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Organic metal iridium complex, preparation method and application thereof in OLED

An iridium complex and organometallic technology, applied in the field of organometallic iridium complexes, can solve problems such as poor carrier transport capability, impact on product quality and commercial competitiveness, high cost, etc., and achieve improved device life and good industrialization Prospect, the effect of lowering the driving voltage

Active Publication Date: 2019-07-05
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the serious triplet-triplet annihilation and poor carrier transport ability of the currently reported phosphorescent complexes, the complexes often need to be in a very low and narrow doping concentration range to achieve high High-performance electroluminescence, which requires relatively harsh device preparation conditions, resulting in higher costs in industrial production and affecting product quality and commercial competitiveness

Method used

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  • Organic metal iridium complex, preparation method and application thereof in OLED
  • Organic metal iridium complex, preparation method and application thereof in OLED
  • Organic metal iridium complex, preparation method and application thereof in OLED

Examples

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Effect test

Embodiment 1

[0051] The preparation of embodiment 1 organometallic iridium complex

Embodiment 1-1

[0052] The preparation of embodiment 1-1 complex 1

[0053] Step (1): Preparation of intermediate D1

[0054]

[0055] In a 150mL three-necked flask, feed nitrogen gas, add 3.53g (10mmol) iridium trichloride trihydrate, 3.41g (22mmol) 2-phenylpyridine, 60mL ethylene glycol methyl ether and 20mL distilled water, stir, and heat up to 120°C , reflux reaction for 17h, the solution was yellow and turbid, then stopped heating, filtered after natural cooling, the filter cake was washed with 50mL ethanol, 50mL water, 50mL ethanol in turn, drained and dried to obtain yellow powder intermediate D1;

[0056] Step (2): Preparation of Intermediate S1

[0057]

[0058] Add 2.14g (2mmol) of intermediate D1 and 100mL of dichloromethane into a 250mL three-necked flask, stir and dissolve at room temperature, and slowly add 50mL of silver trifluoromethanesulfonate methanol solution (0.084M) dropwise at room temperature in the dark. 0.5h, stirred at room temperature for 18h, the solution ...

Embodiment 1-2

[0063] The preparation of embodiment 1-2 complex 5

[0064] Step (1): Preparation of Intermediate D2

[0065]

[0066] In a 150mL three-necked flask, nitrogen gas was introduced, and 3.53g (10mmol) iridium trichloride trihydrate, 4.03g (22mmol) 3,5-dimethyl-2-phenylpyridine, 60mL ethylene glycol methyl ether and 20mL Distilled water, stirred, heated up to 120°C, refluxed for 17 hours, the solution turned yellow and turbid, then stopped heating, cooled naturally and filtered, the filter cake was washed with 50mL ethanol, 50mL water, 50mL ethanol in turn, drained and dried to obtain yellow Powder intermediate D2;

[0067] Step (2): Preparation of Intermediate S2

[0068]

[0069] Add 2.38g (2mmol) of intermediate D2 and 100mL of dichloromethane into a 250mL three-necked flask, stir and dissolve at room temperature, slowly drop into 50mL of silver trifluoromethanesulfonate methanol solution (0.084M) at room temperature in the dark, and add the time 0.5h, stirred at room ...

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Abstract

The invention discloses an organic metal iridium complex, a preparation method and application thereof in OLED. Application of the complex to making of OLED devices can achieve good device performance. When the organic metal iridium complex is used as a luminescent layer doping material of OLED devices, the driving voltage of the devices can be significantly lowered, and at the same time, the current efficiency, external quantum efficiency and device lifetime of the devices are all greatly improved. The organic metal iridium complex provided by the invention has good application effects in OLED devices, and has good industrialization prospects.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, and in particular relates to an organometallic iridium complex, a preparation method thereof and an application in OLEDs. Background technique [0002] Organic Light Emission Diodes (OLED) device technology can be used not only to manufacture new display products, but also to make new lighting products. It is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. The OLED 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 stacked together according to the application to form an OLED device. As a current device, when a voltage is applied to the electrodes at both ends of the OLED light-emitting device, and the positive and negative charges in the organic layer functional material film...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K50/11H10K2102/00H10K2102/301
Inventor 于凯朝李崇张兆超叶中华张小庆
Owner JIANGSU SUNERA TECH CO LTD
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