Competition between reactive sites during the pulse radiolysis of styrene in aqueous solution

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Abstract
The optical absorptions of the transient species formed by the reactions of the primary radiolysis products of water (eaq-, ·H, and ·OH) with styrene were measured. There are large differences between the various literature estimates for these reaction pathways. Most of the eaq- and H and about 50% of the OH react with the unsaturated vinyl side chain to give the α-methylbenzyl and hydroxy-substituted methylbenzyl radical respectively. The remaining OH reacts with the aromatic ring to give hydroxy(vinyl)cyclohexadienyl radicals.

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