1968 Volume 41 Issue 5 Pages 1090-1096
Choosing two groups of solvent a) methanol, ethanol, isopropanol (glassy at liquid nitrogen temperature) and b) t-butanol, benzene, tetrahydrofuran (crystalline at liquid nitrogen temperature), ESR studies have been made on the irradiated solutions of A] acridine (A)+acridan (AH2) (1:1), B] A alone, and C] AH2 alone at 77°K. 1) 365 mμ irradiation of A] and B] in the solvents of a) group does not cause any photochemical reaction, whereas in the solvents of b) group, the A*+AH2→2AH· reaction occurs. A resultant singlet ESR line has been assigned to AH·. 2) Irradiation of A] and C] with the entire output from a superhigh pressure mercury lamp gives, for solvents of group a), the ESR spectra which can be attributed mainly to alcohol radicals (RCHOH) but gives electronic absorption spectra ascribed only to AH· ; for the solvents of group b) the results were almost the same as in 1).
This article cannot obtain the latest cited-by information.