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Highly effective two-color white light high polymer material and method for making same

A polymer material and two-color technology, applied in the direction of luminescent materials, chemical instruments and methods, sustainable buildings, etc., can solve the problems that the efficiency is still far from practicality, and achieve high electroluminescence efficiency, electroluminescence The effect of stable spectrum and low energy consumption

Active Publication Date: 2006-07-12
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: by introducing a small amount of orange-light naphthalimide units into the blue-light polyfluorene polymer luminescent material, a white electroluminescent polymer with a very stable spectrum is obtained. The efficiency of the single-layer device reaches 3.8cd / A, and the color coordinates Yes (0.35, 0.32), but its efficiency is far from practical (Chinese patent application number: 200410010770.0, US patent application number: 11 / 042,193)

Method used

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  • Highly effective two-color white light high polymer material and method for making same
  • Highly effective two-color white light high polymer material and method for making same
  • Highly effective two-color white light high polymer material and method for making same

Examples

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Effect test

Embodiment 1

[0023] Example 1: Preparation of 4,7-bis(4-(N-phenyl-N-(4-methylphenyl)amino)phenyl)-2,1,3-benzothiadiazole

[0024] Under the protection of nitrogen atmosphere, 4,7-dibromo-2,1,3-benzothiadiazole (1.47g, 5.0mmol), tributyl (4-(N-phenyl-N-(4- Methylphenyl) amino)-phenyl) tin (6.03g, 11mmol), tetrakis (triphenylphosphine) palladium (0.057g, 0.05mmol), the mixture of toluene (100ml) was reacted at 100°C for 30 hours , and then the reaction mixture was poured into potassium fluoride aqueous solution, extracted with chloroform, then washed three times with water, dried, concentrated, and column separated to obtain pure intermediate product 4,7-bis(4-(N-phenyl-N-(4- Methylphenyl)amino)-phenyl-)-2,1,3-benzothiadiazole 2.340 g, yield 72%.

Embodiment 2

[0025] Example 2: 4,7-bis(4-(N-(4-bromophenyl)-N-(4-methylphenyl)amino)-phenyl-)-2,1,3-benzo Synthesis of Thiadiazoles

[0026] Under the protection of nitrogen atmosphere, 4,7-bis(4-(N-phenyl-N-(4-methylphenyl)amino)-phenyl-)-2,1,3-benzothiadi Azole (0.651g, 1mmol) was dissolved in chloroform, aluminum trichloride was added, and then tetrabutylammonium tribromide (1.446g, 3mmol) was added in batches several times, and reaction was carried out for 30 minutes after adding, and then the reaction mixture was used Washed once with aqueous sodium bisulfite solution, washed several times with water, dried, concentrated, and separated by column to obtain pure intermediate product 4,7-bis(4-(N-(4-bromophenyl)-N-(4-methylbenzene Base) amino)-phenyl-)-2,1,3-benzothiadiazole 0.751g, yield 93%.

Embodiment 3

[0027] Example 3: Synthesis of two-color white light polymer material P1 (structural formula shown below)

[0028]

[0029]Under nitrogen protection, 9,9-dioctyl-2,7-dibromofluorene (0.2740g, 0.4997mmol), 9,9-dioctyl-2,7-(trimethylene Borate)fluorene (0.2792g, 0.5mmol), 4,7-bis(4-(N-(4-bromophenyl)-N-(4-methylphenyl)amino)-phenyl- )-2,1,3-benzothiadiazole (0.0005g, 0.0006mmol), 2M potassium carbonate aqueous solution (2mL), toluene (10mL), methyl trioctyl ammonium chloride (0.13g) mixture, in React at 80°C for ten minutes, then add tetrakis(triphenylphosphine)palladium into the reaction bottle, stir at 90°C for 48 hours, then stir at 60°C for 24 hours. The reaction mixture was dissolved in chloroform, washed several times with water, dried, concentrated, and then settled three times with methanol. The product was placed in a Soxhlet extractor and extracted with acetone for 24 hours. Then it was dissolved in chloroform, settled in methanol, and the product was vacuum-dried...

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Abstract

The invention relates to a highly effective two-tone white light high molecular material and it's preparing method in the field of lighting material technology. The chemical structure of the highly effective two-tone white light high molecular material is as the right type, wherein x=0.00001-0.5. The preparing method is that it uses polymer fluorenes as blue light structure unit, 4, 7-2 (4-(N-phenyl -N-(4-methyl phenyl) amino) phenyl)-2, 1, 3 -benzodithiazole as orange light structure unit, it uses combined polymerization mode to lead the orange light work unit into the blue light macromole fundamental chain by chemical key mode to prepare for the highly effective two-tone white light high molecular material.

Description

technical field [0001] The invention belongs to a high-efficiency two-color white light polymer material and a preparation method thereof. technical background [0002] Since Burroughs et al. of the University of Cambridge reported the electroluminescence phenomenon of poly-p-phenylene vinylene (PPV) for the first time in 1990, polymer electroluminescent materials and devices (PLEDs) have the advantages of simple process, low cost, and easy realization of large-screen Outstanding features such as displays and flexible displays have received a lot of attention and investment. So far, red, green, and blue polymer luminescent materials have met the requirements for practical use; in contrast, the performance indicators of white polymer luminescent materials, including efficiency, life, color coordinates, etc., are still far from practical use. There is a big gap, but white polymer luminescent materials and devices have very broad application prospects in background light sourc...

Claims

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Application Information

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IPC IPC(8): C09K11/06
CPCY02B20/181Y02B20/00
Inventor 王利祥刘俊程延祥耿延候谢志元
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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