Aqueous soluble ferrimagnets stabilized by block copolymers
US10738174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2012 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Oct 4, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a water-soluble polymer complex that includes a water-soluble block copolymer and a magnetic nanoparticle, wherein the water-soluble polymer complex has a nonzero net magnetic moment in the absence of an applied magnetic field at ambient temperatures. The water-soluble block copolymer is preferably a diblock or triblock copolymer and the magnetic nanoparticle is preferably a ferrimagnetic or ferromagnetic nanoparticle. The water-soluble complexes may be derivatized with reactive groups and conjugated to biomolecules. Exemplary water-soluble polymer complexes covered under the scope of the invention include PEG112-b-PAA40 modified CoFe2O4; NH2-PEG112-b-PAA40 modified CoFe2O4; PNIPAM68-b-PAA28 modified CoFe2O4; and mPEG-b-PCL-b-PAA modified CoFe2O4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.