Blue to orange emitters; palladium(0) monodentate phosphine complexes

Photoluminescence properties of palladium(0) complexes bearing monodentate phosphines are described. [Pd(P(o-tol)3)2] (o-tol = ortho-tolyl) emits relatively strong blue luminescence in the solid state. Whereas, [Pd(PCyPh2)3] (Cy = cyclohexyl) and [Pd(PCy3)2] show orange luminescence with a large Stokes-shift. The crystal structure analysis of [Pd(PCyPh2)3] reveals the trigonal planar geometry around the palladium atom.