S. Mukherjee et Sc. Bera, LOW-TEMPERATURE FLASH-PHOTOLYSIS OF 4-AMINO AZOBENZENE AND 4-DIMETHYLAMINO AZOBENZENE, Journal of photochemistry and photobiology. A, Chemistry, 113(1), 1998, pp. 23-26
Using laser flash photolysis, the photoisomerization and cis-trans equ
ilibrium relaxation of 4-amino azobenzene and 4-dimethylamino azobenze
ne was studied. At low temperature, cis conformers on photoexcitation
produced trans conformers along with a fast-decaying intermediate abso
rbing in 450-490 nm region. These short-lived intermediates were assig
ned as their zwitterions. (C) 1998 Elsevier Science S.A.