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Organic matter, method and application of separating and purifying semiconducting single-walled carbon nanotubes

A technology of single-wall carbon nanotubes and semiconductors, applied in the field of nanomaterials, can solve the problems of high price, low purity, and single molecular species, and achieve the effects of low cost, good separation purity, and high yield

Active Publication Date: 2020-09-29
BEIJING HUA TAN YUAN XIN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention provides an organic matter for separating and purifying semiconducting single-walled carbon nanotubes, a method for separating and purifying them, and an application thereof to solve the problems in the prior art that the substances used for separating semiconducting single-walled carbon nanotubes have single molecular species and are expensive. Technical defects of low yield and low purity of isolated semiconducting single-walled carbon nanotubes

Method used

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  • Organic matter, method and application of separating and purifying semiconducting single-walled carbon nanotubes
  • Organic matter, method and application of separating and purifying semiconducting single-walled carbon nanotubes
  • Organic matter, method and application of separating and purifying semiconducting single-walled carbon nanotubes

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Embodiment 1

[0048]A method for separating semiconductor single-walled carbon nanotubes, comprising the following steps: 1. 100 mg of benzodithiophene small molecules and carbon nanotube raw materials are mixed in 100 ml of toluene according to a ratio of 1:1, wherein benzodithiophene small molecules Molecule contains an alkyl chain with a length of 8; 2. Ultrasonic for 30 minutes at 150 watts (W) with an ultrasonic cell pulverizer; 3. Take out the dispersion and centrifuge at a centrifugal speed of 8000 revolutions per minute (rpm) for 2 hours ( h); 4. After centrifugation, take the supernatant, in which high-purity carbon nanotubes are suspended.

Embodiment 2

[0050] A method for separating semiconductor single-walled carbon nanotubes, comprising the steps of: 1. 100mg benzodithiophene polymer and carbon nanotube raw materials are mixed in 100ml toluene according to the ratio of 0.5:1; Sonicate at 500W for 45 minutes; 3. Take out the dispersion and centrifuge at a centrifugal speed of 12000 rpm for 2 hours; 4. After centrifugation, take the supernatant, in which high-purity carbon nanotubes are suspended.

Embodiment 3

[0052] A method for separating semiconductor single-walled carbon nanotubes, comprising the steps of: 1. 100mg carbazole-benzodithiophene copolymer and carbon nanotube raw materials are mixed in 100ml toluene according to the ratio of 0.1:1; 2. Ultrasonic cell Sonicate the pulverizer at 20W for 300 minutes; 3. Take out the dispersion and centrifuge at a centrifugal speed of 100,000rpm for 0.5h; 4. After centrifugation, take the supernatant, in which high-purity carbon nanotubes are suspended.

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Abstract

The invention relates to organic matter and method for separation and purification of semiconductor single-walled carbon nanotubes and an application. The separation and purification method comprisesthe following steps: (1), adding benzodithiophene substances and raw materials containing the semiconductor single-walled carbon nanotubes to an organic solvent; (2), treating the organic solvent to separate the semiconductor single-walled carbon nanotubes in the organic solvent. The involved organic matter are the benzodithiophene substances and can be used in the fields of semiconductor devices,integrated circuits, display drivers, transparent conductive films, biological / chemical sensing, infrared detection, infrared thermal therapy and the like. The cost of separating the semiconductor single-walled carbon nanotubes from the raw materials can be reduced with the method, the yield is increased, and purity of the semiconductor single-walled carbon nanotubes is improved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to organic substances, methods and applications for separating and purifying semiconductor single-walled carbon nanotubes. Background technique [0002] Carbon nanotubes are nanomaterials with great potential in semiconductor devices, integrated circuits, and biomedicine. How to disperse and separate carbon nanotubes from raw materials containing impurities is an important research content in this field. [0003] At present, dispersants are mainly used to separate carbon nanotubes from impurities in solvents, and finding suitable dispersants is the main research direction in this field. [0004] Professor Bao Zhenan from Stanford University in the United States proposed carbon nanotubes by separating polythiophenes. Michael S.Arnold of the University of Wisconsin and IBM used copolymers of fluorene and pyridine to separate carbon nanotubes. [0005] The Chinese ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/17
Inventor 韩杰
Owner BEIJING HUA TAN YUAN XIN ELECTRONICS TECH CO LTD