Two phenylanthracene-substituted fluorene derivatives, 10-(9,9′-dimethyl-2-(10-phenylanthracen-9-yl)-9H-fluoren-7-yl)-phenylanthracene (1) and 2′,7′-di-(10-phenylanthracen-9-yl)-9,9′-spirobi[9H-fluorene] (2) have been designed, synthesized, and characterized. A device using compound 1 as an emitting material exhibited luminous efficiency, power efficiency, external quantum efficiency and CIE coordinates of 3.37cd/A, 1.50lm/W, 1.87% at 20mA/cm2 and (0.18, 0.25) at 7V, respectively. Furthermore, by exploiting this efficient blue fluorescent material as a blue emitting material with the combination of red phosphorescent bis(2-phenylquinoline)acetylacetonate [(pq)2Ir(acac)], an efficient white OLED (WOLED) with a external quantum efficiency of 1.70%, luminous efficiency of 1.38cd/A, power efficiency of 0.94lm/W at 20mA/cm2 and the color coordinates of (0.33, 0.36) at 14V is demonstrated. 
Blue electroluminescent materials based on phenylanthracene-substituted fluorene derivatives for organic light-emitting diodes