Method and reagent for increasing yield of selectively dispersed semiconducting carbon nanotubes

A semiconducting and carbon nanotube technology, which is applied in the field of improving the yield of selectively dispersed semiconducting single-wall carbon nanotubes and the separation of semiconducting single-wall carbon nanotubes, can solve the problem of high semiconductor purity, low purity and low yield. and other problems, to achieve the effect of improving repeatability and stability, wide source of raw materials, and reducing costs
CN107487767BActive Publication Date: 2020-05-19SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Publication Date
2020-05-19

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Abstract

The invention discloses a method and a reagent for increasing the yield of selectively dispersed semiconducting carbon nanotubes. The method comprises: uniformly mixing the single-wall carbon nanotube sample, the first polymer and the second polymer in a solvent to form a liquid phase mixing system, and fully dispersing the single-wall carbon nanotube sample in the liquid phase mixing system, Afterwards, the liquid-phase mixed system is centrifuged to separate the supernatant to realize the selective separation of semiconducting single-walled carbon nanotubes; both the first polymer and the second polymer can specifically bind to semiconducting single-walled carbon nanotubes, And the binding speed of the first polymer and the semiconducting single-walled carbon nanotube is greater than the binding speed of the second polymer and the semiconducting single-walled carbon nanotube, and the binding strength is lower than that of the second polymer and the semiconducting single-walled carbon nanotube Bond strength. The invention can realize selective separation of semiconducting single-wall carbon nanotubes with high yield, high purity and high dispersibility, reduces cost, and improves separation repeatability and stability.
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Description

technical field

[0001] The invention relates to a method for separating semiconducting single-walled carbon nanotubes, in particular to a method for increasing the yield of selectively dispersed semiconducting single-walled carbon nanotubes, which belongs to the technical field of carbon nanotubes. Background technique

[0002] Carbon Nanotubes (CNTs for short) is a new type of carbon structure discovered in 1991. It is a tube formed by graphene sheets formed by carbon atoms. Carbon nanotubes have small diameters and large aspect ratios, and are considered quasi-one-dimensional nanomaterials. Because carbon nanotubes have excellent electrical properties and super mechanical properties, they have attracted great attention in the field of materials.

[0003] Due to their excellent electrical properties, single-walled carbon nanotubes (SWCNTs) have broad application prospects in the field of electronics, and are important candidates for the next generation of semiconductor mat...

Claims

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