Photochemistry of 1,3-dichloro-tetrafluoroacetone. Part 3.—Quenching of the excited states

Abstract

The quenching of the excited singlet and triplet states of 1,3-dichloro-tetrafluoroacetone by various molecules is reported. Correlation of results with decomposition data indicate that for 310 nm excitation, some 25–30 % of the decomposition products arise from the singlet state, the remainder from the triplet state. The various mechanisms by which the excited states are quenched by different molecules are discussed, and rate-constant data compared with that for hexafluoroacetone.