AA, Ibrahim EMM, Khavrus VO, Krupskaya Y, Hampel S, Leonhardt A, Büchner B, Klingeler R (2009) The synthesis of carbon coated Fe, Co and Ni nanoparticles and an examination of their magnetic properties. Carbon 47:2821–2828Google Scholar
- Hirsch A, Vostrowsky O (2005) Functionalization of carbon nanotubes. Top Curr Chem 245:193–237Google Scholar