For polypyridine the Stokes shifted fluorescence spectrum and photoinduced absorption studies suggest that triplet excitons are importance for this system. We have fabricated electroluminescent devices with polypyridine as the emitting layer. The electroluminescence and photoluminescence spectra are similar and are peaked in the blue-green region. The simplicity of synthesis, the ability to cast polypyridine directly from soln., and the ability to quaternize the nitrogen site makes polypyridine of particular interest. [on SciFinder(R)]
