Hole transport material, manufacturing method thereof, and electroluminescent device thereof

A method for manufacturing a hole transport material, comprising:

• step 1) proportionally adding raw materials including a central core raw material and an electron donor, and mixing the raw materials with a solvent as a reaction solution;
• step 2) adding a catalyst of palladium (II) acetate (Pd(OAc)2) and a tri-tert-butylphosphine tetrafluoroborate into the reaction solution, and adding toluene free of water and oxygen under an atmosphere of argon gas in the reaction solution, heating the raw materials, the solvent, the catalyst, and the toluene in the reaction solution for reaction by 20-24 hours, and cooling the reaction solution to a room temperature;
• step 3) pouring the reaction solution into ice water, extracting extracts of organic phase three times by dichloromethane to combine the extract of organic phase, and spinning the extracts of organic phase combined to form silicone;
• and
• step 4) implementing separation and purification of column chromatography to acquire white powder to acquire a finished product of the hole transport material;
• wherein the hole transport material comprises a central core made of tetramethyldihydrophenazine, a structural formula of the hole transport material is
• and each of the R1 group and the R2 group is selected from structural formulas as follows:
• and the hole transport material is selected from compounds as follows: