One-step solvothermal synthesis of highly water-soluble, negatively charged superparamagnetic Fe3O4 colloidal nanocrystal clusters.

One-step ligand exchange and switching from hydrophobic to water-stable hydrophilic superparamagnetic iron oxide nanoparticles by mechanochemical milling.

We describe a simple, rapid methodology for the synthesis of water-stable iron oxide nanoparticles (IONPs) compatible with a variety of aqueous buffers, based on mechanochemical milling exchange of covalently bound surface ligands on pre-fabricated oleic acid-protected IONPs. Application of milling for IONP ligand exchange eliminates steps required for transforming hydrophobic into negatively c...

One-pot synthesis of magnetic colloidal nanocrystal clusters coated with chitosan for selective enrichment of glycopeptides.

Selective enrichment of glycopeptides prior to the mass spectrometry (MS) analysis is essential due to ion suppression effect during ionization caused by the co-presence of non-glycosylated peptides. Among the enrichment approaches, hydrophilic interaction liquid chromatography (HILIC) based on magnetic separation has become a popular method in recent years. As the conventional synthesis proced...

Synthesis of magnetic graphene-Fe3O4 nanocomposites by electrochemical exfoliation method

Superparamagnetic few-layer graphene nanocomposites (FLG- NCs) can be used for many technological applications, such as solar cells, batteries, touch panels and supercapacitors. In this work, we applied electrochemical exfoliation method as a simple, one step and economical technique to fabricate FLG- NCs. The fabricated Superparamagnetic FLG- NCs were characterized by X-ray diffraction (XRD), ...

Superparamagnetic magnetite colloidal nanocrystal clusters.

Chemical "top-down" synthesis of amphiphilic superparamagnetic Fe3O4 nanobelts from exfoliated FeOCl layers.

A novel chemical "top-down" method has been employed to prepare tiny Fe3O4 nanobelts. Uniform Fe3O4 nanobelts were obtained by solvothermal reduction of exfoliated FeOCl layers with the assistance of high polar solvents and a PEO-PPO-PEO stabilizer. We also studied the superparamagnetic properties of Fe3O4 nanobelts, which exhibit a magnetic saturation value as high as ∼53 emu g(-1) at room tem...