Unlock instant, AI-driven research and patent intelligence for your innovation.

Purification method of quantum dots

A purification method and quantum dot technology, applied in the field of quantum dots, can solve problems such as the inability to effectively separate quantum dot products from impurities in the system, and achieve high reproducibility and easy operation

Active Publication Date: 2020-06-23
TCL CORPORATION
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a method for purifying quantum dots, which aims to solve the problem that the existing methods cannot effectively separate quantum dot products from impurities in the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Purification method of quantum dots
  • Purification method of quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] combine figure 1 and figure 2 As shown, the purification method of the quantum dots of the present embodiment includes the following steps:

[0047] (1) Provide copper-sulfur-indium ternary quantum dots treated with 1,3-butadiene with a mass of 1.2 g;

[0048] (2) Preparation of bromine elemental gel chromatography: take 1.2 g of 5% bromine elemental toluene solution, add 1.5 g of agarose gel, and then ultrasonically mix for 20 minutes;

[0049] (3) After the coagulation of bromine-doped single substance gel chromatography is completed, mix the copper-sulfur-indium ternary quantum dots treated with 1,3-butadiene in step 1 with glycerin at a mass ratio of 2:1, and use a syringe Add to sample well. Heat the sample hole to 50 degrees Celsius with a thermocouple and react for 20 minutes;

[0050] (4) Turn on the electrophoresis voltage to 15V, carry out the reaction for 15 minutes, and then irradiate with ultraviolet light to cut off the bands that do not contain fluor...

Embodiment 2

[0052] combine figure 1 and figure 2 As shown, the purification method of the quantum dots of the present embodiment includes the following steps:

[0053] (1) Provide 18g of organic-inorganic perovskite quantum dots treated with 1,3,5-hexatriene;

[0054] (2) Preparation of gel chromatography doped with hydrogen chloride: Take 18g of hydrogen chloride in biphenyl solution and add 45g of polyacrylamide gel, then ultrasonically mix for 40 minutes;

[0055] (3) After the gel chromatography doped with hydrogen chloride is solidified, the organic-inorganic perovskite quantum dots treated with 1,3,5-hexatriene in step 1 and neopentyl glycol in a mass ratio of 45:1 Mix and add to the sample well with a syringe. Add 0.1ml hydrogen peroxide, etc., heat to 40 degrees Celsius, and react for 30 minutes;

[0056] (4) Turn on the electrophoresis voltage to 45V, react for 30 minutes, cut off the strips that do not contain fluorescent halides, and redissolve the remaining strips to obta...

Embodiment 3

[0058] combine figure 1 and figure 2 As shown, the purification method of the quantum dots of the present embodiment includes the following steps:

[0059] (1) Provide 10g of InP quantum dots treated with cyclobutene;

[0060] (2) Preparation of gel chromatography doped with hypoiodous acid: take 10 g of anthracene solution of 5 mol / L hypoiodous acid, add 25 g of glucose gel, and then ultrasonically mix for 25 minutes;

[0061] (3) After the gel chromatography doped with hypoiodous acid is solidified, mix the InP quantum dots treated with cyclodibutene and diethylene glycol at a mass ratio of 20:1 in step 1, and add the above Sample hole. Use 50 watts of ultraviolet light to illuminate for 15 minutes to carry out catalytic initiation reaction;

[0062] (4) Turn on the electrophoresis voltage to 25V, react for 35 minutes, cut off the strips that do not contain fluorescent halides with UV light, and redissolve the remaining strips to obtain pure quantum dots.

[0063] In s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a quantum dot purification method, which comprises the following steps: providing a quantum dot solution, which comprises quantum dots and free olefin; providing a gel plate, which comprises gel and a halogen simple substance solution or a halogen compound solution doped in the gel; applying the quantum dot solution to the gel plate, so that the free olefin reacts with thehalogen simple substance or halogen compound to obtain a reaction product; providing a voltage for the gel plate, so that the reaction product is subjected to electrophoresis towards one end close tothe positive electrode of the power supply on the gel plate; wherein the applying position of the quantum dot solution on the gel plate is a certain distance away from the positive electrode of the power supply; and separating at the quantum dot solution applying position on the gel plate to obtain purified quantum dots. Based on the electrophoresis effect, residual olefin in the quantum dots canbe effectively removed.

Description

technical field [0001] The invention relates to the field of quantum dots, in particular to a method for purifying quantum dots. Background technique [0002] Quantum Dot (Quantum Dot) and quantum dot-related materials and devices have been hailed as one of the core technological engines of today's Industry 4.0 era. Because each small particle is a single crystal particle, and the size has good tunability, it has high color purity, wide color gamut, high crystal stability, narrow and symmetrical fluorescence emission spectrum, wide and continuous ultraviolet absorption spectrum, which makes it an ideal new material for printed displays. [0003] It is well known that in optoelectronic lighting and display devices, the purity requirements for optoelectronic starting materials are very high. The introduction of small and trace amounts of olefins will not only affect the optical and electrical properties of the photoelectric material itself, but more seriously, olefins will i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D57/02
CPCB01D57/02
Inventor 邓承雨芦子哲杨一行
Owner TCL CORPORATION