Compound, display panel and display device

A compound, independent technology, applied in the fields of compounds containing Group 3/13 elements of the periodic table, organic chemistry, chemical instruments and methods, etc., can solve the problems of efficiency roll-off of phosphorescent materials, disadvantageous mass production, etc., and achieve high The effect of luminous efficiency and efficient exciton recombination

Pending Publication Date: 2021-02-26
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphorescent materials are basically heavy metal complexes such as Ir, Pt, Os, Re, Ru, etc., which are not conducive to large-scale production
And at high current densities, there is a serious efficiency roll-off phenomenon in phosphorescent materials.

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

[0174] Embodiment 1: the preparation of compound 1

[0175]

[0176] Under a nitrogen atmosphere, add about 100mL of anhydrous toluene to a 250mL reaction flask, then add reactant A1 (4mmol), reactant a-1 (4mmol), sodium tert-butoxide (10mmol), catalyst Pd 2 (dba) 3 (0.2mmol) and the ligand S-Phos (0.6mmol), the temperature was raised to 110°C, and the reaction was carried out overnight. After the reaction is complete, cool to room temperature, add dichloromethane / H 2 O was extracted, and the collected organic phase was washed with anhydrous Na 2 SO 4 After drying, the filtrate was collected by suction filtration, the solvent was spun off and purified by column chromatography to obtain intermediate B1 (yield 81%). MALDI-TOF: m / z: Calculated: C31H18BrIO: 611.96, Found: 612.17.

[0177]

[0178] Under a nitrogen atmosphere, add the reaction solvent 1,2-dichlorobenzene to the reaction flask, and then add the reaction intermediate B1 (2mmol), reactant b-1 (2mmol), potas...

Embodiment 2

[0184] Embodiment 2: the preparation of compound 2

[0185]

[0186] The difference between the preparation method of intermediate C2 and the step (2) of Example 1 is that compound b-1 is replaced with an equimolar amount of compound b-2, and other raw materials, reaction steps and reaction conditions are the same as in Example 1, and finally intermediate Body C2 (yield 76%). MALDI-TOF: m / z: Calculated: C55H33BrN2O: 816.18, Found: 816.39.

[0187]

[0188] The difference between the preparation method of this compound 2 and the step (3) of Example 1 is that the intermediate C1 is replaced with an equimolar amount of compound C2, and other raw materials, reaction steps and reaction conditions are the same as in Example 1, and finally compound 2 (yield rate of 67%).

[0189] MALDI-TOF: m / z: Calculated: C64H43BN2O: 866.35, Found: 866.54.

[0190] Compound elemental analysis results: calculated value: C64H43BN2O (%): C 88.68, H 5.00, N 3.23; test value: C 88.69, H 4.99, N...

Embodiment 3

[0191] Embodiment 3: the preparation of compound 3

[0192]

[0193] The difference between the preparation method of this intermediate C3 and the step (2) of Example 1 is that the compound b-1 is replaced with an equimolar amount of compound b-3, and other raw materials, reaction steps and reaction conditions are the same as in Example 1, and finally obtained Intermediate C3 (75% yield). MALDI-TOF: m / z: Calculated: C46H32BrNO: 693.17, Found: 693.38.

[0194]

[0195] The difference between the preparation method of this compound 3 and the step (3) of Example 1 is that the intermediate C1 is replaced with an equimolar amount of compound C3, and other raw materials, reaction steps and reaction conditions are the same as in Example 1, and finally compound 3 (yield rate of 66%).

[0196] MALDI-TOF: m / z: Calculated: C55H42BNO: 743.34, Found: 743.56.

[0197] Compound elemental analysis results: calculated value: C55H42BNO (%): C 88.82, H 5.69, N 1.88; test value: C 88.84,...

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Abstract

The invention discloses a compound, a display panel and a display device. The compound has a structure represented by formula (1), wherein X, Y, R1, R2, R3, R4, R5, R6, R7, m1, m2, m3 and m4 are as defined in the invention, respectively. The compound provided by the invention can be used for the display panel and the display device.

Description

technical field [0001] The invention belongs to the technical field of organic luminescence, and in particular relates to a compound, a display panel and a display device. Background technique [0002] An organic light emitting diode (OLED) is a self-luminous device that utilizes an organic thin film layer to generate electroluminescent light. Specifically, the OLED device is driven by an external electric field, and the anode and the cathode inject holes and electrons respectively; the holes and electrons migrate to the light-emitting layer and combine in the organic light-emitting material to generate excitons; the excitons in the excited state can be Release energy in the form of light to return to a stable ground state, producing visible light. [0003] According to theoretical speculation, in the excitons formed by the recombination of holes and electrons, the ratio of singlet excitons to triplet excitons is 1:3. Therefore, the maximum internal quantum efficiency of t...

Claims

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Application Information

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IPC IPC(8): C07F5/02C09K11/06H01L51/50H01L51/54
CPCC07F5/02C09K11/06C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/104C09K2211/1044C09K2211/1096H10K85/636H10K85/631H10K85/657H10K85/6572H10K50/11
Inventor 冉佺高威张磊代文朋
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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