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Method for synthesizing polymer of poly-triphenylamine

A technology of polytriphenylamine and triphenylamine, which is applied in the field of polymer chemistry, can solve the problems of long reaction time and insufficient yield, and achieve the effects of shortened reaction time, good product quality and high yield

Inactive Publication Date: 2007-08-15
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This laboratory has used the oxidative coupling method to obtain polytriphenylamine under liquid phase conditions with triphenylamine as raw material in the presence of Lewis acid, which simplifies the synthesis method and improves the polymerization yield (Chinese patent ZL02139146.7, 2004, September, 29 authorization), but this method requires the use of toxic solvent chloroform, the reaction time is longer, and the yield is still not high enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Put 0.75 gram of triphenylamine in the mortar, add 1.5 grams of anhydrous iron trichloride, grind for 30 minutes at 20 ℃, dissolve and wash iron trichloride with 30 milliliters of ethanol and filter to obtain the crude product; 20~30 After drying at ℃, dissolve the crude product with 10 milliliters of chloroform, and remove the insoluble matter by filtration; add 40 milliliters of methanol to the filtrate, a solid product precipitates out, filter the product and dry it at 50 ℃ to obtain 0.55 grams of light flesh red product , yield 74%.

Embodiment 2

[0012] Example 2: Put 0.75 g of triphenylamine in a mortar, add 3.0 g of anhydrous ferric chloride, grind for 30 minutes at 20° C., wash and dissolve ferric chloride with 30 ml of ethanol and filter to obtain a crude product; 20 to 30 After drying at ℃, the crude product was dissolved in 10 ml of chloroform. The insoluble matter was removed by filtration, 40 ml of methanol was added to the filtrate, a solid product precipitated out, the product was filtered and dried at 50° C. to obtain 0.65 g of a light flesh red product with a yield of 88%.

Embodiment 3

[0013] Embodiment 3: Put 0.75 gram of triphenylamine in the mortar, add 4.5 grams of anhydrous iron trichloride, grind for 15 minutes at 20 ℃, dissolve and wash iron trichloride with 30 milliliters of ethanol and filter to obtain the crude product; 20~30 After drying at ℃, dissolve the crude product with 10 milliliters of chloroform, remove the insoluble matter by filtration, add 40 milliliters of methanol to the filtrate, a solid product precipitates out, filter the product and dry it at 50 ℃ to obtain 0.60 grams of light flesh red product , yield 81%.

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PUM

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Abstract

A process for synthesizing polytriphenylamine as electric hole conducting material from triphenylamine includes such steps as solid-phase grinding under existence of Lewis acid, separating and purifying. Its advantages are simple process, low cost, high output rate and no environmental pollution.

Description

technical field [0001] The invention relates to a method for synthesizing polytriphenylamine polymers, belonging to the field of polymer chemistry. Background technique [0002] Polytriphenylamine polymer is widely used in electroluminescence and other photoelectric conversion devices as an effective hole transport compound. Triphenylamine dimers, polymers, star compounds or copolymers with other aromatic molecules can be used as the hole transport layer of electroluminescent devices. The methods for synthesizing polytriphenylamine hole materials include Grignard reagent method, Ulman reaction method, oxidative coupling method, electrochemical oxidation method and the like. The Grignard reagent method is commonly used to synthesize polytriphenylamine in the laboratory, but it is difficult to be used in industrial production because of its harsh synthesis conditions and cumbersome synthesis steps. Literature Chemistry letter, pp1145-1148, 1989 reported that copper powder wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
Inventor 詹才茂张静宇白卫斌
Owner WUHAN UNIV
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