Synthesis and Electron-Transporting Ability of 3,6-Diaryl-4,5-diazafluorenes Modified Using Direct Arylation
摘要:
A modification of 4,5-diazafluorene by using direct arylation was performed in order to synthesize a new type of electron-transporting materials in the study of organic electroluminescent (EL) devices. The title compounds possessed high glass transition temperatures over 100 degrees C. The phosphorescent EL performance was improved by the increasing electron-transporting ability arising from the extension of the pi-electron system.