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US 9,914,666 B2Granted
Nanoheterostructure and method for producing the same
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsHiroaki Wakayama, Hirotaka Yonekura, Hiromitsu Tanaka
Life of this patent
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Abstract
A nanoheterostructure includes a first inorganic component and a second inorganic component one of which is a matrix, and the other of which is three-dimensionally and periodically arranged in the matrix, and has a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
Claims9
A method for producing a nanoheterostructure, comprising:
- a first step of preparing a raw material solution by dissolving, in a solvent,
- a block copolymer comprising at least a first polymer block component and a second polymer block component which are immiscible but linked to each other,
- a first inorganic precursor having a solubility parameter different from that of the first polymer block component by 2 (cal/cm3)1/2 or less, and
- a second inorganic precursor having a solubility parameter different from that of the second polymer block component by 2 (cal/cm3)1/2 or less;
- and
- a second step including
- a phase-separation treatment for forming a nanophase-separated structure in which at least a first polymer phase comprising the first polymer block component with the first inorganic precursor introduced thereinto and a second polymer phase comprising the second polymer block component with the second inorganic precursor introduced thereinto are regularly arranged by self-assembly,
- a conversion treatment for converting the first inorganic precursor and the second inorganic precursor to a first inorganic component and a second inorganic component, respectively, and
- a removal treatment for removing the block copolymer from the nanophase-separated structure, to thereby obtain a nanoheterostructure comprising the first inorganic component and the second inorganic component,
- said second step including a step of carrying out a heat treatment on the raw material solution in an inert gas atmosphere as the phase-separation treatment, the conversion treatment and the removal treatment.
7 more elements
A method for producing a nanoheterostructure comprising:
- a first step of preparing a raw material solution by dissolving, in a solvent,
- a block copolymer comprising at least a first polymer block component and a second polymer block component which are immiscible but linked to each other,
- a first inorganic precursor having a solubility parameter different from that of the first polymer block component by 2 (cal/cm3)1/2 or less, and
- a second inorganic precursor having a solubility parameter different from that of the second polymer block component by 2 (cal/cm3)1/2 or less;
- and
- a second step including
- a phase-separation treatment for forming a nanophase-separated structure in which at least a first polymer phase comprising the first polymer block component with the first inorganic precursor introduced thereinto and a second polymer phase comprising the second polymer block component with the second inorganic precursor introduced thereinto are regularly arranged by self-assembly,
- a conversion treatment for converting the first inorganic precursor and the second inorganic precursor to a first inorganic component and a second inorganic component, respectively, and
- a removal treatment for removing the block copolymer from the nanophase-separated structure, to thereby obtain a nanoheterostructure comprising the first inorganic component and the second inorganic component,
- said nanoheterostructure comprising the first inorganic component and the second inorganic component one of which is a matrix, and the other of which is three-dimensionally and periodically arranged in the matrix, and
- said nanoheterostructure having a three-dimensional periodic structure whose average value of one unit length of a repeated structure is 1 nm to 100 nm.
8 more elements
Dependencies are inferred from the claim text.