Chemically synthesized superparamagnetic nanoparticles are widely used in biology and medicine for applications that include biomolecule purifications and cell separations, magnetic resonance imaging (MRI) contrast agents, and biomagnetic sensing. Magnetic nanoparticles with high moments are often desired to produce large signals for biomagnetic sensing or to avoid restrictive requirements for ...

Objective (s): SN38 is the prominent and effective anticancer drug for treating various types of human cancers such as colorectal, ovarian and lung cancers. SN38 is highly toxic, and due to its poor solubility in aqueous media, and low stability and hydrolysis at physiological pH, it has not been used as an anti-cancer drug. To overcome these problems, SN38 was conjugated with new nanocarriers ...

This communication describes the co-assembly of polydopamine spheres, either bare or coated with Fe3O4 magnetic nanoparticles, with the short aromatic peptide diphenylalanine. The combination of polydopamine particles and diphenylalanine generated tubular structures decorated with adhesive spherical particles, while the co-assembly of the polydopamine spheres coated with magnetic Fe3O4 nanopart...

We investigated the magnetic control of Mn photoluminescence (PL) in iron oxide/l-cysteine-capped zinc sulfide (Fe3O4/l-cys ZnS:Mn) nanocomposites via temperature- and field-dependent PL intensity studies. Fe3O4/l-cys ZnS:Mn was synthesized following a wet chemical deposition route then its physicochemical, morphological, properties were characterized. X-ray diffraction analysis indicates forma...

The magnetic hydrogels were successfully fabricated by chemically cross-linking of gelatin hydrogels and Fe3O4 nanoparticles (ca. 40–60 nm) through genipin (GP) as cross-linking agent. The cross-sectional SEM observation demonstrates that the Fe3O4 nanoparticles were fairly uniformly distributed in the gelatin matrix. Moreover, in vitro release data reveal that drug release profile of the resul...

The Fe3O4@C core-shell magnetic nanoparticles with an average size of about 190 nm were synthesized via a one-pot solvothermal process using ferrocene as a single reactant. The sulfonic acid-functionalized Fe3O4@C magnetic nanoparticles were obtained by grafting the sulfonic groups on the surface of Fe3O4@C nanoparticles to produce magnetically recyclable solid acid catalysts. The as-prepared p...

Hyperthermia is one of the promising treatments for cancer therapy. However, the development of a magnetic fluid agent that can selectively target a tumor and efficiently elevate temperature while exhibiting excellent biocompatibility still remains challenging. Here a new core-shell nanostructure consisting of inorganic iron oxide (Fe3O4) nanoparticles as the core, organic alginate as the shell...

Water-solublel-arginine-capped Fe3O4 nanoparticles were synthesized using a one-pot and green method. Nontoxic, renewable and inexpensive reagents including FeCl3,l-arginine, glycerol and water were chosen as raw materials. Fe3O4 nanoparticles show different dispersive states in acidic and alkaline solutions for the two distinct forms of surface bindingl-arginine. Powder X-ray diffraction and X...