Carbon nanotube structure-selective separation and surface fixation

A technology for carbon nanotubes and nanotubes, which is used in the field of concentrating and refining carbon nanotubes, high-selectivity separation, and can solve the problems of low accuracy of single-walled tubes, undescribed carbon nanotubes, and poor separation accuracy.
CN1922106BInactive Publication Date: 2010-05-12JAPAN SCI & TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JAPAN SCI & TECH CORP
Publication Date
2010-05-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of separating, concentrating or purifying uniform carbon nanotubes with desired properties (diameter, chiral vector, etc.) in a highly sensitive manner by the use of structure-sensitive properties peculiar to carbon nanotubes; and an apparatus therefor. There is provided a method of separating, concentrating or purifying carbon nanotubes with desired properties contained in a sample, comprising the steps of (a) irradiating a sample containing carbon nanotubes with light; and (b) selecting carbon nanotubes with desired properties. In a preferred embodiment, the light irradiation of thestep (a) can be carried out in the presence of a metal so as to cause specified carbon nanotubes to selectively induce a photocatalytic reaction, resulting in metal deposition. Further, in a preferred embodiment, a given magnetic field can be applied in the step (b) so as to attain accumulation or concentration of carbon nanotubes with metal deposited.
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Description

technical field

[0001] The present invention relates to a method and equipment for separating, concentrating and refining carbon nanotubes (CNT) with high selectivity. The present invention also relates to high purity carbon nanotubes isolated by the method of the present invention, and thin films and arrays thereof. The present invention further provides an optical device or an electronic device using the carbon nanotube film. Background technique

[0002] Carbon nanotubes, a new substance discovered by Sumio Iijima in 1991, can exhibit metallic and / or semiconducting properties depending on their diameter and how the tube is wound. The physical properties of carbon nanotubes are completely different depending on the structure of the tubes, and research in this field is currently being actively carried out. In addition, carbon nanotubes are one of the next-generation materials many of which are expected to be used in devices and the like, and have promising applications in...

Claims

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