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Organic light emitting device with pyridine compounds

An organic light-emitting device, azabenzene technology, applied in the direction of light-emitting materials, organic chemistry, electric solid-state devices, etc.

Inactive Publication Date: 2019-02-12
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, OLED display technology has been applied in smart phones, tablet computers and other fields, and will further expand to large-size applications such as TVs. However, compared with actual product application requirements, the luminous efficiency and service life of OLED devices Still need to further improve

Method used

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  • Organic light emitting device with pyridine compounds
  • Organic light emitting device with pyridine compounds
  • Organic light emitting device with pyridine compounds

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Experimental program
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Effect test

preparation example Construction

[0079] Concrete preparation method is:

[0080] 1) Dissolving raw material I and intermediate A with toluene, the amount of toluene is 30-50mL toluene per gram of raw material I, wherein the molar ratio of raw material I to intermediate A is 1:(1.2~4.5);

[0081] 2) Add Pd to the reaction system in 1) 2 (dba) 3 , triphenylphosphine and potassium tert-butoxide; the Pd 2 (dba) 3 The mol ratio with raw material I is (0.006~0.02): 1, the mol ratio of described triphenylphosphine and raw material I is (0.006~0.02): 1, and the mol ratio of described sodium tert-butoxide and raw material I is ( 2.0~5.0): 1;

[0082] 3) Under the protection of an inert gas, react the above mixed solution at 95-110°C for 10-24 hours, cool naturally to room temperature, and filter the reaction solution. The filtrate is rotary-evaporated under reduced pressure until there is no solvent, and passed through a neutral silica gel column to obtain the target product, the condition of the vacuum rotary ev...

Embodiment 1

[0087] Embodiment 1: the synthesis of compound 1

[0088]

[0089] Weigh 0.01mol of raw material 1 and 0.015mol of intermediate A and dissolve in 150mL of anhydrous toluene, add 0.02mol of sodium tert-butoxide, 0.02mol of triphenylphosphine and 10 -4 mol Pd 2 (dba) 3 , heated to reflux for 12 hours, sampling point plate, the raw material reacted completely; naturally cooled to room temperature (20 ~ 25 ° C), filtered, collected the filtrate and subjected to reduced pressure rotary evaporation (-0.09MPa, 85 ° C), and performed column chromatography to obtain the target The product has an HPLC purity of 99.5% and a yield of 72.4%.

[0090] Elemental analysis structure (molecular formula C 41 h 26 N 2 O): theoretical value C, 87.52; H, 4.66; N, 4.98; found value: C, 87.43; H, 4.71; N, 4.94. ESI-MS(m / z)(M + ): The theoretical value is 562.66, and the measured value is 562.87.

Embodiment 2

[0091] Embodiment 2: the synthesis of compound 23

[0092]

[0093] The synthetic procedure of compound 23 is similar to that of compound 1, except that intermediate A is replaced by intermediate B.

[0094] Elemental analysis structure (molecular formula C 44 h 32 N 2 ): theoretical value C, 89.76; H, 5.48; N, 4.76; test value: C, 89.65; H, 5.44; N, 4.81. ESI-MS(m / z)(M + ): The theoretical value is 588.74, and the measured value is 588.25.

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Abstract

The invention relates to an organic light emitting device with pyridine compounds. The organic light emitting device has the advantages that an electron barrier layer or a light emitting layer of theorganic light emitting device contains compounds represented by a general formula (1), and accordingly the organic light emitting device is high in efficiency, long in service life and low in cost; the electron barrier layer or the light emitting layer of the organic light emitting device comprises compound molecules represented by the general formula (1), accordingly, electrons and holes can be distributed in the light emitting layer in a balance manner, and the hole injection and transport performance can be enhanced under the condition of appropriate HOMO (highest occupied molecular orbital) energy level; the exciton utilization rate can be effectively increased by the compounds represented by the general formula (1), the high-fluorescence radiation efficiency can be effectively improved by the compounds represented by the general formula (1), the efficiency roll-off under the condition of high current density can be reduced, and voltages of the organic light emitting device can bereduced; the exciton utilization rate can be effectively increased when the compounds are used as light emitting functional layer materials for the OLED (organic light emitting device), the high-fluorescence radiation efficiency can be effectively improved, the efficiency roll-off under the condition of the high current density can be reduced, the voltages of the organic light emitting device canbe reduced, the current efficiency of the organic light emitting device can be improved, and the service life of the organic light emitting device can be prolonged.

Description

technical field [0001] The invention relates to an organic light-emitting device containing azabenzene compounds, belonging to the field of photoelectric devices. Background technique [0002] Organic electroluminescent (OLED: Organic Light Emission Diodes) device technology can be used to manufacture new display products and also can be used to make new lighting products, which is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. The OLED light-emitting device is like a sandwich structure, including electrode material film layers and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the application to form an OLED light-emitting device. OLED light-emitting devices are current devices. When a voltage is applied to the electrodes at both ends, and the positive and negative charges in the organic layer func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54C07D401/10C07D403/10C07D487/04C07D487/14C07D491/048C07D491/153C07D495/04C07D495/14C09K11/06
CPCC09K11/06C07D401/10C07D403/10C07D487/04C07D487/14C07D491/048C07D491/153C07D495/04C07D495/14C09K2211/1059C09K2211/1044C09K2211/1088C09K2211/1092C09K2211/1029H10K85/654H10K85/657H10K85/6572
Inventor 缪康健王子宁李崇张兆超
Owner JIANGSU SUNERA TECH CO LTD
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