| abstract |
The invention discloses a preparation method and application of a blue-light main body thermally activated compound. The invention designs and synthesizes a type of fluorescent molecule, which is a molecule connected by an alkyl chain as a peripheral group, and introduces the famous TADF blue light emitting core . The introduced alkyl chain makes the material easily soluble in common organic solvents such as toluene, chloroform, and chlorobenzene. At the same time, the effects of peripheral guest units on the thermal, optical and electrochemical properties of the autonomous emitter are studied in detail. The results show that the introduced compound can Effectively improving the thermal stability and carrier balance performance of the autonomous material, by using peripheral groups as the emissive layer, the prepared solution-processed undoped TADF OLEDs exhibit high device efficiency (EQE=6.2% and current efficiency of 10.5 cd) A -1 ), and the color purity is stable due to the balance of efficient encapsulation of the emitting core and charge transfer of the bipolar dendrimers. |