Interfaces between liquid, solid and gas can inhibit the movement of charge in electrochemical systems. In batteries, optimum performance and maximum capacity can be maintained when transferring charge across these barriers through the use of redox mediators: molecular species that act as an intermediary in the electrochemical reactions. This presentation will describe the development and electrochemical studies of isostructural Group 13, 14, and 15 spirocyclic redox-active compounds. Spiroconjugation is evident in this series of compounds, however it is modulated by bond lengths and other structural factors leading to highly variable stability and redox activity despite the superficial similarities. The preliminary results are put into the context of a metal-air battery, examining the reactivity with gaseous oxygen.

Effect of spiroconjugation on the stability of spirocyclic group 13, 14, and 15-centered redox mediators

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ACS Fall 2022

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