pH Switching of Radical Reactivity and Orbital Conversion

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Radicals are reactive species that have an unpaired electron, which is usually located in the highest occupied orbital. This proposal uses a combination of theory and experiment to design a new class of radical anions whose unpaired electron is not the highest occupied orbital, and whose electronic configuration reverts to the normal aufbau configuration upon protonation. These special radical anions will display unprecedented radical stability that is pH switchable, as well as ferromagnetism and conductivity upon oxidation. This project will exploit these unusual properties in the design of pH-switchable protecting groups for radicals for synthesis and polymerisation, and determine their role in oxidative stress and enzyme kinetics.