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Phenyl-imidazopyridine type trivalent-iridium organometallic complex and organic electro-phosphorescent luminescent device thereof

An azolopyridine and organometallic technology, which is applied in the field of organic phosphor photoluminescent devices, can solve the problems of insufficient photoelectric properties such as color coordinates, brightness, and efficiency, and achieve excellent color coordinates, advanced and flexible technology, and simple and flexible manufacturing process Effect

Inactive Publication Date: 2009-11-25
XIAN RUILIAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0006] In order to solve the shortcomings of the existing iridium ligands in terms of color coordinates, brightness, efficiency and other photoelectric properties, the present invention provides a phenylimidazopyridine trivalent iridium organometallic complex and a trivalent iridium complex based on this trivalent iridium complex. Organic Electrophosphorescent Doped Light-Emitting Devices

Method used

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  • Phenyl-imidazopyridine type trivalent-iridium organometallic complex and organic electro-phosphorescent luminescent device thereof
  • Phenyl-imidazopyridine type trivalent-iridium organometallic complex and organic electro-phosphorescent luminescent device thereof
  • Phenyl-imidazopyridine type trivalent-iridium organometallic complex and organic electro-phosphorescent luminescent device thereof

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example 1

[0039] Example 1: Synthesis of Ligand BrPIPy:

[0040] In a 250ml three-necked flask equipped with stirring, a thermometer, a gas introduction device, and a reflux condenser, nitrogen gas was introduced for 15 minutes, and 2,4'-dibromoacetophenone 32.6g (0.117mol), 2-aminopyridine 10.4 g (0.111mol), NaHCO 3 l3 (0.155mol) g, 62 g of absolute ethanol, after stirring for 30 min, heat up and reflux for 2 to 3 h. After cooling down to room temperature, the reaction solution was poured into 10 times the volume of water to precipitate a solid, filtered, and washed with water until neutral. The filter cake was boiled and washed with ethanol for 1 h, cooled to room temperature, filtered, and dried to obtain a light brown crude product of 2-(4'-bromo)phenylimidazopyridine (BrPIPy). The crude product was recrystallized from 27 times ethanol to obtain 22.3 g of white crystalline product BrPIPy, HPLC≥99%.

example 2

[0041] Example 2: Synthesis of Ligand PIPy:

example 1

[0042] Referring to the synthesis and purification method of Example 1, 21.1 g (0.106 mol) of 2-bromoacetophenone was reacted with 9.4 g (0.1 mol) of 2-aminopyridine to obtain 15.9 g of the white product 2-phenylimidazopyridine (PIPy). HPLC≥99%.

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Abstract

The invention discloses a phenyl-imidazopyridine type trivalent-iridium organometallic complex and an organic electro-phosphorescent doped luminescent device based on the trivalent-iridium complex. The organic electro-phosphorescent material electroluminescent device has a layered doped structure, wherein a luminescent layer selects CBP as a matrix material and a series of Ir (III) complexes as dopant. The invention adopts a vacuum deposition process to prepare an electro-phosphorescent device with high performance, manufactures a PhOLED device with high efficiency and high brightness through the concentration of the Ir (III) complexes in a matrix, obtains green emission of which the electroluminescent spectrum peak value is between 511 and 540 nm through the structure modification of the Ir (III) complexes, improves the efficiency and brightness of the device, is flexible in manufacture process, and provides a good material for full-color display and illuminating application. And the material of the invention can be applied in single / full-color display and illuminating white-light devices.

Description

technical field [0001] The invention belongs to the technical field of organic phosphorescent electroluminescent (PhOEL) devices, in particular to a phenylimidazopyridine trivalent iridium organometallic complex and an organic electrophosphorescent doped luminescence based on the trivalent iridium complex device. Background technique [0002] In organic electroluminescence, the organic molecules excited by the recombination of electrons and holes are not limited by the spin selection law, and the ratio of excited singlet state and excited triplet state is 1:3 calculated according to the statistical distribution. Fluorescence electroluminescence only utilizes about 25% of the input energy of the excited singlet state, and the rest energy of the excited triplet state is not utilized. In heavy metal complexes, due to the introduction of heavy metal atoms, the coupling of spin and orbit is improved, the lifetime of phosphorescence is shortened, the original triplet state has so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00H01L51/50H01L51/54C09K11/06
Inventor 张玉祥席敏薛震孙军张宏科杨拥军贾凯凯任光福李红燕
Owner XIAN RUILIAN NEW MATERIAL CO LTD
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