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Dispersant-containing carbon material film containing light-responsive dispersant, and method for producing carbon material film using said dispersant-containing carbon material film

A technology of photoresponsiveness and manufacturing method, applied in the direction of photosensitive materials used in optomechanical equipment, photosensitive material processing, carbon preparation/purification, etc., can solve the problem of no report on carbon material film patterning technology

Inactive Publication Date: 2016-03-23
NAT INST OF ADVANCED IND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Furthermore, regarding carbon black, carbon fiber, graphite particles, etc., which are carbon materials other than CNT, there is no report at all on solubilization / dispersion technology in a solvent and patterning technology for carbon material films for obtaining the carbon material film.

Method used

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  • Dispersant-containing carbon material film containing light-responsive dispersant, and method for producing carbon material film using said dispersant-containing carbon material film
  • Dispersant-containing carbon material film containing light-responsive dispersant, and method for producing carbon material film using said dispersant-containing carbon material film
  • Dispersant-containing carbon material film containing light-responsive dispersant, and method for producing carbon material film using said dispersant-containing carbon material film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147]

[0148] · Preparation of CNT dispersion

[0149] The weighing is represented by the following general formula (II) and R in the formula 3 and R 4 A dispersant aqueous solution was prepared by dissolving 3 mg of a butyl stilbene-based compound in 3 ml of ultrapure water (water purified by Purelab / ELGA). 1 mg of SWCNTs (produced by the HiPco method / NanoIntegris) were weighed and mixed with the above-mentioned dispersant aqueous solution. The mixed aqueous solution was treated with bath-type ultrasonic waves (37 kHz, 80 W, 1 hr) to promote the dispersion of CNTs. The obtained black liquid was centrifuged (25000×g, 4hrs, 5417R / eppendorf) to precipitate impurities such as catalyst metal and amorphous carbon, and 80% of the supernatant was recovered to prepare a CNT dispersion from which the above impurities were removed.

[0150] [hua 2]

[0151]

[0152] Preparation of CNT film containing dispersant

[0153] A fused silica substrate of 3 cm in width x 3 cm in...

Embodiment 2

[0162]

[0163] In the method shown in Example 1, the above-mentioned compound was used as a photo-responsive CNT dispersant, HiPco was used as SWCNT, and a CNT film containing a dispersant was prepared on a PET (toray Lumirror U35, easily accessible untreated surface) substrate. (the weight ratio of CNT to dispersant in the CNT film containing the dispersant is about 1:3, and the content of the liquid solvent is less than 0.1 wt%) and microfabrication via mask exposure (the dispersant content in the patterned CNT film is less than 0.1 wt%). Even if it is a substrate lacking in hydrophilicity such as PET (substrate with poor wetting of the CNT dispersion), the frame can be formed from the Si rubber sheet, so that the cast film can be easily produced. The result of optical microscope observation of the obtained microfabricated film is shown in Figure 8 middle. It was found that the line width of 10 μm or less, which is difficult in screen printing, can be processed.

[01...

Embodiment 3

[0166]

[0167] In the method shown in Example 1, instead of the stilbene-based compound of the general formula (II), an azobenzene-based compound represented by the following general formula (III) (in the formula, R 3 and R 4 As the photoresponsive CNT dispersant, HiPco was used as the SWCNT, and a dispersant-containing CNT film was fabricated on a fused silica substrate (the weight ratio of CNT to dispersant in the dispersant-containing CNT film was about 1:3, the content of the liquid solvent is less than 0.1 wt%) and the microfabrication via mask exposure (the dispersant content in the patterned CNT film is less than 0.1 wt%). The compound represented by general formula (III) is such as Figure 9 As shown in the spectrum of , E-Z isomerization proceeds by irradiating light at 385 nm, and rapidly returns to the E form in the dark. The effect of light irradiation was investigated with respect to the obtained CNT film. UV-visible-near-infrared absorption spectra (385nm, ...

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Abstract

The present invention addresses the problem of providing: a dispersant-containing carbon material film which enables the easy formation of a carbon material film, such as a CNT, that does not contain a dispersant or contains a dispersant in an extremely small amount; and a method for producing a carbon material film, such as a patterned carbon material film, using the dispersant-containing carbon material film. The dispersant-containing carbon material film is characterized by containing a stilbene-type or azobenzene-type dispersant having light responsiveness and represented by general formula (I) [wherein R1 to R6 independently represent a hydrogen atom or a linear C1-5 or branched C3-6 alkyl group; A represents a carbon atom or a nitrogen atom; X represents an anion; and n represents such a numeral value that nX can have a valency of -2].

Description

technical field [0001] The present invention relates to a dispersant-containing carbon material film containing a photo-responsive carbon material dispersant useful for the production of carbon material films represented by carbon nanotubes (CNTs), and using the dispersant-containing carbon material film, A method of manufacturing a carbon material film in which a patterned carbon material film can be obtained, and a method of manufacturing an electronic / electrical device including the method of manufacturing the carbon material film. Background technique [0002] Carbon nanotubes (CNTs) have attracted attention in recent years as a new raw material for nanotechnology. Among them, single-walled carbon nanotubes (SWCNTs) are expected to be used in various fields due to their simple structure and special physicochemical properties. [0003] However, CNTs aggregate (fiber bundles) due to high van der Waals interactions. Therefore, in order to obtain CNT films thereof, and CNT ...

Claims

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Application Information

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IPC IPC(8): C01B31/02B01F17/18B82Y30/00B82Y40/00C09K3/00G03F7/004G03F7/32C07C237/40C07C245/08C09K23/00C09K23/18C09K23/22
CPCB82Y30/00B82Y40/00C07C237/40C07C245/08G03F7/32H01B1/04G03F7/027G03F7/038G03F7/325C01B32/05C01B32/174
Inventor 松泽洋子吉田胜近藤直树木原秀元
Owner NAT INST OF ADVANCED IND SCI & TECH
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