A light-emitting compound containing a dibenzo seven-membered heterocyclic structure, its preparation method and organic electroluminescent device
A light-emitting compound and a seven-membered heterocycle technology, applied in the field of organic electroluminescent devices, can solve the problems of high driving voltage, low luminous efficiency, and short life, and achieve reduced driving voltage, high photothermal stability, and delayed phosphorescence life Effect
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Embodiment 1
[0052] This embodiment provides a light-emitting compound containing a dibenzo seven-membered heterocyclic structure, and the preparation method thereof is as follows:
[0053]
[0054] S1, in N 2 Under protection, take raw material A-6 (60.00mmol), IrCl 3 ·3H 2 O (20.00 mmol) was added to a mixed solution of 100.00 mL of ethylene glycol ether and 30.00 mL of water, heated under reflux at 120 °C for 24 h, and then cooled to room temperature. Rinse with water ethanol and petroleum ether, and dry to obtain powdery bridging ligand B-6 (10.26 g, yield: 60.04%);
[0055]
[0056] S2. Under the protection of N2, weigh the bridging ligand B-6 (5.85mmol), add silver trifluoromethanesulfonate (11.70mmol), then add 100.00mL of dichloromethane, 30.00mL of methanol solution to the system, 55 The reaction was heated under reflux for 24 h, then cooled to room temperature, and the filtrate by column chromatography (short column) was concentrated to solid precipitation, and dried to ...
Embodiment 2
[0068] This embodiment provides a light-emitting compound containing a dibenzo seven-membered heterocyclic structure, and the preparation method thereof is as follows:
[0069]
[0070] S1, under nitrogen protection system, weigh raw material A-44 (60.00mmol), IrCl 3 ·3H 2 O (20.00 mmol) was added to a mixed solution of 240.00 mL of ethylene glycol ether and 80.00 mL of water, heated under reflux at 120 °C for 24 h, and then cooled to room temperature. Rinse with water ethanol and petroleum ether, and dry to obtain powdery bridging ligand B-6 (12.60 g, yield: 59.64%);
[0071]
[0072] S2. Under the protection of N2, weigh the bridging ligand B-44 (5.68mmol), add silver trifluoromethanesulfonate (11.36mmol), then add 90.00mL of dichloromethane, 30.00mL of methanol solution to the system, 55 The reaction was heated under reflux for 24 h, then cooled to room temperature, and the filtrate by column chromatography (short column) was concentrated to solid precipitation, and...
Embodiment 3
[0084] This embodiment provides a light-emitting compound containing a dibenzo seven-membered heterocyclic structure, and the preparation method thereof is as follows:
[0085]
[0086] S1, under nitrogen protection system, weigh raw material A-64 (60.00mmol), IrCl 3 ·3H 2 O (20.00 mmol) was added to a mixed solution of 210.00 mL of ethylene glycol ether and 70.00 mL of water, heated under reflux at 120°C for 24 hours, and then cooled to room temperature. Rinse with water ethanol and petroleum ether, and dry to obtain powdery bridging ligand B-6 (11.28 g, yield: 59.58%);
[0087]
[0088] S2. Under the protection of N2, weigh the bridging ligand B-64 (5.81mmol), add silver trifluoromethanesulfonate (11.62mmol), then add 90.00mL of dichloromethane, 40.00mL of methanol solution to the system, 55 The reaction was heated under reflux for 24 h, then cooled to room temperature, and the filtrate of column chromatography (short column) was concentrated to solid precipitation, ...
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Abstract
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