Magnetic-fluorescent (MF) multifunctional materials have been paid more attention because of the promising application in biological and biomedical fields including bioimaging, drug delivery, and bioseparation. In this presentation, we describe the fabrication of new multifunctional MF adducts consisting of Fe3O4 magnetic particles (MPs) and Cu-In-S based quantum dots (QDs). Monodispersed Fe3O4 MPs with controlled sized (6 to 10 nm) were synthesized using thermal decomposition at a high temperature (300 �C) and high quality Cu-In-S based QDs with tunable colors in the range of green to NIR were synthesized by thermal decomposition using DDT as a stabilizing ligand and S-source. Then water-soluble MPs with free amino groups and QDs with carboxylic acid groups were generated after the surface ligand exchange. MF adducts can be easily fabricated after EDC-mediated coupling reaction in an aqueous buffer (PBS or MES). The optical properties and magnetic properties of these MF adducts were investigated using UV-vis spectroscopy, fluorescence spectroscopy, and magnetic resonance imaging (MRI).

Fabrication of multifunctional adducts of Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles and Cu-In-S based quantum dots

246th National Meeting (2013)

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Fabrication of multifunctional adducts of Fe3O4 magnetic nanoparticles and Cu-In-S based quantum dots

Fabrication of multifunctional adducts of Fe₃O₄ magnetic nanoparticles and Cu-In-S based quantum dots