Thermally activated delayed fluorescent material and application thereof
A technology of heat-activated delayed and fluorescent materials, applied in the direction of luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of expensive phosphorescent materials and limited application space of phosphorescent materials, and achieve excellent film stability and molecular quality , The effect of device efficiency improvement
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Embodiment 1
[0035] Embodiment 1: the preparation of compound C01
[0036]
[0037] Preparation of compound S2: In a 500mL three-necked flask, add compound S1 (19.7g, 0.04mol), tetrahydrofuran (210g), cool to -78°C, add dropwise n-butyllithium n-hexane solution (2.2mol / L, 36.5 mL, 0.08mol), the dropwise addition was completed in 1h, and kept at -78°C for 1.5h, and the solid 2,7-dichlorofluorenone (20.0g, 0.08mol) was added to the reaction flask in batches, and reacted at -78°C for 3h. The reaction bottle was moved into an ice-water bath, the temperature was naturally raised to -5°C, 80 g of dilute hydrochloric acid with a mass concentration of 5% was added dropwise to quench the reaction, stirred for 0.5 h, separated, the organic phase was collected, and the solvent was removed under reduced pressure to obtain the crude product of S2 36.2 g, the obtained crude product is no longer refined, and is directly put into the next step reaction.
[0038] Preparation of Compound S3: In a 500mL ...
Embodiment 2
[0040] Embodiment 2: the preparation of compound C03
[0041]
[0042] Using S4 as raw material, referring to the method described in Example 1, compound C03 was prepared to obtain 1.7 g of the target object, high-resolution mass spectrometry, positive ion mode, molecular formula C 56 h 30 N 6 , theoretical value 786.2532, test value 786.2538, elemental analysis (C 56 h 30 N 6 ), theoretical value C: 85.48, H: 3.84, N: 10.68, measured value C: 85.43, H: 3.92, N: 10.65.
Embodiment 3
[0043] Embodiment 3: the preparation of compound C04
[0044]
[0045] Using S5 as raw material, referring to the method described in Example 1, compound C04 was prepared to obtain 1.9 g of the target object, high-resolution mass spectrum, positive ion mode, molecular formula C 58 h 34 N 6 , theoretical value 814.2845, test value 814.2841, elemental analysis (C 58 h 34 N 6 ), theoretical value C: 85.48, H: 4.21, N: 10.31, measured value C: 85.41, H: 4.24, N: 10.35.
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