Abstract:
Micellar surfactants decrease the yield of products formed in the interaction of ea"q, -H, -OH and
Cl2 with uracil and thymine far in excess of the decrease expected on the basis of simple competition
of these species for the pyrimidines and the surfactants. Additionally, in the presence of micelles
percentages of some of the radiolytic products of thymine, particularly the dimers, decrease at the
expense of the glycols. Effects on uracil are smaller than those on thymine. These results are
explicable in terms of interactions between the product-forming intermediate species with the micelles
and the significance of this behaviour is discussed.