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Sulfonated mono-layer graphite and polymer compound material and preparation and application thereof

A technology of sulfonated single-layer and composite materials, which is applied in semiconductor/solid-state device manufacturing, electrical components, circuits, etc., can solve the problems of high price, affecting device performance, electrode instability, etc., and achieve the effect of cheap price

Inactive Publication Date: 2009-03-11
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the air, when PEDOT-PSS is in contact with ITO (Indium Tin Oxides), PSS can react with ITO, which leads to electrode instability and affects the performance of the device.
Also, PEDOT-PSS is only soluble in water and is expensive

Method used

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  • Sulfonated mono-layer graphite and polymer compound material and preparation and application thereof
  • Sulfonated mono-layer graphite and polymer compound material and preparation and application thereof
  • Sulfonated mono-layer graphite and polymer compound material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: slight sulfonated graphite material preparation method

[0027] Functionalized monolayer graphite (average thickness 0.8nm, average area 400μm 2 ) (Carbon, 2004, 42, 2929) (225 mg) was uniformly dispersed in water (225 ml), and ultrasonically dispersed to form a uniform and clear solution. Use 5% sodium carbonate solution to adjust the pH value of the single-layer graphite solution to 9-10. An aqueous solution (67.5 ml) of sodium borohydride (2.7 g) was added dropwise to the above solution, and the reaction was carried out at 80° C. for 90 minutes. During the reaction, a black precipitate appeared. After the reaction, centrifuge, wash with water, leave the solid, and remove the upper liquid. Repeat the operation five times. The solid was re-sonicated in water (225ml). A mixed solution of 2 g of diazonium salt (4-sulfobenzenediazonium chloride), water (200 ml), and hydrochloric acid (0.2 g, 1 N) was added. The reaction was carried out under ice bath f...

Embodiment 2

[0028] Embodiment 2: preparation method of sulfonated graphite material

[0029] Slightly sulfonated monolayer graphite (50mg) was dispersed in 50ml of fuming sulfuric acid, and after reacting at 80°C for 3 hours, nitrous acid (1.15g), p-aminobenzenesulfonic acid (2.886g) and azobisiso Butyronitrile (0.137g) was added to the above reaction solution to react for 2 hours. After the reaction, it was cooled to room temperature and slowly added to water (500ml). Filter with a 0.2μ water membrane, wash the filter residue repeatedly with water and acetone, and dry at 50°C to obtain a sulfonated single-layer graphite material. Elemental analysis shows that the number ratio of sulfur:carbon atoms is 1:48. The maximum solubility of sulfonated monolayer graphite can reach 10mg / ml.

Embodiment 3

[0030] Embodiment 3: chemical preparation method of sulfonated monolayer graphite / PEDOT composite material

[0031] After the sulfonated monolayer graphite material (10 mg) was ultrasonically dispersed in water (10 ml), EDOT (3,4-ethylenedioxythiophene) (100 mg) and anhydrous ferric sulfate (10 mg) were added to the above solution. React at 50°C for 48 hours. After the reaction, the reaction solution was poured into methanol (100 ml), and stirred vigorously for 1 hour. Filter and wash the filter residue with water and acetone repeatedly until there is no 3,4-ethylenedioxythiophene in the filtrate. After drying, a sulfonated single-layer graphite-doped polyPEDOT composite was obtained. Elemental analysis shows that the ratio of sulfur to carbon atoms is 1:13. 1522cm -1 It is the C=C vibrational absorption peak on PEDOT, 1316cm -1 It is the C-C vibration absorption peak on PEDOT, 1199, 1087cm -1 It is the C-O-C vibration absorption peak on PEDOT, 982, 839689cm -1 It is the...

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Abstract

The invention relates to a sulphonated monolayer graphite and polymer composition material and preparation and application thereof, in particular to a composite material which is formed by taking sulphonated monolayer graphite materials as a dopant and doping PEDOT (poly(3, 4-ethylene dioxy thiophene)). The composite material is prepared by the following compositions in weight portion: 0.1 to 100 portions of the sulphonated monolayer graphite materials and 0.1 to 100 portions of polymer. The sulphonated monolayer graphite and polymer composition material has high transmission and high conduction, can be dissolved into water and an organic solvent, and has cheap price. The sulphonated monolayer graphite and polymer composition material can be widely applied to organic photoelectric devices such as organic electroluminescent displays, organic solar cells and so on, and the sulphonated monolayer graphite and polymer composition material is hopeful to replace PSS (polystyrolsulfon acid)-PEDOT to become a novel hole transport material.

Description

technical field [0001] The invention relates to the preparation of functional composite materials, in particular to a sulfonated single-layer graphite and polymer composite material and its preparation and application. Background technique [0002] In recent years, optoelectronic devices, including electroluminescent and photovoltaic devices, have been widely used in many fields. Remarkable achievements have been made in video digital display, instrument monitoring, and solar cells. However, they also have many shortcomings, such as poor device stability and high cost, which need to be further improved. Electrodes are an important part of devices, and the development of new electrode materials has become a frontier subject of extensive research. Currently widely used in device electrode materials are mainly PEDOT (3,4-ethylenedioxythiophene)-PSS (polystyrene sulfonic acid) products produced by H.C. Starck-CLEVIOS company. PEDOT-PSS [poly(3,4-ethylenedioxythiophene)-poly(s...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08L79/02C08L79/04C08K9/00C08J3/215C08G61/12H01L51/00H10K99/00
Inventor 陈永胜万相见许艳菲马延风黄毅
Owner NANKAI UNIV
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