Compound taking condensed quinazoline as receptor and application thereof
A technology of condensing quinazoline and quinazoline, which is applied in the field of organic electroluminescence functional materials, can solve problems such as insufficient performance, achieve life improvement, balanced carrier transport performance, and high triplet energy level Effect
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[0041] Below, we provide specific synthetic methods for preparing the above compounds and several corresponding intermediates. The synthetic steps are as follows:
[0042] Synthesis of Intermediate Sub-1
[0043]
[0044] Sub-1-2
[0045] Add 200g Sub-1-1, 104.0g 3-nitrophenol, 168.0g potassium tert-butoxide, 3L N,N-dimethylformamide into the three-necked flask, heat the reaction solution to 120°C for 6 hours, and wait until the raw materials are completely After the reaction, the reaction solvent was removed under reduced pressure, and the resulting solid was completely dissolved in toluene, washed with water until neutral, dried over anhydrous sodium sulfate, and purified by silica gel column to obtain 222.0 g of compound Sub-1-2, with a yield of 92.6%.
[0046] Sub-1-3
[0047] Add 220g Sub-1-2 and 2L trifluoromethanesulfonic acid into the three-necked flask, heat the reaction solution to 60°C for 8 hours, and cool down to room temperature after the raw materials are c...
Embodiment 1
[0118] Transparent substrate layer 1 / ITO anode layer 2 / hole transport layer 3 (compound C, thickness 40nm) / luminescent layer 4 (host material compound 4 and dopant material compound B are mixed in a mass ratio of 99:1, thickness is 30 nm) / electron transport layer 5 (compound D, thickness 40 nm) / electron injection layer 6 (LiF, thickness 1 nm) / cathode reflective electrode layer Al.
[0119] The structure of some materials used in the device is as follows:
[0120]
[0121] The specific preparation steps of the above-mentioned organic electroluminescent device are as follows:
[0122] The transparent substrate layer is a transparent substrate, such as transparent PI film, glass and the like.
[0123] The ITO anode layer is washed, followed by alkali washing, ultrapure water washing, drying, and then ultraviolet-ozone washing to remove organic residues on the transparent ITO surface.
[0124] On the above-mentioned ITO anode layer, compound C was evaporated to a film thickne...
Embodiment 2
[0131] Same as Example 1, the difference: transparent substrate layer 1 / ITO anode layer 2 / hole transport layer 3 (compound C, thickness is 40nm) / light-emitting layer 4 (host material compound 4 and doping material compound B according to 98 : 2 mass ratio mixing, thickness is 30nm) / electron transport layer 5 (compound D, thickness is 40nm) / electron injection layer 6 (LiF, thickness 1nm) / cathode reflective electrode layer Al.
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