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US 12,534,371 B2Granted
Method for producing semiconducting single-walled carbon nanotube dispersion
AssigneeKao Corporation
InventorMitsuo Asai
Life of this patent
Estimating the term…
Abstract
An aspect of the present disclosure relates to a method for producing a semiconducting single-walled carbon nanotube dispersion that includes a step of centrifuging a separation target SWCNT dispersion containing SWCNTs that include semiconducting SWCNTs and metallic SWCNTs, an aqueous medium, and a polymer, and then collecting a supernatant liquid containing the semiconducting SWCNTs. The polymer is a copolymer that includes a structural unit A derived from a monomer represented by Formula (1) below and a structural unit B derived from a monomer represented by Formula (3) below. CH2═CR0—COOM (1) CH2═CR5—COO-(EO)p—(PO)q—R6 (3)
Claims20
A method for producing a semiconducting single-walled carbon nanotube dispersion, comprising:
- a step of preparing a separation target single-walled carbon nanotube dispersion containing single-walled carbon nanotubes that include semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes, an aqueous medium, and a polymer;
- and
- a step of centrifuging the separation target single-walled carbon nanotube dispersion and then collecting a supernatant liquid containing the semiconducting single-walled carbon nanotubes from the centrifuged separation target single-walled carbon nanotube dispersion,
- wherein the polymer is a copolymer that includes a structural unit A derived from a monomer represented by Formula (1) below and a structural unit B derived from a monomer represented by Formula (3) below:
- CH2═CR0—COOM (1)
- where R0 represents a hydrogen atom or a methyl group, and M represents one of a hydrogen atom, a metallic atom, and a group having a structure represented by Formula (2) below:
- where R1, R2, R3, and R4 independently represent a hydrogen atom or an alkyl group having 1 or 2 carbon atoms that optionally has a hydroxyl group;
- and
- CH2—CR5—COO-(EO)p—(PO)q—R6 (3)
- where R5 represents a hydrogen atom or a methyl group, and R6 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, EO represents an ethyleneoxy group, PO represents a propyleneoxy group, p represents the average number of moles of the ethyleneoxy groups added and is 1 or more and 120 or less, and q represents the average number of moles of the propyleneoxy groups added and is 0 or more and 50 or less.
7 more elements
A method for separating a semiconducting single-walled carbon nanotube and a metallic single-walled carbon nanotube, comprising:
- a step of preparing a separation target single-walled carbon nanotube dispersion containing single-walled carbon nanotubes that include semiconducting single-walled carbon nanotubes and metallic single-walled carbon nanotubes, an aqueous medium, and a polymer;
- and
- a step of centrifuging the separation target single-walled carbon nanotube dispersion and then collecting a supernatant liquid containing the semiconducting single-walled carbon nanotubes from the centrifuged separation target single-walled carbon nanotube dispersion,
- wherein the polymer is a copolymer that includes a structural unit A derived from a monomer represented by Formula (1) below and a structural unit B derived from a monomer represented by Formula (3) below:
- CH2═CR0—COOM (1)
- where R0 represents a hydrogen atom or a methyl group, and M represents one of a hydrogen atom, a metallic atom, and a group having a structure represented by Formula (2) below:
- where R1, R2, R3, and R4 independently represent a hydrogen atom or an alkyl group having 1 or 2 carbon atoms that optionally has a hydroxyl group;
- and
- CH2═CR5—COO-(EO)p—(PO)q—R6 (3)
- where R5 represents a hydrogen atom or a methyl group, and R6 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, EO represents an ethyleneoxy group, PO represents a propyleneoxy group, p represents the average number of moles of the ethyleneoxy groups added and is 1 or more and 120 or less, and q represents the average number of moles of the propyleneoxy groups added and is 0 or more and 50 or less.
7 more elements
Semiconducting single-walled carbon nanotube-containing ink, comprising:
- semiconducting single-walled carbon nanotubes;
- at least one of an organic solvent and water;
- and
- a copolymer that includes a structural unit A derived from a monomer represented by Formula (1) below and a structural unit B derived from a monomer represented by Formula (3) below:
- CH2═CR0—COOM (1)
- where R0 represents a hydrogen atom or a methyl group, and M represents one of a hydrogen atom, a metallic atom, and a group having a structure represented by Formula (2) below:
- where R1, R2, R3, and R4 independently represent a hydrogen atom or an alkyl group having 1 or 2 carbon atoms that optionally has a hydroxyl group;
- and
- CH2═CR5—COO-(EO)p—(PO)q—R6 (3)
- where R5 represents a hydrogen atom or a methyl group, and R6 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, EO represents an ethyleneoxy group, PO represents a propyleneoxy group, p represents the average number of moles of the ethyleneoxy groups added and is 1 or more and 120 or less, and q represents the average number of moles of the propyleneoxy groups added and is 0 or more and 50 or less.
7 more elements
Dependencies are inferred from the claim text.