Iridium metal complex luminescent material and preparation and application thereof

A technology of iridium metal complex and luminescent material, applied in the field of iridium metal complex luminescent material, can solve the problems of insufficient luminous efficiency and lifespan, and achieve the effects of improved luminous efficiency, high yield and high product purity

Inactive Publication Date: 2020-10-27
奥来德(上海)光电材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminous efficiency and lifespan of organic phosphorescent materials in the prior art are somewhat insufficient.

Method used

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  • Iridium metal complex luminescent material and preparation and application thereof
  • Iridium metal complex luminescent material and preparation and application thereof
  • Iridium metal complex luminescent material and preparation and application thereof

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preparation example Construction

[0060] The invention also discloses a preparation method of an iridium metal complex luminescent material, comprising the following steps:

[0061] (1) Under the protection of an inert gas, add solvent A to the mixture of the compound of the following general formula II and iridium trichloride, set the temperature at 115-125°C, react for 24-30h, cool, filter, and wash and dry the precipitate Dry, obtain following general formula IV compound;

[0062] Wherein, the molar ratio of the compound of general formula II to iridium trichloride is (2.2-2.8): 1;

[0063] (2) Add alkali and solvent B to the compound of general formula IV in sequence, and after inert gas replacement three times, add the following compound of general formula III under the protection of inert gas, set the temperature at 115-125°C, react for 10-30 hours, and cool The precipitate is precipitated, and then the precipitate is chromatographed to obtain the compound of formula I;

[0064] Wherein, the molar rati...

Embodiment 1

[0075] A kind of preparation of iridium metal complex luminescent material (formula I-1), its specific synthetic steps are as follows:

[0076] The synthetic route is:

[0077]

[0078] Step (1): Under nitrogen protection system, weigh ligand II-1 (12.76g, 50mmol), IrC1 3 ·3H 2 O (7.05g, 20mmol) was put into the reaction system, a mixed solution of 300m1 ethylene glycol ether and 100m1 pure water was added, refluxed for 25 hours under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, water, Anhydrous ethanol and petroleum ether were washed and dried in sequence. The mass of bridging ligand IV-1 obtained as a dark red powder was 8.24 g, and the yield was 56%.

[0079] Step (2): Weigh the bridging ligand IV-1 (7.36g, 5mmol) in the step (1), add anhydrous potassium carbonate (6.9g, 50mmol), and then add 100ml ethylene glycol ether to the system, Replace nitrogen three times, add general fo...

Embodiment 2

[0085] A kind of preparation of iridium metal complex luminescent material (formula I-31), its specific synthetic steps are as follows:

[0086] The synthetic route is:

[0087]

[0088] Step (1): Under nitrogen protection system, weigh ligand II-31 (13.57g, 44mmol), IrC1 3 ·3H 2 O (7.05g, 20mmol) was put into the reaction system, a mixed solution of 330m1 ethylene glycol ether and 110m1 pure water was added, refluxed for 30 hours under nitrogen protection, and then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, water, Anhydrous ethanol and petroleum ether were washed and dried in sequence. The weight of bridging ligand IV-31 obtained as dark red powder was 10.78 g, and the yield was 64%.

[0089] Step (2): Weigh the bridging ligand IV-31 (10.11g, 6mmol) in step (1), add anhydrous potassium carbonate (8.28g, 60mmol), and then add 130ml of ethylene glycol ether to the system, The nitrogen was replaced three times, and th...

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Abstract

The invention discloses an iridium metal complex luminescent material and preparation and application thereof, and belongs to the technical field of organic luminescent materials. The structural general formula of the iridium metal complex luminescent material provided by the invention is as shown in a formula I, and the target product as shown in the formula I is obtained by reacting a compound as shown in a formula II with iridium trichloride to obtain a bridging ligand compound as shown in a general formula IV and then reacting the compound as shown in the formula IV with a compound as shown in a general formula III. When the iridium metal complex provided by the invention is applied to the organic light-emitting device, the light-emitting efficiency of the light-emitting device can beimproved, and meanwhile, the service life of the light-emitting device is prolonged.

Description

technical field [0001] The invention relates to the technical field of organic light-emitting materials, and more specifically relates to an iridium metal complex light-emitting material and its preparation and application. Background technique [0002] An organic light-emitting device (OLED) is composed of a cathode, an anode, and an organic layer inserted between the cathode and the anode, that is, the device is composed of a transparent ITO anode, a hole injection layer (ETL), a hole transport layer (HTL), Light emitting layer (EL), hole blocking layer (HBL), electron transport layer (ETL), electron injection layer (EIL) and cathode are formed, and 1~2 organic layers can be omitted as required. The mechanism of OLED is to form a voltage between two electrodes, one side injects electrons from the cathode, and the other side injects holes from the anode, the electrons and holes recombine in the light-emitting layer to form an excited state, and the excitation returns to a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K50/12
Inventor 王辉李小龙姜志远汪康邱镇李建行马晓宇
Owner 奥来德(上海)光电材料科技有限公司
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