US 8,940,937 B2 · Method for producing selectively functionalized carbon nanotubes

Abstract

Disclosed is a novel method for the selective molecular conversion of raw material carbon nanotubes containing a mixture of metallic carbon nanotubes and semiconductive carbon nanotubes in a manner that is based on the electrical properties or diameter of the carbon nanotubes. The present invention causes a photoreaction of raw material carbon nanotubes containing a mixture of metallic carbon nanotubes and semiconductive carbon nanotubes with a disulfide or a sulfide of the following formula (I) or (II) (wherein R1 and R2 each independently represent a hydrocarbon group that may have a substituent) in an organic solvent that contains the raw material carbon nanotubes and the disulfide of the formula (I) or the sulfide of the formula (II), so as to selectively functionalize the metallic carbon nanotubes, or functionalize the carbon nanotubes diameter selectively.

Claims10

Dependent claims

A method for producing selectively functionalized metallic carbon nanotubes from a raw material carbon nanotubes containing a mixture of metallic carbon nanotubes and semiconductive carbon nanotubes,

the method comprising adding a disulfide or a sulfide of the following formula (I) or (II)
wherein R1 and R2 each independently represent a hydrocarbon group that may have a substituent,
to an organic solvent that contains oxygen to produce an intermediate, and adding the raw material carbon nanotubes containing the mixture of metallic carbon nanotubes and semiconductive carbon nanotubes to the intermediate, wherein the intermediate is reacted with the metallic carbon nanotubes, so as to selectively functionalize the metallic carbon nanotubes.

A method for producing selectively functionalized carbon nanotubes by a diameter thereof from a raw material carbon nanotubes containing a mixture of metallic carbon nanotubes and semiconductive carbon nanotubes,

the method comprising adding a disulfide or a sulfide of the following formula (I) or (II)
wherein R1 and R2 each independently represent a hydrocarbon group that may have a substituent,
to an organic solvent that contains oxygen to produce an intermediate, and adding the raw material carbon nanotubes containing the mixture of metallic carbon nanotubes and semiconductive carbon nanotubes to the intermediate, wherein the intermediate is reacted with carbon nanotubes having a diameter, so as to selectively functionalize the carbon nanotubes having the diameter.

Dependencies are inferred from the claim text.

Method for producing selectively functionalized carbon nanotubes

Life of this patent

Method for producing selectively functionalized carbon nanotubes

Life of this patent

Abstract

Claims10