Journal article
Photoelectric conversion based on proton-coupled electron transfer reactions
Journal of the American Chemical Society, Vol.136(22), pp.7857-7860
2014
Abstract
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 (V oc) 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. © 2014 American Chemical Society.
Details
- Title
- Photoelectric conversion based on proton-coupled electron transfer reactions
- Authors
- Xiaojiang Xie (Author) - University of Geneva, SwitzerlandEric Bakker (Author) - University of Geneva, Switzerland
- Publication details
- Journal of the American Chemical Society, Vol.136(22), pp.7857-7860
- Publisher
- American Chemical Society
- Date published
- 2014
- DOI
- 10.1021/ja503491k
- ISSN
- 0002-7863
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99448998002621
- Output Type
- Journal article
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- Web Of Science research areas
- Chemistry, Multidisciplinary