Sh. Bossmann et al., LIGHT-INDUCED DECOMPOSITION OF PERINAPHTHENONE (PHENALENONE) IN N,N-DIMETHYLACETAMIDE, 1,4-DIOXANE AND 2-PROPANOL, Journal of information recording, 23(1-2), 1996, pp. 171-173
During the last years phenalenone gained great importance as reference
sensitizer for singlet oxygen production with a quantum yield close t
o unity. However, its photochemical stability under various reaction c
onditions had not been examined so far. In this contribution, we prese
nt first results showing that photochemical decompositon of phenalenon
e occurs in solvents from which hydrogen-abstraction is possible. Furt
hermore, a physical quencher for singlet-oxygen is formed during photo
lysis.