Synthesis method, product and application of C3N4 quantum dot room-temperature phosphorescent material

A room temperature phosphorescence, C3N4 technology, applied in the field of materials, can solve the problems of limitation, cytotoxicity, high cost, etc.

Active Publication Date: 2020-10-27
广安长明高端产业技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials often have disadvantages such as high cost, cytotoxicity, and complicated preparation process.
In addition, the phosphorescence lifetime of many traditional phosphorescent materials can only reach microseconds to several milliseconds, such a short decay time is limited in many fields of continuous light emission.

Method used

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  • Synthesis method, product and application of C3N4 quantum dot room-temperature phosphorescent material
  • Synthesis method, product and application of C3N4 quantum dot room-temperature phosphorescent material
  • Synthesis method, product and application of C3N4 quantum dot room-temperature phosphorescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] With urea as reactant C 3 N 4 The synthesis of quantum dot room temperature phosphorescent materials, the specific steps are as follows:

[0028] (1) After grinding 20g of urea into off-white flour, transfer it to a reactor made of quartz glass with a volume of 50mL;

[0029] (2) The liner is then loaded into a high-temperature and high-pressure reactor according to the regular process;

[0030] (3) Set the reaction temperature to 300°C, the pressure to 8Mpa, the time to 3h, and the stirrer speed to 500rpm;

[0031] (4) After the reaction is over, wait for the reactor program to return to normal temperature and pressure, take out the liner and scrape the yellow-brown crude product;

[0032] (5) Ultrasonic dispersion of the crude product in an aqueous solution, followed by suction filtration with a filter membrane with a pore size of 220 nm;

[0033] (6) wash with dilute hydrochloric acid and ethanol successively, neutralize the product and remove other organic by-pr...

Embodiment 2

[0036] With hydroxyurea as reactant C 3 N 4 The synthesis of quantum dot room temperature phosphorescent materials, the specific steps are as follows:

[0037] (1) Grinding 10g of hydroxyurea into an off-white flour and transferring it to a reactor made of quartz glass with a volume of 50mL;

[0038] (2) The liner is then loaded into a high-temperature and high-pressure reactor according to the regular process;

[0039] (3) Set the reaction temperature as 250°C, the pressure as 4Mpa, the time as 2h, and the stirring bar rotating speed as 800rpm;

[0040] (4) After the reaction is over, wait for the reactor program to return to normal temperature and pressure, take out the liner and scrape the brown crude product;

[0041] (5) Ultrasonic dispersion of the crude product in an aqueous solution, followed by suction filtration with a filter membrane with a pore size of 220 nm;

[0042] (6) wash with dilute hydrochloric acid and ethanol successively, neutralize the product and r...

Embodiment 3

[0045] The synthesis of C3N4 quantum dot room temperature phosphorescent material with biuret as reactant, the specific steps are as follows:

[0046] (1) After grinding 15g of biuret into off-white flour, transfer to a reactor made of quartz glass with a volume of 50mL;

[0047] (2) The liner is then loaded into a high-temperature and high-pressure reactor according to the regular process;

[0048] (3) Set the reaction temperature to 270°C, the pressure to 5Mpa, the time to 3h, and the stirring bar speed to 500rpm;

[0049] (4) After the reaction is over, wait for the reactor program to return to normal temperature and pressure, take out the liner and scrape the brown crude product;

[0050] (5) Ultrasonic dispersion of the crude product in an aqueous solution, followed by suction filtration with a filter membrane with a pore size of 220 nm;

[0051] (6) wash with dilute hydrochloric acid and ethanol successively, neutralize the product and remove other organic by-products;...

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Abstract

The invention discloses a synthesis method of a C3N4 quantum dot room-temperature phosphorescent material and a product and application thereof. The synthesis method comprises the following steps of:taking urea or other urea-like small molecules as raw materials and carrying out a high-temperature solid-phase reaction in a high-pressure reaction kettle to obtain a product which is grey white powder, has solid-phase fluorescence and can continuously emit macroscopic blue-green phosphorescence for 3-6 seconds at room temperature. The preparation method is simple, and the product contains no harmful metal and is a novel room-temperature phosphorescent material; and the C3N4 quantum dot room-temperature phosphorescent material has potential application value in the fields of 3D printing, anti-counterfeiting, decoration, imaging and the like.

Description

technical field [0001] The present invention relates to the field of materials, in particular to C 3 N 4 The invention relates to a method for synthesizing quantum dot room-temperature phosphorescent materials, and also relates to products and applications made by the method. Background technique [0002] Room temperature phosphorescent materials are widely used in organic electronics, optoelectronic devices, chemical and biological detection and other fields. Traditional phosphorescent materials are mostly inorganic materials containing rare earth elements, noble metal complexes and pure organic compounds. However, these materials often have disadvantages such as high cost, cytotoxicity, and complicated preparation process. In addition, the phosphorescence lifetime of many traditional phosphorescent materials can only reach microseconds to several milliseconds, and such a short decay time is limited in many fields of continuous light emission. [0003] C 3 N 4 It is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082C09K11/65B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C01B21/0605C01P2002/82C01P2002/84C01P2004/04C01P2004/64C09K11/0883C09K11/65
Inventor 刘畅陈久存黄孝华
Owner 广安长明高端产业技术研究院
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