Products Cited in Publications Worldwide Tuning Excited-State Reactivity toward Proton Transfer, Electron Transfer, or Proton-Coupled Electron Transfer through Ancillary Ligand Effects for a Series of Ruthenium (II) Complexes

Tuning Excited-State Reactivity toward Proton Transfer, Electron Transfer, or Proton-Coupled Electron Transfer through Ancillary Ligand Effects for a Series of Ruthenium (II) Complexes

Martinez, Kristina Paula

Abstract

Inspired by nature, artificial photosynthesis seeks to take solar energy and convert it into storable fuels. Doing so requires the management of multiple redox and acid-base reactions. In natural photosynthesis, organisms couple proton transfer to electron transfer to reduce the overall driving force needed for reaction; this has made research on systems that exhibit proton-coupled electron transfer reactivity of particular interest to researchers in the area of solar fuels. Not only does coupling proton transfer to electron transfer reduces the free energy of reaction needed for the transfer of a redox process, but it also eliminates the generation of high energy intermediate species in multi-electron transfer events. These multi-electron transfer reactions are necessary to reduce protons to dihydrogen or reduce carbon dioxide to formate or carbon monoxide.

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