J. Pacansky, A.D. McLean, et al.
Journal of Physical Chemistry
UV irradiation of thin films of p-diethylaminobenzaldehyde diphenyl-hydrazone (1) produces 1-phenyl-3-(4-diethylamino-1-phenyl)-1,3-indazole (2) as the major photoproduct. A proposed mechanism for the reaction, which involves a photocyclization followed by an oxidation, is similar to the photocyclization of diphenylamine to carbazole and stilbene to phenanthrene. In order to gain more insight into the solid state photoreaction, and X-ray crystal structure analysis was performed on 1 to determine the geometry of the diphenylamine group relative to the hydrazone moiety. An X-ray structural analysis was also attempted for 2. In this case, however, owing to problems associated with crystal growth, we could establish the structure only qualitatively. © 1987.
J. Pacansky, A.D. McLean, et al.
Journal of Physical Chemistry
J. Pacansky
Proceedings of SPIE 1989
J. Pacansky, M. Dupuis
The Journal of Chemical Physics
J. Pacansky, R.J. Waltman, et al.
International Journal of Radiation Applications and Instrumentation. Part