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Di-polyfluorene graft polystyrene

A technology of polystyrene and dimeric fluorene, which is applied in the field of oligofluorene grafted polystyrene, can solve the problems of complex synthesis route, high reaction temperature, low total yield and the like, and achieves simple synthesis route and low reaction temperature. , the effect of less by-products

Inactive Publication Date: 2011-05-18
SHENYANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This type of oligofluorene grafted polystyrene has good photoelectric properties and thermal stability, but the disadvantages are: 1. The synthetic route is complicated and the total yield is low, only 10-15%
2. The reaction temperature is relatively high, generally around 80°C, which is easy to cause side reactions and produce unnecessary impurities, which are difficult to separate and purify
3. The content of oligofluorene fluorescent components in oligofluorene grafted polystyrene cannot be adjusted

Method used

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Embodiment 1

[0020] 1. Synthesis of 2-iodofluorenone: add 20 mmoles of fluorenone, 8 mmoles of iodine powder, 4.8 mmoles of periodic acid, 20 milliliters of acetic acid, 4 milliliters of water in a 50 milliliter round bottom flask, and the concentration of 0.6 milliliters is 98% sulfuric acid. The round bottom flask was placed in a 60°C water bath for 4 hours with constant stirring. After the reaction finished, the mixture in the round bottom flask was poured into the aqueous solution of sodium bisulfite, stirred for 10 minutes, then the solution in the mixture was removed with a suction filter bottle, and the obtained solid was poured into deionized water and washed 3 times. Finally, the solid matter was dried in a vacuum oven, and the obtained light yellow solid was 2-iodofluorenone. Yield 97%.

[0021] 2. Synthesis of dipolyfluorene: 3.0 mmol 2-iodofluorenone, 3.0 mmol 9,9-dibutyl-2-(2-methyl-3-butyne-2-ol) fluorene, 0.3 Millimoles of tetrakistriphenylphosphine palladium, 0.3 mmoles ...

Embodiment 2

[0025] 1. Synthesis of 2-iodofluorenone: add 20 mmoles of fluorenone, 8 mmoles of iodine powder, 4.8 mmoles of periodic acid, 20 milliliters of acetic acid, 4 milliliters of water in a 50 milliliter round bottom flask, and the concentration of 0.6 milliliters is 98% sulfuric acid. The round bottom flask was placed in a 60°C water bath for 4 hours with constant stirring. After the reaction finished, the mixture in the round bottom flask was poured into the aqueous solution of sodium bisulfite, stirred for 10 minutes, then the solution in the mixture was removed with a suction filter bottle, and the solid obtained was poured into deionized water and washed 3 times. Finally, the solid matter is dried in a vacuum oven, and the obtained light yellow solid is 2-iodofluorenone. Yield 97%.

[0026]2. Synthesis of dipolyfluorene: 3.0 mmol 2-iodofluorenone, 3.0 mmol 9,9-dibutyl-2-(2-methyl-3-butyne-2-ol) fluorene, 0.3 Add millimole tetrakistriphenylphosphine palladium, 0.3 millimole ...

Embodiment 3

[0030] 1. Synthesis of 2-iodofluorenone: add 20 mmoles of fluorenone, 8 mmoles of iodine powder, 4.8 mmoles of periodic acid, 20 milliliters of acetic acid, 4 milliliters of water in a 50 milliliter round bottom flask, and the concentration of 0.6 milliliters is 98% sulfuric acid. The round bottom flask was placed in a 60°C water bath for 4 hours with constant stirring. After the reaction finished, the mixture in the round bottom flask was poured into the aqueous solution of sodium bisulfite, stirred for 10 minutes, then the solution in the mixture was removed with a suction filter bottle, and the solid obtained was poured into deionized water and washed 3 times. Finally, the solid matter was dried in a vacuum oven, and the obtained light yellow solid was 2-iodofluorenone. Yield 97%.

[0031] 2. Synthesis of dipolyfluorene: 3.0 mmol 2-iodofluorenone, 3.0 mmol 9,9-dibutyl-2-(2-methyl-3-butyne-2-ol) fluorene, 0.3 Add millimole tetrakistriphenylphosphine palladium, 0.3 millimo...

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Abstract

The invention relates to a di-polyfluorene graft polystyrene which is prepared in the following steps of: 1, synthesizing 2-iodo-fluorenone; 2, synthesizing di-polyfluorene; and 3, synthesizing the di-polyfluorene graft polystyrene. The invention has the following performance that the reaction temperature is low, the reaction can be implemented at room temperature so as to achieve the advantages of less byproducts and easiness for purification; a synthesizing progress is simple and the total yield is higher up to 20% to 30%; and the content of di-polyfluorene fluorescence components in the di-polyfluorene graft polystyrene can be adjusted.

Description

technical field [0001] The present invention relates to oligofluorene grafted polystyrene. Background technique [0002] Since Cambridge University prepared the first polymer electroluminescent device in 1990, the work in this area has been vigorously carried out for more than ten years. Compared with small molecule electroluminescent devices, polymer electroluminescent devices have a wide range of advantages. For example, the starting voltage is low, the stability is good, and the film can be formed by spin coating. Among these polymer electroluminescent materials, polyfluorene can also be used due to its extremely high fluorescence quantum yield, good thermal stability and optical stability, and easy chemical modification to obtain good solubility and processability. Copolymerized with other substances to obtain green light and red light materials, etc., it has been regarded as one of the most promising electroluminescent materials in recent years and has been widely stu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F12/08C08F8/00C07C35/38C07C29/143
CPCY02P20/52
Inventor 胡小丹王少洪侯朝霞
Owner SHENYANG UNIV
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