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RESEARCH PRODUCT

Phase separated Cu@Fe3O4 heterodimer nanoparticles from organometallic reactants

Kerstin SchneiderIrene AmentThomas D. SchladtUte KolbHaitao GaoRobert BranscheidMuhammed Nawaz TahirCarsten SönnichsenWolfgang TremelFilipe NatalioStefan A. L. WeberBahar NakhjavanLaura M. Schreiber

subject

Magnetic domainMagnetometerChemistryNanoparticleGeneral Chemistryequipment and suppliesDark field microscopylaw.inventionSQUIDCrystallographylawTransmission electron microscopyPhase (matter)Mössbauer spectroscopyMaterials Chemistryhuman activities

description

Cu@Fe3O4 heteroparticles with distinct morphologies were synthesized from organometallic reactants. The shape of the magnetic domains could be controlled by the solvent and reaction conditions. They display magnetic and optical properties that are useful for simultaneous magnetic and optical detection. After functionalization, the Cu@Fe3O4 heterodimers become water soluble. The morphology, structure, magnetic and optical properties of the as-synthesized heterodimer nanoparticles were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), mossbauer spectroscopy, superconducting quantum interference device (SQUID) magnetometry, and dark field imaging. A special advantage of these heterodimers lies in the fact that the nanodomains of different composition can be used e.g. for the formation of nitric oxide (NO) through the Cu domain and heterodimer nanoparticles can be removed from the reaction mixture by means of the magnetic domain (Fe3O4).

yearjournalcountryeditionlanguage
2011-01-01Journal of Materials Chemistry
https://doi.org/10.1039/c1jm10922g