Metal-organic polymer composite structure and production thereof
AssigneeJapan Science and Technology Corporation
InventorsYoshinori Funaki, Kiyoharu Tsutsumi, Takeji Hashimoto, Masafumi Harada
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Abstract
There are disclosed a metal-organic polymer composite structure, particularly a porous metal-organic polymer composite structure, for use as functional materials such as catalysts, and a method for producing the structure. The composite structure is composed of a microphase-separated structure from a block copolymer in which a metalphilic polymer chain and a metalphobic polymer chain are bonded together at each end, and ultrafine metal particles are contained in the metalphilic polymer phase of the microphase-separated structure.
Claims9
A method for producing a metal-organic polymer composite structure comprising a microphase-separated structure from a block copolymer in which a metalphilic polymer chain and a metalphobic polymer chain which are incompatible with each other are bonded together at each end, wherein ultrafine metal particles having a particle size up to 10 nanometers are contained in the metalphilic polymer phase of said microphase-separated structure, comprising the steps of
- i) dissolving a non-water-soluble organic polymer, a solvent-soluble metal compound and a reducing agent in an organic solvent, and then heating the solution for reduction at 50 to 120.degree. C. to produce a metal-organic polymer complex in which said ultrafine metal particle is protectively coated with the non-water-soluble organic polymer, and
- ii) producing a solution or a melt in which said metal-organic polymer complex and a matrix block copolymer compatible with the complex are randomly mixed, and forming a microphase-separated structure from said matrix block copolymer by a solvent casting or a decrease in temperature, thereby introducing said ultrafine metal particles into the polymer phase.
A method for producing a metal-organic polymer composite structure comprising a microphase-separated structure from a block copolymer in which a metalphilic polymer chain and a metalphobic polymer chain which are incompatible with each other are bonded together at each end, wherein ultrafine metal particles having a particle size up to 10 nanometers are contained in the metalphilic polymer phase of said microphase-separated structure, comprising the steps of
- i) dissolving a block copolymer in which a metalphilic polymer chain and a metalphobic polymer chain are bonded together at each end, a solvent-soluble metal compound and a reducing agent in an organic solvent, and then heating the solution for reduction at 50 to 120.degree. C. to produce a metal-organic polymer complex in which said ultrafine metal particle is protectively coated with said block copolymer, and
- ii) producing a solution or a melt in which said metal-organic polymer complex is randomly mixed, and forming a microphase-separated structure from said metal-organic polymer complex by a solvent casting or a decrease in temperature.
Dependencies are inferred from the claim text.