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Magnetic polymers.

U.S. Patent 8,658,751 (February 25, 2014), "Molecule-Based Magnetic Polymers and Methods," Chang Dae Han and Wenyi Huang (University of Akron, Akron, Ohio, USA).

Magnets are indispensable in many mechanical and electronic devices. Traditional magnets are transition, lanthanide, or actinide metals. The magnetism arises from the magnetic dipole moment of unpaired electrons in the d- or f-orbitals. Previous research attempts to design and synthesize organic molecular magnets and high-spin molecules have been unsuccessful.

Han and Huang developed magnetic polymers with high Curie temperatures. These are polymers of an organometallic monomer with unpaired electrons. The monomers form donor-acceptor polymers with an electron acceptor, including transition metals, iron, cobalt, or nickel within a ferrocene, cobaltocene, or nickelocene monomer. The monomers can then be polymerized to covalently linked, molecule-based magnetic groups. The synthesized polymers are soluble in organic solvents, since they may have long, flexible, bulky side chains.

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Author:Corneliussen, Roger
Publication:Plastics Engineering
Article Type:Brief article
Geographic Code:1USA
Date:Jun 1, 2014
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