Enhanced Photoinduced Electron Transfer and Stability of Diradicals in Neutral Extended Pyridine <i>N</i>-Oxides

Abstract

Photoinduced intramolecular electron transfer and the formation of diradicals for neutral nonclassical viologens, pyridine N-oxides, were observed for the first time which broadens the understanding of viologen compounds. The diradical stability and yield were further enhanced by linking a central π-conjugated framework into pyridine N-oxides.