Polymerizable quantum dot and application thereof

A quantum dot, polymer-based technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of reducing the optical properties of quantum dot packages, difficult to increase the concentration of quantum dots, easy to contact with water or oxygen, etc. Optical properties and quantum efficiency, good optical properties, high concentration effect

Active Publication Date: 2016-10-19
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after improving the compatibility between quantum dots and polymer materials, there are still the following problems: ① It is difficult to increase the concentration of quantum dots in the quantum dot package, which reduces the optical performance of the quantum dot package; The combination with the poly

Method used

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  • Polymerizable quantum dot and application thereof
  • Polymerizable quantum dot and application thereof
  • Polymerizable quantum dot and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0067] The present invention also provides a method for preparing a quantum dot package, including the following steps;

[0068] S1: Introduce polymerizable groups on the surface of quantum dots to form quantum dot composites;

[0069] S2: Mix the quantum dot composite with a liquid polymer material precursor, and the polymer material precursor can undergo a polymerization reaction after being initiated by the initiator;

[0070] S3: Initiate polymerization reaction of polymer material precursors by light or heating, and solidify into polymer materials. During the polymerization process, part of the polymer material precursors and polymerizable groups undergo copolymerization reaction to make quantum dots and polymer The materials are held together by covalent bonds.

[0071] In the preparation method of the present invention, the polymerizable group on the surface of the quantum dot can undergo polymerization reaction with the polymer material precursor. In order to make the polymer...

Example Embodiment

[0084] Example 1

[0085] Preparation of quantum dot ligand SH-CO-O-PEG-O-CO-CH=CH2

[0086] Take 50mmol PEG400 and 25mmol dithiodipropionic acid into the reaction vessel, and add 100ml dichloromethane, 30ml diisopropyl methanol and 16.2g 4-dimethylaminopyridine-p-toluenesulfonate, at room temperature Esterification reaction takes place, stirring at room temperature for 24h; the resulting product is blown into argon at 0°C for 30min, 100mol triethylamine is added for 30min, 10mmol acryloyl chloride is slowly added dropwise at 0°C under argon atmosphere, and stirring is continued for 24h; Wash and extract three times with saturated aqueous sodium chloride solution. If the emulsification is serious, separate the two phases by centrifugation. Dry the extracted organic phase with saturated sodium sulfate and rotary evaporation to remove the solvent to obtain a viscous liquid; add 100ml volume ratio to the viscous liquid For 4:1 water and ethanol, add 2g of sodium borohydride, stir for...

Example Embodiment

[0091] Example 2

[0092] The difference from Example 1 is that when preparing the quantum dot package, a chloroform solution of a quantum dot composite containing 50 mg of quantum dots and 500 mg of acrylic UV glue are taken.

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Abstract

Provided is a polymerizable quantum dot. The surface of the quantum dot is modified with ligands, and at least one part of the ligands comprise polymerizable groups which can be subjected to copolymerization with other monomers or prepolymers. According to the polymerizable quantum dot, more quantum dots can be dissolved in a high polymer material, the concentration of the quantum dots in the high polymer material can be increased, a better optical property is achieved, and application of the quantum dots is promoted. The invention further provides a quantum dot dispersoid, a quantum dot packaging body, a backlight module, a lighting device and a preparation method of the quantum dot packaging body.

Description

technical field [0001] The present invention relates to a polymerizable quantum dot. [0002] The invention also relates to a quantum dot dispersion, a quantum dot package and a preparation method thereof. [0003] The invention also designs a backlight module and a lighting device prepared by the quantum dot package. Background technique [0004] Quantum dots, also known as nanocrystals, are materials with a size of several nanometers, usually in the range of 1-20 nanometers, and a crystalline structure. Quantum dots can fluoresce when excited by an appropriate light source or voltage. Quantum dots have been extensively studied in the past two decades due to their special properties, such as size-tunable optical properties, high quantum efficiency, relatively narrow half-width, and resistance to photodegradation. As a new generation of luminescent materials, quantum dots are gradually emerging in LED display applications. The quantum dot material can effectively improve...

Claims

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Application Information

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IPC IPC(8): C09K11/02C08F290/14
CPCC08F290/142C09K11/025
Inventor 王允军席玉坤方龙魏登科
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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