We describe here a physical-organic study of the first alkoxy radicals surface mobility from recombination products. A novel method called symmetrical product recombination (SRP) uses an unsymmetrical peroxide that upon sensitized homolysis recombines to a symmetrical product [R'OOR → R'O●↑ + ●OR → ROOR]. This allows for self-sorting of the radical to enhance radical recombination in forming a symmetrical product, which has been applied to distance migration. SPR also provides a new opportunity for mechanistic studies of interfacial radicals, including monitoring competition between radical recombination versus surface hydrogen abstraction. This is an approach that might work for other surface-born radicals on natural and artificial particles.

Alkoxy radical mobility on a surface as assessed by recombination to symmetrical product

ACS Spring Meeting 2021

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