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A kind of polyhydroxy yellow phosphorescent iridium complex and preparation method thereof

A phosphorescent iridium complex, polyhydroxy yellow technology, applied in indium organic compounds, chemical instruments and methods, platinum group organic compounds, etc., can solve problems such as complexes that have not been reported yet, reduce the concentration quenching effect, and enhance anti-metamorphosis. The effect of reaction, anti-aging effect

Active Publication Date: 2020-05-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Baicalin (BC, the abbreviation of baicalin) is an important drug, and its metal complexes are widely used in medicine, but the complexes synthesized by iridium and it have not been reported yet.

Method used

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  • A kind of polyhydroxy yellow phosphorescent iridium complex and preparation method thereof
  • A kind of polyhydroxy yellow phosphorescent iridium complex and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: a kind of preparation method of polyhydroxy yellow phosphorescent iridium complex, concrete steps are as follows:

[0025] (1) Synthesis of iridium dichloro bridge: In a round-bottomed three-neck flask, dissolve 2.83g of 2-phenylpyridine and 2.36g of iridium trichloride hydrate into mixed solvent A, wherein 2-phenylpyridine and trichlorohydrin The molar ratio of iridium is 2.6:1, the mixed solvent A is a mixture of 20mL deionized water and 80mL ethylene glycol ether, under the conditions of protective gas nitrogen atmosphere, magnetic stirring (stirring speed 300r / min), and temperature 120°C Reflux for 24 hours, filter to obtain filtrate A and solid A, wash the solid three times with deionized water, ethanol, and acetone in turn, then dissolve in dichloromethane to remove impurities, filter to obtain filtrate B and solid B, and concentrate and dry the filtrate in vacuo The obtained iridium dichloro bridge complex, mass spectrometry (MS / ESI + ) is 1075, an...

Embodiment 2

[0039] Embodiment 2: a kind of preparation method of polyhydroxy yellow phosphorescent iridium complex, concrete steps are as follows:

[0040](1) Synthesis of iridium dichloro bridge: In a three-necked round-bottomed flask, dissolve 1.87g 2-phenylpyridine and 2.12g iridium trichloride hydrate into mixed solvent A, wherein 2-phenylpyridine and trichlorohydrin The molar ratio of iridium chloride is 2:1, the mixed solvent A is a mixture of 30mL deionized water and 70mL ethylene glycol ether, under the conditions of protective gas nitrogen atmosphere, magnetic stirring (stirring speed 350r / min), and temperature 130°C Reflux for 12 hours, filter to obtain filtrate A and solid A, wash the solid with deionized water, ethanol, and acetone 5 times in turn, then dissolve in dichloromethane to remove impurities, filter to obtain filtrate B and solid B, and concentrate and dry the filtrate in vacuo The obtained iridium dichloro bridge complex, mass spectrometry (MS / ESI + ) is 1075, and ...

Embodiment 3

[0044] Embodiment 3: a kind of preparation method of polyhydroxy yellow phosphorescent iridium complex, concrete steps are as follows:

[0045] (1) Synthesis of iridium dichloro bridge: In a three-necked round-bottomed flask, dissolve 2.5g of 2-phenylpyridine and 2.47g of iridium trichloride hydrate into mixed solvent A, wherein 2-phenylpyridine and trichlorohydrin The molar ratio of iridium is 2.3:1, the mixed solvent A is a mixture of 30mL deionized water and 100mL ethylene glycol ether, under the conditions of protective gas nitrogen atmosphere, magnetic stirring (stirring speed 400r / min), and temperature 125°C Reflux for 18 hours, filter to obtain filtrate A and solid A, wash the solid with deionized water, ethanol, and acetone for 4 times, then dissolve in dichloromethane to remove impurities, filter to obtain filtrate B and solid B, and concentrate and dry the filtrate in vacuo The obtained iridium dichloro bridge complex, mass spectrometry (MS / ESI + ) is 1075, and the ...

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Abstract

The invention relates to a yellow polyhydroxy phosphorescence iridium complex and a preparation method thereof, and belongs to the technical field of electrophosphorescence. 2-phenylpyridine serves asa main ligand of the yellow polyhydroxy phosphorescence iridium complex, and baicalin serves as an auxiliary ligand of the yellow polyhydroxy phosphorescence iridium complex. The preparation method includes the steps of adopting 2-phenylpyridine and iridium trichloride as raw materials to synthesize a 2-phenylpyridine iridium dichloro bridge, and adopting the baicalin and the 2-phenylpyridine iridium dichloro bridge as raw materials to prepare the yellow polyhydroxy phosphorescence iridium complex. A great steric-hindrance effect in the yellow polyhydroxy phosphorescence iridium complex can effectively prevent a concentration quenching effect and improve the luminous efficiency.

Description

technical field [0001] The invention relates to a polyhydroxy yellow phosphorescent iridium complex and a preparation method thereof, belonging to the technical field of electrophosphorescence. Background technique [0002] OLED organic electrophosphorescent luminescent materials are known as the next generation of display devices due to their excellent luminescent properties. Compared with the quantum efficiency of 25% of traditional fluorescent materials, the theoretical quantum efficiency of phosphorescent materials is 100%. Organometallic complex luminescent materials not only have the stability of fluorescent materials, but also have higher luminous efficiency than fluorescent materials, and can also obtain luminescence in the entire visible wavelength range by adjusting the structure of ligands, so they are called the most promising luminescence. Material. [0003] At present, most of the iridium-based phosphorescent light-emitting material complexes for OLEDs are C^...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06
CPCC07F15/0033C09K11/06C09K2211/1029C09K2211/1088C09K2211/185
Inventor 冯旭苏绍晶胡劲王玉天段云彪张维均王开军
Owner KUNMING UNIV OF SCI & TECH
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