Light emitting material, manufacture method thereof and organic light emitting diode using the light emitting material
A method for manufacturing a light emitting material of the constitutional formula is provided. The structure is unitary, and the formula weight is determined, and the better solubility and film formation are provided, and the thin film status is stable; it possesses a very high decomposition temperature and a lower sublimation temperature, and is easy to sublime to be light emitting material of high purity, and can be applied for small molecule organic light emitting diode. In the method for manufacturing the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed to be starting materials, and an intermediate of the light emitting material is obtained with a series of simple reactions, and finally, the light emitting material is obtained with Ullmann reaction or Suzuki reaction, and these steps are simple and the production is high.
1. A method for manufacturing a light emitting material, comprising the following steps:
Step 1, manufacturing an intermediate
Step 2, obtaining a light emitting material with an Ullmann reaction or Suzuki reaction of the intermediate
and an aromatic amine compound, wherein the light emitting material is of the following constitutional formula:
where Ar 1 and Ar 2 are respectively selected from aromatic amine groups shown in formula (1), formula (2), formula (3), formula (4), formula (5), formula (6), and formula (7):
wherein Step 1 comprises:
Step 11, obtaining
with a reaction of p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile,
Step 12, hydrolyzing
in an alkaline condition, and acidizing the same to obtain
Step 13, subjecting
to a dehydration condensation reaction to obtain
and
Step 14, obtaining the intermediate
with a reaction of
and hydrogen peroxide.
2. The method according to claim 1 , wherein Ar 1 and Ar 2 are the same.
3. The method according to claim 2 , wherein the light emitting material is selected from following compound: