This paper reports the synthesis and electroluminescent properties of a series of blue emitting materials with arylamine and diphenylvinylbiphenyl groups for applications to efficient blue organic light-emitting diodes (OLEDs). All devices exhibited blue electroluminescence with electroluminescent properties that were quite sensitive to the structural features of the dopants in the emitting layers. In particular, the device using dopant 4 exhibited sky-blue emission with a maximum luminance, luminance efficiency, power efficiency, external quantum efficiency and CIE coordinates of 39,000cd/m 2 , 12.3cd/A, 7.45lm/W, 7.71% at 20mA/cm 2 and (x=0.17, y=0.31) at 8V, respectively. In addition, a blue OLED using dopant 2 with CIE coordinates (x=0.16, y=0.18) at 8V exhibited a luminous efficiency, power efficiency and external quantum efficiency of 4.39cd/A, 2.46lm/W and 2.97% at 20mA/cm 2 , respectively.