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Heterometallic Co-Dy SMMs grafted on iron oxide nanoparticles
Lidia Rosado Piquer1, Jan Dreiser2, E Carolina Sañudo1
1Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain. esanudo@ub.edu and Institut de Nanociència i Nanotecnologia IN2UB, Universitat de Barcelona, Carrer Martí i Franquès 1-11, 08028 Barcelona, Spain.
Abstract:
Heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NPs) with an oleate self-assembled monolayer (SAM) as a surfactant. The obtained hybrid molecular-inorganic system 1-NP has been thoroughly characterized. The oleate SAM separates SMM 1 from the magnetic substrate to avoid the strong-coupling between the surface and molecule to ensure that 1 retains its magnetic properties in 1-NP. The magnetic properties of the hybrid system 1-NP have been characterized by element specific XMCD: the heterometallic SMM retains its magnetic properties on the surface of the iron oxide NPs while there is an enhancement of the magnetic properties of the NPs.
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