Bipolar blue phosphorescence host material, preparation method and applications thereof
A compound and bipolar technology, applied in the field of organic electroluminescent materials, can solve problems such as lack, achieve good thermal stability, and improve luminous efficiency.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Example 1: The bipolar blue phosphorescent compound of this example is: 9,9'-(2,8-bis(triphenylsilyl)dibenzo[b,d]furan-3,7-bis base) two (9H-carbazole), structural formula is as follows:
[0036]
[0037] The preparation process of this compound is as follows:
[0038]
[0039] Under nitrogen protection, 3,7-dibromo-dibenzo[b,d]furan-2,8-bis(triphenylsilane) (67.4g, 80mmol) was dissolved in 200mL N,N-dimethylformaldehyde Amide (DMF) solution, then added 9H-carbazole (26.7g, 160mmol), potassium carbonate (22.1g, 160mmol), cuprous iodide (1.52g, 8mmol). The mixture was stirred and reacted at 120°C for 6 hours. Stop the reaction and cool to room temperature, filter, and wash the solid with distilled water three times. The crude product is separated by silica gel column chromatography with eluent n-hexane, and then dried under vacuum at 50°C for 24 hours to obtain off-white solid compound 9,9'-(2,8 - bis(triphenylsilyl)dibenzo[b,d]furan-3,7-diyl)bis(9H-carbazole). ...
Embodiment 2
[0041] Example 2: The bipolar blue phosphorescent compound of this example is: 9,9'-(2,8-bis(triphenylsilyl)dibenzo[b,d]furan-3,7-bis base) two (9H-carbazole), structural formula is as follows:
[0042]
[0043] The preparation process of this compound is as follows:
[0044]
[0045]Under nitrogen protection, 3,7-dibromo-dibenzo[b,d]furan-2,8-bis(triphenylsilane) (67.4g, 80mmol) was dissolved in 200mL toluene (Tol) solution, Then 9H-carbazole (29.4g, 176mmol), cesium carbonate (57.2g, 176mmol), copper powder (0.768g, 12mmol) were added. The mixture was stirred and reacted at 110°C for 9 hours. Stop the reaction and cool to room temperature, filter, and wash the solid with distilled water three times. The crude product is separated by silica gel column chromatography with eluent n-hexane, and then dried under vacuum at 50°C for 24 hours to obtain off-white solid compound 9,9'-(2,8 - bis(triphenylsilyl)dibenzo[b,d]furan-3,7-diyl)bis(9H-carbazole). The yield was 80%. ...
Embodiment 3
[0046] Example 3: The bipolar blue phosphorescent compound of this example is: 9,9'-(2,8-bis(triphenylsilyl)dibenzo[b,d]furan-3,7-di base) two (9H-carbazole), structural formula is as follows:
[0047]
[0048] The preparation process of this compound is as follows:
[0049]
[0050] Under nitrogen protection, 3,7-dibromo-dibenzo[b,d]furan-2,8-bis(triphenylsilane) (67.4 g, 80 mmol) was dissolved in 200 mL of acetonitrile (MeCN) solution, Then 9H-carbazole (32.1g, 192mmol), potassium phosphate (39g, 184mmol), cuprous oxide (2.3g, 16mmol) were added. The mixture was stirred and reacted at 90°C for 12 hours. Stop the reaction and cool to room temperature, filter, and wash the solid with distilled water three times. The crude product is separated by silica gel column chromatography with eluent n-hexane, and then dried under vacuum at 50°C for 24 hours to obtain off-white solid compound 9,9'-(2,8 - bis(triphenylsilyl)dibenzo[b,d]furan-3,7-diyl)bis(9H-carbazole). The yield...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More