Novel organic material and application thereof in devices

An organic material and a new type of technology, applied in the field of organic electroluminescent display, can solve the problems of low electron mobility, serious power consumption, and reduced efficiency

Inactive Publication Date: 2020-04-21
北京燕化集联光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently commonly used electron transport materials such as AlQ3 have low electron mobility, which leads to high operating voltage and serious power consumption of the device; some electron transport materials such as LG201 have a low triplet energy level

Method used

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  • Novel organic material and application thereof in devices
  • Novel organic material and application thereof in devices
  • Novel organic material and application thereof in devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Synthesis of (Compound II-1-1)

[0074] The synthetic route is as follows:

[0075]

[0076] Synthesis of Compound II-1-1

[0077] A 1-liter three-neck flask equipped with a magnetic stirrer. After nitrogen replacement, 40.07 g (0.378 mol) of sodium carbonate, 25.62 g (purity 99%, 0.21 mol) of phenylboronic acid and 100 ml of toluene were added in sequence. After nitrogen replacement again, 0.5 g of Pd132 was added in sequence. After the addition, the temperature was raised to 80°C. Start to drop a solution consisting of 53.6 g of compound P1 (purity 99%, 0.1 mol) and 100 ml of toluene, and control the temperature at 75-90°C. Cool down to room temperature, add 100ml of deionized water for hydrolysis, stir for 10 minutes, filter, and boil the filter cake several times with DMF to obtain 42.93g of a light yellow solid with a purity of 99% and a yield of 81%.

[0078] Product MS (m / e): 530; Elemental analysis (C 32 h 18 o 4 S 2 ): theoretical value C: 72.43%; H

Embodiment 2

[0080] Synthesis of (Compound II-1-6)

[0081] The synthetic route is as follows:

[0082]

[0083] Synthesis of compound II-1-6

[0084] A 1-liter three-neck flask equipped with a magnetic stirrer. After nitrogen replacement, 40.28 g (0.38 mol) of sodium carbonate, 41.58 g (purity 99%, 0.21 mol) of 4-biphenylboronic acid and 100 ml of toluene were added in sequence. After nitrogen replacement again, 0.5 g of Pd132 was added in sequence. After the addition, the temperature was raised to 80°C. Start to drop a solution consisting of 53.6 g of compound P1 (purity 99%, 0.1 mol) and 100 ml of toluene, and control the temperature at 75-90°C. Cool down to room temperature, add 100ml of deionized water for hydrolysis, stir for 10 minutes, filter, and boil the filter cake several times with DMF to obtain 54.56g of a light yellow solid with a purity of 99% and a yield of 80%.

[0085] Product MS (m / e): 682; Elemental analysis (C 44 h 26 o 4 S 2 ): theoretical value C: 77.40%

Embodiment 3

[0087] Synthesis of (Compound II-1-11)

[0088] The synthetic route is as follows:

[0089]

[0090] Synthesis of compound II-1-11

[0091] A 1-liter three-neck flask equipped with a magnetic stirrer. After nitrogen replacement, 40.07 g (0.378 mol) of sodium carbonate, 42.84 g (purity 99%, 0.21 mol) of (4-cyclohexylphenyl) boric acid and 100 ml of toluene were added in sequence. After nitrogen replacement again, 0.5g of Pd132 was added in sequence. After the addition, the temperature was raised to 80°C. Start to drop a solution consisting of 53.6 g of compound P1 (purity 99%, 0.1 mol) and 100 ml of toluene, and control the temperature at 75-90°C. Cool down to room temperature, add 100ml of deionized water for hydrolysis, stir for 10 minutes, filter, and boil the filter cake several times with DMF to obtain 55.52g of a light yellow solid with a purity of 99% and a yield of 80%.

[0092] Product MS (m / e): 694; Elemental Analysis (C 44 h 38 o 4 S 2 ): theoretical valu

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Abstract

The invention relates to a novel organic material. The novel organic material has any structure shown in general formulas I-III. The novel organic material provided by the invention takes peri-xanthenoxanthene as a parent nucleus, and the compound has a relatively wide band gap, a high T1 energy level and a proper highest occupied molecular orbital (HOMO) energy level. The compound has high thermal stability, is not easy to decompose in the sublimation process, has higher glass-transition temperature, and can maintain the phase stability of the formed film. By introducing groups with large steric hindrance, the luminescent material is not easy to crystallize and quench and has good film-forming property. The novel organic material provided by the invention is preferably used as an electrontransport material of an electron transport layer in an organic electroluminescent device.

Description

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Claims

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Application Information

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Owner 北京燕化集联光电技术有限公司
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