Synthesis and functional properties of end-dendronized oligo(9,9-diphenyl)fluorenes

A facile approach for the synthesis of a family of dendrimers OFn-EG with hole-tran sporting ability moieties by copper-catalyzed Buchwald's double-amination as a key reaction has been developed. These novel dendrimers exhibit good energy transfer efficiencies and very high thermal and electrochemical stabilities and have potential applications as hole transfer and emitting layers in the field of organic emitting diodes (OLEDs) or as host materials for electrophosphorescent applications.