Controlled Electron Transfer in Hydrogen-Bonded Systems Ksenija D. Glusac, Bowling Green State University Bowling Green, Ohio The main goal of this research is to use proton-coupled electron transfer to drive the production of peroxyl radicals from a flavin-based alcohol. The further oxidation of peroxyl radicals is expected to produce oxygen and recover the flavonuim salt. The reaction of Et-Fl+ with OH- ions to produce Et-FlOH was studied using UV/VIS absorption spectroscopy. Upon two-electron oxidation of Et-FlOH, we observe a production on Et-Fl+, presumably by a coupled evolution of molecular oxygen.