An OLED Efficiency Enhancement Strategy to Accelerate the Application of Flexible Optoelectronic Devices in the Biomedical Field

Development of blue luminescent materials is both crucial and challenging for the further advancement of organic light emitting diodes (OLEDs). Herein, a high-efficiency blue fluorescent luminescent material was developed by modifying the 1,3 site of pyrene. Applied to OLED, the maximum current efficiency reached 10.0 cd/A at 456 nm emission, and the maximum external quantum efficiency reached 7.3%. It showed an efficiency not inferior to that of the conventional 1,6-position pyrene derivatives, which proved that 1,3- functionalized pyrene has good development prospect as OLED blue fluorescent material.