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Iridium metal complex and preparation method and application thereof

An iridium metal complex, selected technology, applied in the direction of indium organic compounds, platinum group organic compounds, chemical instruments and methods, etc., can solve the problems of high synthesis price of phosphorescent materials, high synthesis process requirements, easy pollution of the environment, etc., to achieve Effects of improved luminous efficiency, low driving voltage, high luminous efficiency and brightness

Active Publication Date: 2020-04-10
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the relatively high synthesis price of phosphorescent materials, the synthesis process requirements are relatively high, and the environment is easy to pollute during the synthesis process, the purification requirements are relatively high, and the efficiency is low.

Method used

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  • Iridium metal complex and preparation method and application thereof
  • Iridium metal complex and preparation method and application thereof
  • Iridium metal complex and preparation method and application thereof

Examples

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preparation example Construction

[0066] The present invention also provides a kind of preparation method of above-mentioned iridium metal complex, comprises the following steps:

[0067] Under the condition of shielding gas, raw material a and raw material b are reacted in the first solvent, obtain the iridium metal complex with the structure shown in formula (I);

[0068] The raw material a has a structure shown in formula (II-1), the raw material b has a structure shown in formula (III-1); or the raw material a has a structure shown in formula (II-2), the The raw material b has a structure shown in formula (III-1) or has a structure shown in formula (III-2);

[0069]

[0070] Wherein, m is an integer of 0 to 2, n is an integer of 1 to 3, and m+n=3;

[0071] R 1a , R 1b , R 1c , R 1d , R 2a , R 2b , R 2c , R 2d , R 3 , R 4a , R 4b , R 5 , R 6a , R 6b , R 6c , R 6d , R 7a and R 7b independently selected from hydrogen, deuterium, nitro, amino, hydroxyl, halogen, cyano, mercapto, alkyl, al...

Embodiment 1

[0123] Raw material d has the structure shown in formula (V-1), wherein, R 1a , R 1b , R 1c , R 1d , R 2a , R 2b , R 2c , R 2d Both are -H;

[0124] Raw material c has a structure shown in formula (IV-1), wherein, R 1a , R 1b , R 1c , R 1d , R 2a , R 2b , R 2c , R 2d Both are -H;

[0125] Raw material a has a structure shown in formula (II-1), wherein, R 1a , R 1b , R 1c , R 1d , R 2a , R 2b , R 2c , R 2d Both are -H;

[0126] Raw material b has the structure shown in formula (Ⅲ-1), wherein, R 3 , R 4a , R 4b , R 5 , R 6a , R 6b , R 6c , R 6d , R 7a and R 7b Both are -H;

[0127] Step 1. Under the nitrogen protection system, weigh raw material d (64.5mmol, 10.01g), IrCl 3 ·H 2 O (24.8mmol, 8.75g) was put into the reaction system, a mixed solution of 300mL ethylene glycol ether and 100mL pure water was added, refluxed at 120°C for 24h under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, and th...

Embodiment 2

[0136] Raw material d, raw material c, raw material a are all identical with embodiment 1;

[0137] Raw material b has the structure shown in formula (Ⅲ-1), wherein, R 4a , R 6a , R 6c , R 6d , R 7a and R 7b Both are -H; R 6b , R 3 , R 5 and R 4b for -CH 3 ;

[0138] Step 1, step 2 are all identical with embodiment 1;

[0139] Step 3. Weigh raw material a (8.4mmol, 5.98g), add raw material b (25.5mmol, 8.76g), then add 120mL of absolute ethanol to the system, under the protection of nitrogen, reflux at 80°C for 24h, filter with suction, wash with alcohol , dry, use dichloromethane as solvent, use silica gel column chromatography, the filtrate is concentrated to solid precipitation, obtains the final yellow iridium metal complex (2.19g, yield 31%), has the structure shown in formula (L012) .

[0140] HPLC purity: 99.2%.

[0141] Mass Spectrum: Calculated 843.14; Found 844.25.

[0142] Elemental analysis:

[0143] Calculated values: C: 64.11%; H: 4.78%; N: 4.98%;...

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Abstract

The invention relates to the technical field of organic photoluminescence materials, in particular to an iridium metal complex and a preparation method and application thereof. The iridium metal complex has a structure as shown in a formula (I) which is described in the specification. In the formula (I), m is an integer in a range of 0 to 2; n is an integer in a range of 1 to 3; m and n sum to 3;R1a, R1b, R1c, R1d, R2a, R2b, R2c, R2d, R3, R4a, R4b, R5, R6a, R6b, R6c, R6d, R7a and R7b are independently selected from the group consisting of hydrogen, deuterium, a nitryl group, an amino group, ahydroxyl group, halogen, a cyano group, a sulfydryl group, an alkyl group, an alkoxy group, an alkenyl group, an alkyne group, an aryl group and an aromatic heterocyclic radical. Since specific ligand is selected for the iridium metal complex provided by the invention, and after the obtained organic metal compound is used for an organic light-emitting device, the prepared organic light-emitting device can have relatively high light-emitting efficiency and brightness.

Description

technical field [0001] The invention relates to the technical field of organic photoluminescent materials, in particular to an iridium metal complex, its preparation method and application. Background technique [0002] In 1987, Dr. Deng Qingyun reported the electroluminescent diode technology based on organic light-emitting materials, mainly using vacuum evaporation to prepare a double-layer device with a transport layer and a light-emitting layer, and the quantum efficiency was increased to 1%. The working voltage can reach 1000cd / m 2 The brightness has aroused the widespread attention of science enthusiasts around the world, and promoted the pace of organic electroluminescent technology to the practical stage. Electroluminescent devices have an all-solid-state structure, and organic electroluminescent materials are the core and foundation of the device. The development of new materials is the driving force behind the continuous progress of electroluminescent technology....

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185C09K2211/104C09K2211/1007C09K2211/1029H10K85/342
Inventor 王辉刘志远李明李建行段伟伟王猛马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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