Red Fluorescent 4-(Dicyanomethylene)-2-norbonenyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJNB) for Organic Light-Emitting Diodes (OLEDs)

摘要

The development of the emitting materials for organic light-emitting diodes (OLEDs) have received considerable attention due to their potential application in flat panel displays and solid-state lighting. However, red fluorescent emitting materials remains one of the greatest challenges for the practical application of OLEDs. Although a variety of red fluorescent materials including the pyran containing materials such as 4-(dicyanomethylene)-2-methyl-6-[p-(di-methylamino)styryl]-4H-pyran) (DCM) and 4-(dicyano-methylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB), the arylamino-polyaromatic hydrocarbon derivatives, polyacenes and metal chelates have been widely studied, their EL performances are not pleased with a prerequisite for the practical applications.