Quantum dot/polyaryletherketone nanometer composite material and preparing method thereof

A nanocomposite material, polyaryletherketone technology, applied in the direction of conjugated synthetic polymer rayon, rayon manufacturing, filament/wire molding, etc., can solve the small size of CdS quantum dots, easy to agglomerate, and limit applications etc. to achieve excellent thermal stability, uniform fiber diameter distribution, and enhanced luminous performance

Active Publication Date: 2019-07-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, CdS quantum dots are extremely small in size, large in specific surface area, and have a large number of defects on the surface, and are prone to agglomeration during the formation process, which limits its application in luminescence.

Method used

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  • Quantum dot/polyaryletherketone nanometer composite material and preparing method thereof
  • Quantum dot/polyaryletherketone nanometer composite material and preparing method thereof
  • Quantum dot/polyaryletherketone nanometer composite material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Add 4.3246g (13.5mmol) phenolphthalein monomer and 3.5429g (15mmol) 2,4' , 6-trifluoro-benzophenone, followed by the addition of 0.9781 g (4.725 mmol) of anhydrous potassium carbonate and 1.5026 g (9.45 mmol) of anhydrous sodium carbonate.

[0026] Step 2: Add 18mL solvent sulfolane and 15mL water-carrying agent toluene into the system, heat to toluene reflux (130°C, corresponding to the salt-forming step described in the summary of the invention) under nitrogen gas under agitation, and reflux for 3 hours to ensure the removal of the system After the water in the solution, toluene was released.

[0027] The third step: using the step-by-step heating method, the temperature of the system was raised to 160°C, 180°C, 200°C, and 220°C for 2 hours each. After the reaction is completed, discharge the mixture solution into hydrochloric acid aqueous solution, pulverize it with a powder machine, and wash the material several times with boiling distilled water and ethano...

Embodiment 2

[0032] Step 1: Add 4.0827g (12.74mmol) phenolphthalein monomer and 2.7819g (12.74mmol) 4,4-difluorobenzophenone monomer and 3.1659g (22.93mmol) anhydrous potassium carbonate in a 100mL three-necked flask .

[0033] Step 2: Add 18 mL of dimethyl sulfoxide and 13 mL of toluene into the three-necked flask. Install a nitrogen vent on the three-necked flask, a stirring paddle, and a water device, and heat it to toluene reflux (145° C., the content of the invention to form a salt) under the condition of nitrogen, and release water and toluene after 3 hours.

[0034] The third step: raise the temperature of the reaction system to 180° C., and react for 4 hours. After the reaction is completed, the material is discharged into an aqueous solution of hydrochloric acid. The polymer was pulverized and washed three times with hot water and cold ethanol to remove solvents and small molecules. Vacuum drying at 90°C to obtain linear benzene carboxyl side group polyaryletherketone.

Embodiment 3

[0036] Add 7.7108g of N,N-dimethylformamide and 1.0479g of linear phenylcarboxy side group polyaryletherketone to the sample bottle, stir for 12h, pour into a 10mL syringe, install it on an electrospinning device, use aluminum foil as a receiving plate, and use a needle The distance from the receiving plate is 15cm, the injection speed is 1-2mL / h, and the voltage is 15-20kv. Drying the obtained fiber membrane at 80-100° C. for 24 hours under true conditions to obtain a linear phenylcarboxy side group polyaryletherketone fiber membrane.

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Abstract

The invention discloses a quantum dot/polyaryletherketone nanometer composite material and a preparing method thereof, and belongs to the technical field of nanometer fibers. According to the preparing method, firstly, a phenolphthalin monomer and a 4,4-difluorobenzophenone monomer are subjected to a polycondensation reaction to prepare linear benzene carboxyl side group polyaryletherketone. The linear benzene carboxyl side group polyaryletherketone material is an excellent peculiar plastic which is resistant to acid and alkali, resistant to corrosion and thermally stable. The benzene carboxylside group polyaryletherketone is mixed with a quantum dot in a solution form, namely CdS/hyperbranched polyaryletherketone, and then a fibrous membrane material is formed through an electrostatic spinning technology. The membrane integrates the high fluorescence performance of the quantum dot and the stability of the linear polymer, the quantum dot is uniformly dispersed under an electrostatic spinning condition, and a membrane material capable of being used for photoelectric devices is obtained. Compared with a membrane which is not doped with quantum dots, the fluorescence intensity and thermal stability of the membrane doped with the quantum dot are both greatly improved.

Description

technical field [0001] The invention belongs to the technical field of nanofibers, and in particular relates to a linear benzene carboxyl side group polyarylether ketone and a film material with luminescent effect in an electrospun fiber film and doped with quantum dots and a preparation method thereof. Background technique [0002] CdS quantum dots can adjust the fluorescent color by changing the diameter in the visible light range without changing the chemical composition or crystal structure. Because of this special property, it has a wide range of applications in solar cells, sensors, and fluorescent probes. However, the size of CdS quantum dots is extremely small, the specific surface is large, and there are a large number of defects on the surface, which is prone to agglomeration during the formation process, which limits its application in luminescence. The existing method of preparing quantum dots with high fluorescence performance by using polymers as templates can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F8/16C08G65/40D01D5/00D04H3/009D04H3/033
CPCC08G65/4025D01D5/003D01D5/0076D01D5/0092D01F1/10D01F8/16D04H3/009D04H3/033
Inventor 江东郭易乔张煜晗谭皓元
Owner JILIN UNIV
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