UNIGE document Scientific Article
previous document  unige:40155  next document
add to browser collection
Title

Photoelectric Conversion Based on Proton-Coupled Electron Transfer Reactions

Authors
Published in Journal of the American Chemical Society. 2014, vol. 136, no. 22, p. 7857-7860
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 (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.
Identifiers
Full text
Article (Published version) (776 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://pubs.acs.org/doi/abs/10.1021/ja503491k
Structures
Citation
(ISO format)
XIE, Xiaojiang, BAKKER, Eric. Photoelectric Conversion Based on Proton-Coupled Electron Transfer Reactions. In: Journal of the American Chemical Society, 2014, vol. 136, n° 22, p. 7857-7860. https://archive-ouverte.unige.ch/unige:40155

237 hits

0 download

Update

Deposited on : 2014-09-10

Export document
Format :
Citation style :