Cyclometalated transition metal complex and organic electroluminescence device using the same
A transition metal, cyclometallization technology, applied in the direction of electric solid devices, ruthenium organic compounds, osmium organic compounds, etc., can solve the problem of low luminous efficiency, and achieve the effect of high luminous efficiency and high external quantum efficiency
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Embodiment 1
[0206] Embodiment 1: Synthesis of complex 7 and complex 9 represented by formula 7 and formula 9 respectively
[0207]
[0208] Under a nitrogen atmosphere, 635 mg (0.5 mmol) [(Piq) prepared according to Synthesis Example 1 2 IrCl] 2 and 250 mg (1.2 mmol) of the sodium salt of 2,2-bipyridine-3,3-diol prepared by treating 2,2-bipyridine-3,3-diol with NaOH in dichloromethane / methanol solvent were dissolved in a chloroform solution in a 100 ml two-necked flask with a thermometer, a mechanical stirrer, and a reflux condenser, and then reacted at 50° C. for 18 hours. When the reaction was complete, the reaction product was cooled to room temperature, and then the solvent used was removed in vacuo. The residual solid was dissolved in chloroform and then the dissolved portion of the residual solid was filtered. Then, the filtrate was purified and separated using column chromatography. The eluent used was a solution of chloroform and methanol in a ratio of 10:1. The resulting ...
Embodiment 2
[0210] Embodiment 2: Synthesis of complex 8 and complex 10 represented by formula 8 and formula 10 respectively
[0211]
[0212] Under a nitrogen atmosphere, 836 mg (0.5 mmol) ([Ir(DMPPiq) prepared according to Synthesis Example 2 2 Cl] 2 ) and 250 mg (1.2 mmol) of the sodium salt of 2,2-bipyridine-3,3-diol prepared by treating 2,2-bipyridine-3,3-diol with NaOH in dichloromethane / methanol solvent It was dissolved in chloroform in a 100 ml two-necked flask equipped with a thermometer, a mechanical stirrer, and a reflux condenser, and then reacted at 50° C. for 18 hours. When the reaction was complete, the reaction product was cooled to room temperature, and then the solvent used was removed in vacuo. The residual solid was dissolved in chloroform and then the undissolved residual solid portion was filtered. Then, the filtrate was purified and separated using column chromatography. The eluent used was a solution of chloroform and methanol in a ratio of 10:1. The resulti...
Embodiment 3
[0214] Embodiment 3: the synthesis of complex 6 [Ir(Piq) 2 (hbp)] represented by formula 6
[0215]
[0216] Under a nitrogen atmosphere, 635 mg (0.5 mmol) [(Piq) prepared according to Synthesis Example 1 2 IrCl] 2 , 234mg (1.2mmol) 10-hydroxybenzo [h] quinoline and 345mg (2.5mmol) potassium carbonate (K 2 CO 3 ) was dissolved in a 3:1 solution of chloroform and methanol in a 100 ml two-necked flask with a thermometer, a mechanical stirrer and a reflux condenser, and then reacted at 50° C. for 18 hours. When the reaction was complete, the reaction product was cooled to room temperature, and then the solvent used was removed in vacuo. The residual solid was dissolved in chloroform and then the dissolved portion of the residual solid was filtered. Then, the filtrate was purified and separated using column chromatography. The eluent used was a solution of chloroform and methanol in a ratio of 10:1. The final product was red complex 6 and its yield was 66%.
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