Soluble dendron substituted S,S-dioxo-dibenzothiophene based blue-light molecular glass material as well as preparation method and application thereof

The invention discloses a soluble dendron substituted S,S-dioxo-dibenzothiophene based blue-light molecular glass material as well as a preparation method and an application thereof. The S,S-dioxo-dibenzothiophene based molecular blue-light material is characterized in that the S,S-dioxo-dibenzothiophene is taken as the center, and a soluble dendron and a rigid group Ar1 are connected to the two ends of the S,S-dioxo-dibenzothiophen, respectively; for preparation, 3,7-dibromo-S,S-dioxo-dibenzothiophene or 2,8-dibromo-S,S-dioxo-dibenzothiophene is taken as reaction raw materials, the soluble dendron is introduced through a palladium catalytic Suzuki coupling reaction, and then Ar1 is introduced through the palladium catalytic Suzuki coupling reaction, and as a result, the target product is obtained. The material can be formed into a film by a solution method, has advantages in synthesis, purification and device processing, and also has important application prospect in eletroluminescent display and laser.