Research Paper

Journal of Nanoparticle Research

, Volume 12, Issue 2, pp 513-519

Functionalization of carbon encapsulated iron nanoparticles

  • Arthur TaylorAffiliated withDepartment of Urology, Medical Faculty, Dresden University of TechnologyInstitute for Solid State and Materials Research (IFW) Email author 
  • , Yulia KrupskayaAffiliated withInstitute for Solid State and Materials Research (IFW)
  • , Sara CostaAffiliated withKnowMatTech, West Pomeranian University of Technology
  • , Steffen OswaldAffiliated withInstitute for Solid State and Materials Research (IFW)
  • , Kai KrämerAffiliated withDepartment of Urology, Medical Faculty, Dresden University of Technology
  • , Susanne FüsselAffiliated withDepartment of Urology, Medical Faculty, Dresden University of Technology
  • , Rüdiger KlingelerAffiliated withInstitute for Solid State and Materials Research (IFW)
  • , Bernd BüchnerAffiliated withInstitute for Solid State and Materials Research (IFW)
  • , Ewa Borowiak-PalenAffiliated withKnowMatTech, West Pomeranian University of Technology
    • , Manfred P. WirthAffiliated withDepartment of Urology, Medical Faculty, Dresden University of Technology

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Abstract

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.

Keywords

Magnetic nanoparticles Functionalization Chemical treatment Diimide-activated amidation Nanomedicine