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A kind of compound and its preparation method and application

A compound and selected technology, applied in the preparation of amino compounds, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of restricting the development and application of OLEDs, restricting the development of OLEDs, etc., to improve the luminous efficiency, lifespan and luminous efficiency. and longevity effect

Active Publication Date: 2021-07-16
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, due to the huge gap between the external quantum efficiency and internal quantum efficiency of OLEDs, which greatly restricts the development of OLEDs, how to improve the light extraction efficiency of OLEDs has also become a research hotspot.
Total reflection will occur at the interface between the ITO film and the glass substrate and the interface between the glass substrate and the air, and the light emitted to the front of the OLED device to the external space accounts for about 20% of the total EL of the organic material film, and the remaining about 80% of the light Mainly in the form of guided waves, it is limited to organic material thin films, ITO thin films and glass substrates, which seriously restricts the development and application of OLEDs. How to reduce the total reflection effect in OLED devices and increase the proportion of light coupled to the external space before the device , and then improving the performance of the device has attracted widespread attention

Method used

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  • A kind of compound and its preparation method and application
  • A kind of compound and its preparation method and application
  • A kind of compound and its preparation method and application

Examples

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preparation example Construction

[0064] The present invention also provides a preparation method of the compound of formula (I), comprising: reacting the compound of formula (II) with the compound of formula (III) to obtain the compound of formula (I);

[0065]

[0066] Among them, the Ar 1 、Ar 2 independently selected from hydrogen, C1-C8 alkyl, C6-C25 aryl or C2-C20 heteroaryl;

[0067] The X 1-a 、X 1-b 、X 1-c 、X 1-d 、X 1-e independently selected from nitrogen or carbon;

[0068] The X 2-a 、X 2-b 、X 2-c 、X 2-d 、X 2-e independently selected from nitrogen or carbon;

[0069] The R 1 , R 2 are independently selected from C5-C9 alkyl groups.

[0070] Wherein, the present invention has no special requirements on the reaction conditions, and those skilled in the art can select appropriate reaction conditions to prepare the product according to the common knowledge, and the limitation of the group is the same as that of the aforementioned compounds.

[0071] The present invention also provides a...

Embodiment 1

[0098] Synthesis of compound 001

[0099]

[0100] Under nitrogen, diphenylamine (110mmol), 2-bromo-9,9-diheptylfluorene (100mmol), o-phenanthroline (1.98g), cuprous iodide (1.90g), cesium carbonate (38.6g, 2eq) and other substances were dissolved in toluene (300mL) and heated at 110°C, reacted for 7 hours, cooled, and filtered at room temperature to remove metal substances, and the solvent was evaporated by rotary evaporation to obtain solid 001 (76mmolg, 76%).

[0101] Similarly, according to the above method, select different substrates to obtain new compounds.

Embodiment 2

[0103] As the CPL layer material in the light-emitting device, the organic compound of the present invention has high Tg (glass transition temperature) and high refractive index. The compounds prepared in the examples were tested for thermal performance and refractive index, and the test results are shown in Table 1. Show.

[0104] Table 1

[0105]

[0106]

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Abstract

The invention provides a compound and its preparation method and application. Experimental results show that the compound provided by the invention is used as a CPL layer in an organic electroluminescent device, which can significantly improve the luminous efficiency and life of the organic electroluminescent device; in addition The ink composition obtained by combining the compound described in the present invention with a high polymer is easy to form an exciplex, and when it is used as a light-emitting layer material of an organic electroluminescent device, the coating of the light-emitting layer can be realized by a printing process, and The luminous efficiency and service life of the obtained light emitting device are relatively high.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a compound and its preparation method and application. Background technique [0002] The research on organic electroluminescent devices began in the 1960s, and OLEDs did not flourish until the end of the 1980s. OLED has the advantages of full solid-state, low-voltage drive, active light emission, fast response, wide viewing angle, large light-emitting area, light-emitting wavelength covering the entire visible light region, and rich colors. It has great advantages in the field of full-color large-area display and has become an extremely Flat panel display devices in the foreground. The luminous brightness of an organic electroluminescent device is proportional to the product of the concentration of holes and electrons and the recombination probability of excitons. In order to obtain higher luminous efficiency, not only holes and electrons must be able to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/61C07D333/20C07D213/38C07D241/12C07D213/74C07D409/12C07D403/04C07D241/20C07D401/04C07D409/14C07D401/14C07D401/12C07D239/42C07C209/10C09K11/06C09D11/50C09D11/102H01L51/50H01L51/54
CPCC09D11/102C09D11/50C09K11/06C07C211/61C07D213/38C07D213/74C07D239/42C07D241/12C07D241/20C07D333/20C07D401/04C07D401/12C07D401/14C07D403/04C07D409/12C07D409/14C07C2603/18C09K2211/1059C09K2211/1044C09K2211/1092C09K2211/1011C09K2211/1007C09K2211/1014C09K2211/1029H10K85/655H10K85/636H10K85/633H10K85/615H10K85/654H10K50/00
Inventor 李建行李文军陈明张鹤刘建鹏王辉马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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