In the absorption of various reagents at the double bond of organic compounds it has been noted that in some cases a different product was obtained when the absorption was carried out in the presence of ultra-violet light. This difference has been frequently explained on the basis that the polarity of the reagent being absorbed was changed by the ultra-violet light. The question has been raised as to whether the difference was actually due to the change in polarity in the double bond.
Proceedings of the Iowa Academy of Science
©1928 Iowa Academy of Science, Inc.
Woods, Gladys M. and Poulter, Thomas C.
"A Study of the Absorption of Hydrogen Bromide by Cinnamic Acid in the Presence of Ultra Violet Light,"
Proceedings of the Iowa Academy of Science, 35(1), 217-217.
Available at: https://scholarworks.uni.edu/pias/vol35/iss1/36