Three-dimensional periodic structure, three-dimensional periodic porous structure, and method for producing these
AssigneeKawamura Institute of Chemical Research
InventorsNorimasa Fukazawa, Ren-Hua Jin
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Abstract
The three-dimensional periodic structure of the present invention comprises a matrix made of an inorganic oxides in which core-shell particles are disposed so as to contact with each other, the core-shell particles each comprising a core portion made of a fine particle and a shell portion made of a crosslinked hydrophilic organic polymer backbones, wherein the hydrophilic organic polymer backbones and the inorganic oxides hybridize into an organic/inorganic a composite.
Claims17
A three-dimensional periodic structure comprising a matrix made of inorganic oxides in which core-shell particles are disposed so as to contact with each other, the core-shell particles each comprising a core portion made of a fine particle and a shell portion made of a crosslinked hydrophilic organic polymer backbones, wherein the hydrophilic organic polymer backbones and the inorganic oxides hybridize into an organic/inorganic composite.
A three-dimensional periodic porous structure comprising a matrix made of an inorganic oxide in which pores having a pore size within a range from 20 nm to 10 μm are arranged with three-dimensional periodicity, wherein a thickness of the porous structure on a line connecting centers of adjacent pores is within a range from 5 nm to 10 μm.
A method for producing a three-dimensional periodic structure, comprising the steps of:
- (1) dispersing core-shell particles in an aqueous solvent to obtain a dispersion, the core-shell particles each comprising a core portion made of a fine particle and a shell portion made of a crosslinked hydrophilic organic polymer backbones, and
- (2) adding metal alkoxides to the dispersion thereby to cause a sol-gel reaction of the metal alkoxides producing a structure in which the fine particles of the core portions are arranged with three-dimensional periodicity in a composite comprising the crosslinked hydrophilic organic polymer backbones and inorganic oxides produced by the sol-gel reaction of the metal alkoxides, which are integrated with each other.
A method for producing a three-dimensional periodic porous structure, comprising the steps of:
- (i) dispersing core-shell particles in an aqueous solvent to obtain a dispersion, the core-shell particles each comprising a core portion made of a fine particle of an organic polymer compound and a shell portion made of a crosslinked hydrophilic organic polymer backbones,
- (ii) adding a metal alkoxide to the dispersion thereby to cause a sol-gel reaction of the metal alkoxides producing a structure in which the fine particles of the core portions are arranged with three-dimensional periodicity in a composite material comprising the crosslinked hydrophilic organic polymer backbones and an inorganic oxide produced by the sol-gel reaction of the metal alkoxides, which are hybridized into organic/inorganic domain, and
- (iii) removing the fine particles in the structure.
Dependencies are inferred from the claim text.