An orange-light-emitting zinc complex (Znsq(2)) having 2-styryl-8-quin
olinolato ligands was synthesized and used as an emitter material in o
rganic electroluminescent (EL) devices. The device structure of glass
substrate /indium-tin oxide/tetraphenyldiamine derivative /Znsq(2)/ Mg
:Ag was employed. The EL device exhibited orange light originating fro
m Znsq(2) with a maximum luminance of 2000 cd/m(2) at 11 volt.