A phosphorescent organometallic iridium complex, its preparation method and its application in organic electroluminescent devices
A technology of organometallic and iridium complexes, which is applied in organic light-emitting devices, organic semiconductor device materials, indium organic compounds, etc., and can solve problems such as high cost, affecting product quality and commercial competitiveness, and poor carrier transport capabilities , to achieve the effect of improving color purity, good industrialization prospects, and enhancing stability
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Embodiment 1
[0049] Example 1 Preparation of phosphorescent organometallic iridium complexes
Embodiment 1-1
[0050] The preparation of embodiment 1-1 complex 1
[0051] Step (1): Preparation of intermediate D1
[0052]
[0053] In a 150mL three-necked flask, feed nitrogen gas, add 3.53g (10mmol) iridium trichloride trihydrate, 3.15g (22mmol) 2-phenylpyrrole, 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;
[0054] Step (2): Preparation of Intermediate S1
[0055]
[0056] Add 2.05g (2mmol) of intermediate D1 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 temperature for 18h, the ...
Embodiment 1-2
[0061] The preparation of embodiment 1-2 complex 6
[0062] Step (1): Preparation of Intermediate D2
[0063]
[0064] In a 150mL three-necked flask, under nitrogen protection, add 3.53g (10mmol) iridium trichloride trihydrate, 4.82g (22mmol) 2-(3-biphenyl)pyrrole, 60mL ethylene glycol methyl ether, 20mL distilled water, stir, Heat up to 120°C, reflux reaction for 17h, stop heating after the solution turns yellow and turbid, filter after natural cooling, wash the filter cake successively with 50mL ethanol, 50mL water, 50mL ethanol, drain and dry to obtain yellow powder intermediate D2 ;
[0065] Step (2): Preparation of intermediate S2
[0066]
[0067] Add 2.66g (2mmol) of intermediate D2 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 w...
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