T. Ohana et al., PREPARATION OF POLYKIS AZOBENZENE BY PHOTOLYSIS OF 1,4-DIAZIDOBENZENEWITH EXCIMER-LASER RADIATION, Journal of photochemistry and photobiology. A, Chemistry, 72(1), 1993, pp. 83-86
The photolysis of 1,4-diazidobenzene (1) with a KrF excimer laser gave
a dark-purple precipitate, which was characterized as polykis azobenz
enes by UV-visible, IR, Raman and nuclear magnetic resonance spectrosc
opies. The intermolecular reaction of 1,4-dinitrenobenzene, which was
generated from the photolysis of matrix-isolated 1 in argon at 20 K, a
lso gave a similar product. High intensity irradiation with excimer la
sers provides a new polymerization method as the result of effective f
ormation of an intermediate having two reactive sites.