4-(4-biphenyl)-2,3,5,6-tetrafluoropyridine, a new material for applicationin light-emitting diodes

Thin films of the title compound, C17H9F4N, are used as electron-transport layers in organic light-emitting diodes. The molecules crystallize in a lay ered structure, with the aromatic planes of neighbouring molecules approxim ately parallel to each other. The conformation of the molecule is expressed by tilting of the pyridyl and phenyl planes by 46.8(1) and 40.3(1)degrees, respectively, relative to the central benzene ring.