Compound, display panel and display device

A technology for display panels and compounds, applied in the fields of compounds, display panels and display devices, can solve the problems of poor luminescence spectrum overlap, unsatisfactory luminescence wavelength, difficult purification and separation, etc., so as to improve fluorescence quantum efficiency and improve exciton utilization rate. , the effect of improving the luminous efficiency

Active Publication Date: 2019-07-26
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of luminescent dye still has some disadvantages: (1) It is difficult to purify and separate, and the preparation cost is high; (2) The emission wavelength is not ideal, and the emission color is yellowish; (3) There is a serious concentration quenching effect, so it can only be used as an object. The luminescent material realizes red light emission; (4) the absorption spectrum does not overlap well with the luminescence spectrum of host materials such as Alq3
The d...

Method used

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  • Compound, display panel and display device
  • Compound, display panel and display device
  • Compound, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Synthesis of Compound M1

[0077] The synthetic route of compound M1 is as follows.

[0078]

[0079] The specific synthesis steps of compound M1 are as follows.

[0080]

[0081] In a 200ml three-necked flask, 8.84g (20mmol) of substrate A (20mmol) and THF (80mL) were added to dissolve, and nitrogen replacement was performed three times. Cool down to -78°C, and when the temperature reaches, control the temperature below -65°C and slowly add n-BuLi 20mL (50mmol) dropwise, and stir for 30min after the dropwise addition is complete. Then 4.35 g (40 mmol) of TMS-Cl was slowly added dropwise, and the temperature was raised to 0° C. for 4 h. After completion, add ice water to quench. DCM (80mL*2) was added for extraction. The collected organic phase was rotary evaporated to obtain a pale yellow oil. Crystallization using Tol / EtOH afforded a pale yellow solid. 6.45 g (15 mmol) of light yellow solid, anhydrous toluene solution (70 mL) and 0.76 mL (8 mmol) of boron ...

Embodiment 2

[0097] Synthesis of compound M2

[0098]

[0099] The specific synthesis steps of compound M2 are as follows.

[0100]

[0101] In a 200ml three-necked flask, 8.84g (20mmol) of substrate A (20mmol) and THF (80mL) were added to dissolve, and nitrogen replacement was performed three times. Cool down to -78°C, and when the temperature reaches, control the temperature below -65°C and slowly add n-BuLi 20mL (50mmol) dropwise, and stir for 30min after the dropwise addition is complete. Then 4.35 g (40 mmol) of TMS-Cl was slowly added dropwise, and the temperature was raised to 0° C. for 4 h. After completion, add ice water to quench. DCM (80mL*2) was added for extraction. The collected organic phase was rotary evaporated to obtain a pale yellow oil. Crystallization using Tol / EtOH afforded a pale yellow solid. 6.45 g (15 mmol) of light yellow solid, anhydrous toluene solution (70 mL) and 0.76 mL (8 mmol) of boron tribromide were successively added into a 200 mL stuffy jar....

Embodiment 3

[0121] Synthesis of Compound M3

[0122]

[0123] The specific synthesis steps of compound M3 are as follows.

[0124]

[0125] In a 200ml three-necked flask, 8.84g (20mmol) of substrate A (20mmol) and THF (80mL) were added to dissolve, and nitrogen replacement was performed three times. Cool down to -78°C, and when the temperature reaches, control the temperature below -65°C and slowly add n-BuLi 20mL (50mmol) dropwise, and stir for 30min after the dropwise addition is complete. Then 4.35 g (40 mmol) of TMS-Cl was slowly added dropwise, and the temperature was raised to 0° C. for 4 h. After completion, add ice water to quench. DCM (80mL*2) was added for extraction. The collected organic phase was rotary evaporated to obtain a pale yellow oil. Crystallization using Tol / EtOH afforded a pale yellow solid. 6.45 g (15 mmol) of light yellow solid, anhydrous toluene solution (70 mL) and 0.76 mL (8 mmol) of boron tribromide were successively added into a 200 mL stuffy jar....

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Abstract

The invention provides a compound, a display panel and a display device. The compound is in a structure shown as a formula (I), wherein R1 and R2 refer to electron-donating groups and independently selected from any one of C1-C20 alkyl groups, C3-C20 cycloalkyl groups, C1-C20 alkoxy groups, a phenyl, a biphenyl, a naphthyl, an anthryl, a phenanthryl, an acenaphthylene group, a pyrenyl, a perylenegrouop, a fluorenyl, a spirobifluorene group, a chrysene group, a benzo-phenanthryl, a benzo-anthryl, a fluoranthene group, a pyrene groupo, a furyl, a benzofuryl, a substituted or unsubstituted dibenzofuran group, a substituted or unsubstituted thienyl, a benzothiophene group, a dibenzothiophene group, a phenoxazine group, a phenazinyl, a phenothiazinyl, a thianthrene group, a carbazolyl, an acridinyl and a diarylamine group, and m is selected from an integer range of 1-4. The compound is a material with AIE characteristics and TADF characteristics, triplet-state excitons are converted into singlet-state excitons through a reverse intersystem conversion process to realize radioluminescence, and the exciton utilization rate of luminescent materials is increased.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent materials, in particular to a compound, a display panel and a display device including the compound. Background technique [0002] Among organic electroluminescent materials, the research, preparation and application of red light materials are relatively backward. There are two main reasons for this. First, the energy level of HOMO (highest occupied orbit) and LUMO (lowest unoccupied orbital) of red light materials ) Energy range between energy levels (E g ) is generally small, which makes it difficult to match the energy levels, and the holes and electrons cannot effectively recombine and emit light in the light-emitting layer; The extinguishing phenomenon is serious, which affects its luminous performance. Therefore, the research and preparation of red light materials has become one of the research hotspots in the field of fluorescent materials. [0003] At present, the mai...

Claims

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Application Information

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IPC IPC(8): C07F5/02C09K11/06H01L51/54G09F9/30
CPCC07F5/027C09K11/06G09F9/30C09K2211/1029C09K2211/1044C09K2211/1096C09K2211/1033C09K2211/1007C09K2211/1037C09K2211/1014H10K85/631H10K85/636H10K85/657H10K85/6572
Inventor 汪奎张正川
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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