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White light emitting material as well as preparation method and application thereof

A luminescent material and white light technology, which is applied in the field of white light luminescent material and its preparation, can solve problems such as complex preparation methods, and achieve the effect of saving raw material costs, saving raw material and manufacturing process costs

Active Publication Date: 2019-11-01
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the preparation method of white light emitting materials in the above-mentioned prior art is still relatively complicated, and often requires simultaneous doping of multiple materials for use, and there are still very limited reports on white light emitting materials in the prior art. Therefore, a new method has been developed. A new type of white light-emitting material with simple preparation method and low cost is very meaningful

Method used

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  • White light emitting material as well as preparation method and application thereof
  • White light emitting material as well as preparation method and application thereof
  • White light emitting material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0070] In this embodiment, a white light emitting material is synthesized, and the chemical structural formula of the white light emitting material is as follows:

[0071]

[0072] Its preparation method comprises the following steps:

[0073] (1) Put 5.0mmol tris(4-iodophenyl)amine, 21.0mmol 4-methoxyphenylacetylene, 30.0mL tetrahydrofuran, and 7.0mL triethylamine into a 100mL double-necked flask equipped with a stirring bar, and connect return pipe;

[0074] (2) The above reaction mixture is evacuated with a vacuum pump so that the pressure reaches 1×10 -2 After Pa, feed nitrogen, repeat pumping and pass nitrogen three times, keep reaction system nitrogen atmosphere;

[0075] (3) 0.125mmol tetrakis (triphenylphosphine) palladium and 0.8mmol cuprous iodide are added in the above reaction solution under nitrogen environment;

[0076] (4) The above reaction mixture was heated to 70° C. under nitrogen protection, and kept under reflux for 10 hours. Then the solvent was ev...

Embodiment 2

[0081] In this embodiment, a white light emitting material is synthesized, and the chemical structural formula of the white light emitting material is as follows:

[0082]

[0083] Its preparation method comprises the following steps:

[0084] (1) Put 5.0mmol tris(4-iodophenyl)amine, 21.0mmol methyl 4-ethynylbenzoate, 30.0mL tetrahydrofuran, and 7.0mL triethylamine into a 100mL double-necked flask equipped with a stirring bar, and Connect the return pipe;

[0085] (2) The above reaction mixture is evacuated with a vacuum pump so that the pressure reaches 1×10 -2 After Pa, feed nitrogen, repeat pumping and pass nitrogen three times, keep reaction system nitrogen atmosphere;

[0086] (3) 0.125mmol tetrakis (triphenylphosphine) palladium and 0.8mmol cuprous iodide are added in the above reaction solution under nitrogen environment;

[0087] (4) The above reaction mixture was heated to 70° C. under nitrogen protection, and kept under reflux for 10 hours. Then the solvent wa...

Embodiment 3

[0092] This embodiment provides a white light organic light emitting diode, the preparation method of which includes the following steps:

[0093] (1) Place the glass substrate with 200nm anode material ITO in pure water, acetone and isopropanol in sequence, and ultrasonically clean them for 15 minutes respectively;

[0094] (2) spin-coat polyethylenedioxythiophene-poly(styrene sulfonate) with a thickness of 20 nm on the surface of the ITO material after cleaning in step (1);

[0095] (3) Place the product obtained in step (2) on a heating platform and heat it to 150°C, and then keep it for 15 minutes;

[0096] (4) the material that embodiment 1 is made in 10 -5 Under the pressure of Pa and the speed of 0.5 angstroms / second, thermal vacuum evaporation is deposited on the polyethylenedioxythiophene-poly(styrene sulfonate) layer of the product of step (3), forming a white light emitting layer of 40nm;

[0097] (5) Heat the product obtained in step (4) to raise the temperature ...

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Abstract

The invention provides a white light emitting material as well as a preparation method and application thereof. A chemical structural formula of the white light emitting material is represented by a formula (I) shown in the description. The preparation method comprises the following step: carrying out a coupling reaction under protection of a protective gas and catalysis of a Pd / Cu mixed catalystby taking tris(4-iodophenyl)amine and 4-methoxyphenylacetylene or methyl 4-ethynylbenzoate as raw materials to obtain the white light emitting material. According to the invention, the novel temperature-sensitive light emitting material is synthesized through the one-step method, the material is applied to the field of diode luminescence based on the temperature-sensitive characteristic, and whitelight luminescence can be finally realized only by reasonably controlling the temperature and heating time of a substrate; and compared with the prior art, the method provided by the invention greatly saves the raw material costs and the manufacturing process costs, and provides a novel idea and strategy for use of a white organic light emitting diode.

Description

technical field [0001] The invention belongs to the technical field of luminescence and display, and in particular relates to a white light luminescence material and its preparation method and application. Background technique [0002] White light-emitting diodes have gradually replaced traditional incandescent lamps and fluorescent lamps due to their advantages such as high luminous efficiency, low energy consumption, and long service life, and are mainly used in lighting and displays. In recent years, there have been many studies on white light emitting materials. For example, high-efficiency white light emitting materials have been synthesized using rare earth coordination polymers. Rare earth coordination polymers are a class of novel composite materials with diverse structures and strong adjustability. , rich performance and other characteristics. For example, tungstates have proven to be important optical materials due to their stable chemical properties and low phono...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C217/80C07C213/08C07C229/52C07C227/16C09K11/06H01L51/50H01L51/54H10K99/00
CPCC07C217/80C07C229/52C09K11/06C09K2211/1007C09K2211/1014H10K85/631H10K50/11Y02B20/00H10K71/164H10K2102/351C07C213/04C07C227/26H10K50/16H10K50/17H10K50/81H10K50/171H10K71/00
Inventor 黎小蒙崔结顺王湘麟张昭宇
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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