Collect. Czech. Chem. Commun. 1979, 44, 756-761

Photolysis of quinonediazides in alcohols and in water

Viktor Řehák, Jaroslav Poskočil, Jaroslav Majer and Ivo Dvořáček

Institute of Chemical Technology, 532 10 Pardubice


The photolysis of 9,10-phenanthrenequinonediazide and 1,2-naphthoquinonediazide derivatives was studied; the spectral changes occurring during the photolysis and the quantum yields for various excitation wavelengths were measured, the order of the reaction was determined, and the effect of the exciting radiation intensity on the photolysis rate was investigated. A likely explanation of the different quantum yields in water and in ethanol is presented.