TY - DATA T1 - Photoelectric Conversion Based on Proton-Coupled Electron Transfer Reactions PY - 2014/06/04 AU - Xiaojiang Xie AU - Eric Bakker UR - https://acs.figshare.com/articles/journal_contribution/Photoelectric_Conversion_Based_on_Proton_Coupled_Electron_Transfer_Reactions/2286817 DO - 10.1021/ja503491k.s001 L4 - https://ndownloader.figshare.com/files/3923320 KW - proton-coupled electron transfer KW - PCET KW - Sp form KW - 200 Hz KW - open-circuit voltage KW - 9 μ KW - J sc KW - light energy KW - ring-opened form KW - photoswitchable compounds KW - 140 mV KW - V oc KW - Proton-Coupled Electron Transfer Reactions KW - Mc form KW - Photoelectric Conversion KW - V oc values KW - input light KW - proton concentration N2 - Making efficient use of solar energy is one of the biggest challenges of our time. In nature, solar energy can be harvested by photosynthesis where proton-coupled electron transfer (PCET) plays a critical role. Here, PCET is utilized for the first time to directly convert light energy to electrical energy. Quinone/hydroquinone PCET redox couples were used to produce a photovoltage along with spiropyrans, photoswitchable compounds that undergo reversible transformation between a ring-closed (Sp) and ring-opened form (Mc). The Mc form is more basic than the Sp form, and the open-circuit voltage (Voc) is related to the proton concentration and that of the Sp/Mc ratio controlled by light. Voc values from 100 to 140 mV were produced. In addition to direct current (Jsc ca. 9 μA cm–2), alternating current in the range of 0.1 to 200 Hz was also produced by manipulating the input light. ER -