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Metal organic complexes, preparation thereof, luminescent material and luminescent device

A technology of metal-organic and luminescent materials, applied in luminescent materials, organic chemistry, electric solid devices, etc., can solve the problems of low luminous efficiency, light purity and luminous brightness, reduce phosphorescence quenching, improve luminous efficiency and prolong service life Effect

Inactive Publication Date: 2011-06-15
海宁市盐官工业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of low luminous efficiency, light purity and luminous brightness of light-emitting devices made of light-emitting materials prepared by existing metal-organic complexes, and to provide a light-emitting device that can improve the light-emitting efficiency, light purity and luminous brightness. Metal organic complex with brightness, preparation method thereof, luminescent material prepared from the metal organic complex, and organic electroluminescence device prepared from the luminescent material

Method used

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  • Metal organic complexes, preparation thereof, luminescent material and luminescent device
  • Metal organic complexes, preparation thereof, luminescent material and luminescent device
  • Metal organic complexes, preparation thereof, luminescent material and luminescent device

Examples

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preparation Embodiment 1

[0072] This preparation example illustrates the preparation of metal-organic complexes provided by the invention.

[0073] (1) Preparation of ligand 5-cyano-2-benzothienylpyridine:

[0074] 10 mmol of 5-cyano-2-chloropyridine (purchased from Aldrich), 14 mmol of benzothiophene boronic acid (purchased from Aldrich), 0.1 mmol of tetrakis(triphenylphosphine)palladium[Pd(PPh 3 ) 4 ] (purchased from Aldrich Company), 30 millimolar sodium carbonate, 30 milliliters of toluene and 30 milliliters of water are placed in a 250 milliliter flask, stirred and mixed evenly, the pH value of the reaction system is 8, and heated under reflux in a water bath at 90 ° C for 4 Hour.

[0075] After cooling to room temperature, the organic phase was separated using a separatory funnel, the aqueous phase was extracted once with 20 ml of toluene, and then the organic phases were combined. The organic phase was washed with water until neutral, and the organic solvent toluene was desolvated under redu...

Embodiment 1

[0083] This example illustrates the preparation of the luminescent material and organic electroluminescent device provided by the present invention.

[0084] On an ITO glass substrate with a thickness of 0.5 mm, an etching solution (pure water: HCl: HNO 3 =10:20:1 (volume ratio); etchant equivalent concentration: 6.8-7.5N) to etch the ITO anode and the lattice pattern with a thickness of 200 nanometers. Then use deionized water, chloroform, acetone and methanol to clean ultrasonically (15 minutes each time), dry and store in isopropanol.

[0085] The ITO glass substrate obtained above was then treated with an ozone plasma microwave treatment system for 10 minutes.

[0086] After taking it out, spin-coat PEDOT / PSS aqueous solution at a speed of 3500rpm with a KW-4A desktop homogenizer, and dry it in vacuum at 90°C for 20 minutes to form a hole transport layer with a thickness of 40nm.

[0087] With the Ir(bt-5CN-py) that Preparation Example 1 obtains 3 Dissolve PVK in chloro...

Embodiment 2

[0097] This example illustrates the preparation of the luminescent material and organic electroluminescent device provided by the present invention.

[0098] Prepare an organic electroluminescent device according to the method of Example 1, the difference is that the thickness of the hole transport layer obtained by spin coating is 30 nanometers, and when the light-emitting layer is formed on the hole transport layer, the obtained in Example 1 will be prepared. Ir(bt-5CN-py) 3 Dissolved with PVK in chloroform solution, Ir(bt-5CN-py) 3 The weight ratio with PVK is 5:100, Ir(bt-5CN-py) 3 And the total consumption of PVK makes the solute (Ir(bt-5CN-py) in the above solution 3 The total concentration of PVK) was 1% by weight, and the solution was spin-coated on the hole transport layer to form a film at a speed of 2000 rpm to obtain a light-emitting layer with a thickness of 90 nanometers. And according to the method of Example 1, the organic electroluminescent device A2 was pr...

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Abstract

The invention provides a metal organic complex, wherein the complex is a compound expressed by a general formula (1). In the formula, R0 can be osmium, iridium or platinum; R1 can be cyano group, trifluoromethyl, fluorine atom or hydrogen atom; and R2 can be cyano group, trifluoromethyl or hydrogen atom, wherein when the R0 is the platinum, n is 2; and when the R0 is the iridium or the osmium, n is 3. An organic electroluminescence device manufactured by an organic phosphor material prepared by the metal organic complex has the advantages of higher luminous efficiency, color purity and brightness, and long service life.

Description

technical field [0001] The present invention relates to a complex and its preparation method, luminescent material and light-emitting device, more specifically to a metal-organic complex and its preparation method, luminescent material and organic electroluminescent device. Background technique [0002] An organic electroluminescent device (OLED) is a new type of display device, which generally includes a substrate, an anode layer, a hole transport layer, a light-emitting layer and a cathode layer in sequence. By applying a certain voltage between the electrodes, the device can emit light. [0003] The electroluminescent phenomenon of organic materials was discovered by Pope et al. in 1963, but it was not until Deng Qingyun et al. (C.W.Tang, S.A.VanSlyke, Appl.Phys.Lett.1987, 51, pp913; U.S.Pat. .Nos.4769292 and 488211) made organic materials into high-efficiency, high-brightness double-layer structure devices by vacuum thermal evaporation, which made organic light-emitting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D409/04C07F15/00C09K11/06H01L51/50H01L51/54
Inventor 费春红吴波李云朗罗晓程文东宫清
Owner 海宁市盐官工业投资有限公司
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