Structure-property Relationship of Organic Electroluminescent Materials with Dimeric Quinoline Structure

： Three novel linear dimeric luminescent materials ， BtCzPPQ ， DCPPQ and PZPPQ ， were synthesized by linking two quinoline receptors together into an electron acceptor （ A ） using the Suzuki coupling reaction ， and by linking donor groups （ D ） with different electronic donated moiety. All the three materials have good rigidity ， thermal stability （ T g >220 ℃ ）， and high photoluminescence quantum yields （ PLQYs more than 70% ） . The effects of structur⁃ al factors such as the rigidity of molecules ， linear length ， and the donor group on the electroluminescence properties of the materials were analyzed by characterizing the orbital distribution ， thermal stability ， and photophysical proper⁃ ties of the materials.