Hole transport material and preparation method thereof, and electroluminescent device
A hole-transporting material and hole-transporting layer technology, which is used in electric solid devices, electrical components, light-emitting materials, etc., can solve problems such as the mismatch between energy levels and hole mobility, affecting the luminous efficiency of OLED devices, and achieve high-altitude The effect of hole mobility
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[0037] Such as figure 2 Shown, the preparation method of above-mentioned hole transport material comprises:
[0038] S10, mixing the first reactant, the second reactant, the catalyst, and the solvent to obtain a mixed solution, wherein the structural formula of the first reactant is The X group is one of o, s,
[0039] S20, reacting the mixed solution at 120 degrees Celsius for 24 hours to obtain a reaction solution;
[0040] S30, cooling, extracting, separating and purifying the reaction solution to obtain the hole transport material.
[0041] Wherein, the second reactant is an organic compound corresponding to any one of the above R groups, for example, the second reactant can be one of carbazole, diphenylamine, and 9,9'-dimethylacridine .
[0042] The molar ratio of the first reactant and the second reactant added during the reaction is 1:1, so that the reactants can be completely reacted to the greatest extent.
[0043] The catalyst can be palladium acetate, tri-t...
Embodiment 1
[0049] The structural formula of the first reactant in the present embodiment is The second reactant is carbazole, whose structural formula is The process of the target compound 1 synthesized by the first reactant and the second reactant is shown in the following formula:
[0050]
[0051]Specifically, the above-mentioned first reactant (5.44g, 10mmol), carbazole (1.67g, 10mmol), palladium acetate (90mg, 0.4mmol), and tri-tert-butylphosphine tetrafluoroboric acid were added to a 250mL two-necked flask Salt (0.34g, 1.2mmol), then add sodium tert-butoxide NaOt-Bu (1.16g, 12mmol) to the two-necked flask in the glove box, and inject 100mL of toluene that has been dehydrated and deoxygenated in advance under an argon atmosphere , cooled to room temperature after reacting at 120°C for 24 hours, poured the reaction solution into 200mL ice water, extracted three times with dichloromethane, combined the organic phases, spun into silica gel, and column chromatography (the volume r...
Embodiment 2
[0057] The structural formula of the first reactant in the present embodiment is The second reactant is diphenylamine, whose structural formula is The process of the target compound 1 synthesized by the first reactant and the second reactant is shown in the following formula:
[0058]
[0059] Specifically, the first reactant (5.44g, 10mmol), diphenylamine (1.69g, 10mmol), palladium acetate (90mg, 0.4mmol) and tri-tert-butylphosphine tetrafluoroborate ( 0.34g, 1.2mmol), then NaOt-Bu (1.16g, 12mmol) was added into the glove box, and 100mL of toluene that had been dehydrated and deoxygenated was poured into the glove box under an argon atmosphere, and reacted at 120°C for 24 hours, and after cooling to room temperature The reaction solution was poured into 200 mL of ice water, extracted three times with dichloromethane, the organic phases were combined, spun into silica gel, separated and purified by column chromatography (dichloromethane:n-hexane, v:v, 1:5) to obtain 4.0 ...
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