Marcus kinetics control singlet and triplet oxygen evolving from superoxide.

ABSTRACT: Oxygen redox chemistry is central to life¹ and many human-made technologies, such as in energy storage^2-4. The large energy gain from oxygen redox reactions is often connected with the occurrence of harmful reactive oxygen species^3,5,6. Key species are superoxide and the highly reactive singlet oxygen^3-7, which may evolve from superoxide. However, the factors determining the formation of singlet oxygen, rather than the relatively unreactive triplet oxygen, are unknown. Here we report that the release of triplet or singlet oxygen is governed by individual Marcus normal and inverted region behaviour. We found that as the driving force for the reaction increases, the initially dominant evolution of triplet oxygen slows down, and singlet oxygen evolu

SUBMITTER: Mondal S 

PROVIDER: S-EPMC12527928 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature