Red organic electrophosphorescent material iridium metal complex, preparation method thereof, and organic electroluminescent device

A technology of iridium metal complexes and phosphorescent materials, applied in the field of organic electroluminescence, can solve the problems of backwardness and rarely achieve the color purity of dark red and dark green light, and achieve high luminous efficiency and good energy transmission efficiency , the preparation process is easy to control the effect
CN104140441AInactive Publication Date: 2014-11-12OCEANS KING LIGHTING SCI&TECH CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
OCEANS KING LIGHTING SCI&TECH CO LTD
Publication Date
2014-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a red organic electrophosphorescent material iridium metal complex with the structure represented by formula (1). In the formula (1), R is a hydrogen atom or a C1-C4 straight chain or alkoxy group. The red organic electrophosphorescent material iridium metal complex is prepared through the following steps: carrying out a Grignard reaction on an iridium metal complex to prepare a compound C, carrying out dehydration cyclization on the compound C to obtain a cyclomedtalating ligand, carrying out a polymerization reaction on the cyclomedtalating ligand and chromium trichloride hexahydrate in a 2-ethoxyethanol and water mixed solvent to obtain a chlorendic dimer, and carrying out a complex reaction on the chlorendic dimer and acetylacetone to obtain the red organic electrophosphorescent material iridium metal complex represented by formula (1). The above material has good energy transmission efficiency and appropriate red light emitting wavelength, and can be widely used to make red or white phosphorescent electroluminescent devices in order to reduce the power consumption of the devices, improve the performances of the devices and prolong the life of the devices.
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Description

technical field

[0001] The invention belongs to the field of organic electroluminescence, and in particular relates to a red-light organic electroluminescence material iridium metal complex, a preparation method thereof, and an organic electroluminescence device. Background technique

[0002] An organic electroluminescent device (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields.

[0003] Organic electroluminescent materials can be divided into two types: fluorescent materials and phosphorescent materials. In fluorescent electroluminescent devices, due to the limitation of spin prohibition, the excited singlet state that produces fluorescence only accounts for 25% of the total exc...

Claims

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