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Three-dimensional dendritic conjugated compound-carbon nanotube composition, and preparation method and application

A technology of conjugated compounds and carbon nanotubes, which is applied in chemical instruments and methods, applications, chemical/physical processes, etc., can solve problems that have not been reported in any way, and achieve the effects of superior performance, less compound amount, and simple processing technology

Active Publication Date: 2017-06-13
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the polymers used in the prior art for separating semiconducting single-walled carbon nanotubes are mainly linear structures
So far, there has not been any report on the isolation of semiconducting single-walled carbon nanotubes using compound molecules with a novel three-dimensional fully conjugated spatial stereostructure

Method used

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  • Three-dimensional dendritic conjugated compound-carbon nanotube composition, and preparation method and application
  • Three-dimensional dendritic conjugated compound-carbon nanotube composition, and preparation method and application
  • Three-dimensional dendritic conjugated compound-carbon nanotube composition, and preparation method and application

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preparation example Construction

[0164] The invention also provides a preparation method of the composite ink. Wherein, the composite ink can adopt the following two preparation methods.

[0165] For example, the three-dimensional dendrimer conjugated compound is first dissolved in at least one solvent, and then the commercial large-diameter P2 single-walled carbon nanotubes are uniformly dispersed in the second The three-dimensional tree-shaped conjugated compound solution prepared in one step is finally subjected to short-term high-speed centrifugation, and the supernatant is separated to obtain an ink solution enriched in semiconductor-type large-diameter commercial carbon nanotubes.

[0166] For example, first mix the three-dimensional dendrimer conjugated compound with other organic semiconductor materials, and then dissolve them together in an organic solvent, and then disperse them evenly under the condition of temperature ≤ 0°C, and finally perform short-term high-speed centrifugation , separate the ...

Embodiment 1

[0268] Example 1: Preparation of three-dimensional dendrimer conjugated compound (6T-DPP)-carbon nanotube composite ink

[0269] Weigh 2 mg of commercial large-diameter carbon nanotube P2 sample, dissolve it in 10 ml of toluene solution, then add 6 mg of a three-dimensional dendrimer conjugated compound 6T-DPP with a molecular weight of 4597, and use a power of 60 W in an ice bath The advanced ultrasonic cleaning machine ultrasonically disperses for 30 minutes, so that the polymer can selectively and fully interact with the semiconducting carbon nanotubes to obtain a uniformly dispersed dispersion. After being centrifuged at 15000rpm for 30 minutes, the carbon nanotube bundles in the above dispersion and the metallic carbon nanotubes not coated by the three-dimensional dendrimer conjugated compound are deposited on the bottom of the centrifuge tube, and the supernatant is separated to obtain a high Pure composite ink enriched with large-diameter semiconducting carbon nanotubes...

Embodiment 2

[0270]Example 2: Preparation of three-dimensional dendritic conjugated compound (9T-DPP)-carbon nanotube composite ink

[0271] Weigh 2 mg of commercial large-diameter carbon nanotube P2 sample, dissolve it in 10 ml of toluene solution, then add 6 mg of a three-dimensional dendrimer conjugated compound 9T-DPP with a molecular weight of 4848, and use a power of 60 W in an ice bath The advanced ultrasonic cleaning machine ultrasonically disperses for 30 minutes, so that the polymer can selectively and fully interact with the semiconducting carbon nanotubes to obtain a uniformly dispersed dispersion. After centrifugation at 15,000rpm for 30 minutes, the carbon nanotube bundles in the above dispersion and the metallic carbon nanotubes not covered by the three-dimensional dendrimer conjugated compound were deposited on the bottom of the centrifuge tube, and the supernatant was separated to obtain a high-purity Composite inks enriched with large-diameter semiconducting carbon nanotu...

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Abstract

The invention discloses a three-dimensional dendritic conjugated compound-carbon nanotube composition, and a preparation method and application. A three-dimensional dendritic conjugated compound has a structure shown in a formula (I) or (II) shown in the description, where B is a branched conjugated linking unit, and is selected from a unit formed by a free five-membered or six-membered aromatic unit and having a branched structure; FG is a terminal group function modification unit, and contains a diketopyrrolopyrrole unit shown in a formula (III) shown in the description, m is selected from 2 or 3, and n is selected from 1, 2, 3 or 4. The three-dimensional dendritic conjugated compound can be selectively combined with a semiconductor type carbon nanotube, and can be applied to well selective dispersion of the semiconductor type carbon nanotube as a dispersant, and a composition formed by the three-dimensional dendritic conjugated compound and the carbon nanotube has high semiconductor performance, and can be applied to large-scale commercial production of high-performance printable semiconductor carbon nanotube ink and a high-performance printed electronic device, such as a high-performance printed thin film transistor semiconductor device.

Description

technical field [0001] The present invention specifically relates to a method for dispersing or selectively separating carbon nanotubes, carbon nanotube composites and corresponding preparation methods and applications, such as applications in the preparation of composite inks, thin films and semiconductor devices (such as field effect transistors), It belongs to the field of optoelectronic semiconductor materials and devices. Background technique [0002] Carbon nanotubes are a class of one-dimensional nanomaterials with a unique structure. They have the advantages of good mechanical properties, high charge mobility, excellent electrical properties, good compatibility with flexible substrates, and good chemical and thermal stability. They are widely used in semiconductor electronics. devices have a very wide range of applications. [0003] Carbon nanotubes are usually prepared by chemical vapor deposition (CVD). Under the current preparation conditions, the single-walled c...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09D11/03C08G83/00H01L29/786C09K23/00
CPCH01L29/786C09D11/03C08G83/003C09K23/00
Inventor 高威徐文亚窦军彦赵建文马昌期崔铮
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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