The UV-Vis absorption and photoluminescence(PL) spectra of a novel fluorene molecular derivative of 2,3-bis(9,9dihexyl-9H-fluoren-2-yl)-6,7-difluoroquinoxaline(F2Py) are investigated.The PL peaks of F2Py in solution and film state are at 452 and 448 nm respectively,and the peak of the blend of F2Py and NPB film is at 544 nm,which is significantly red shifted compared with the PL spectra of individual component.For the further research of electroluminescent properties,OLEDs based on F2Py are fabricated by va...