Photochemical Conversion of anti-9-Methylcarbazole-3-carbaldehyde Diphenylhydrazone to Its syn-Isomer and an Indazole
Under irradiation, the compound in the title, which is frequently used as a charge transport material in electrophotography, undergoes reversible isomerization into its syn-isomer and cyclization to the corresponding indazole. These reactions will affect the characteristics in the practical electrophotographic process using this compound.