Molecular Crystals and Liquid Crystals, Vol.444, 121-128, 2006
Electroluminescent properties of novel fluorene derivatives with aromatic amine moieties
2,7-Bis[(4-diphenylamino)phenylvinylene]-9,9-diethylfluorene(BDPDF, 1) and 2,7-bis[(9-ethyl-3-carbazolylvinylene)-9,9-diethylfluorene(BECDF, 2) have been synthesized and characterized. To evaluate electroluminescent performance, compound 1 and 2 were used as emitting materials and dopant materials, respectively and the basic device structure was ITO/m-MTDATA/a-NPD/1 or 2 or doped DPVBi with 1 or 2/Alq 3 /LiF/Al. The devices using BDPDF(1) and BECDF(2) show EL peak at 470 nm and 486 nm. The device showed a blue light-emission with the CIE chromaticity coordinates of (0.177, 0.268).