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Title: A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy

Abstract

A spectroelectrochemical cell has been designed to combine electrochemistry and ultrafast two-dimensional infrared (2D-IR) spectroscopy, which is a powerful tool to extract structure and dynamics information on the femtosecond to picosecond time scale. Our design is based on a gold mirror with the dual role of performing electrochemistry and reflecting IR light. To provide the high optical surface quality required for laser spectroscopy, the gold surface is made by electron beam evaporation on a glass substrate. Electrochemical cycling facilitates in situ collection of ultrafast dynamics of redox-active molecules by means of 2D-IR. The IR beams are operated in reflection mode so that they travel twice through the sample, i.e., the signal size is doubled. This methodology is optimal for small sample volumes and successfully tested with the ferricyanide/ferrocyanide redox system of which the corresponding electrochemically induced 2D-IR difference spectrum is reported.

Authors:
; ; ;  [1]
  1. Institut für Biophysik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt (Germany)
Publication Date:
OSTI Identifier:
22482722
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 86; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ABSORPTION SPECTROSCOPY; DESIGN; ELECTROCHEMISTRY; ELECTRON BEAMS; FERRICYANIDES; FERROCYANIDES; GOLD; INFRARED SPECTRA; LASER SPECTROSCOPY; MOLECULES

Citation Formats

El Khoury, Youssef, Van Wilderen, Luuk J. G. W., Vogt, Tim, Winter, Ernst, and Bredenbeck, Jens. A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy. United States: N. p., 2015. Web. doi:10.1063/1.4927533.
El Khoury, Youssef, Van Wilderen, Luuk J. G. W., Vogt, Tim, Winter, Ernst, & Bredenbeck, Jens. A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy. United States. https://doi.org/10.1063/1.4927533
El Khoury, Youssef, Van Wilderen, Luuk J. G. W., Vogt, Tim, Winter, Ernst, and Bredenbeck, Jens. 2015. "A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy". United States. https://doi.org/10.1063/1.4927533.
@article{osti_22482722,
title = {A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy},
author = {El Khoury, Youssef and Van Wilderen, Luuk J. G. W. and Vogt, Tim and Winter, Ernst and Bredenbeck, Jens},
abstractNote = {A spectroelectrochemical cell has been designed to combine electrochemistry and ultrafast two-dimensional infrared (2D-IR) spectroscopy, which is a powerful tool to extract structure and dynamics information on the femtosecond to picosecond time scale. Our design is based on a gold mirror with the dual role of performing electrochemistry and reflecting IR light. To provide the high optical surface quality required for laser spectroscopy, the gold surface is made by electron beam evaporation on a glass substrate. Electrochemical cycling facilitates in situ collection of ultrafast dynamics of redox-active molecules by means of 2D-IR. The IR beams are operated in reflection mode so that they travel twice through the sample, i.e., the signal size is doubled. This methodology is optimal for small sample volumes and successfully tested with the ferricyanide/ferrocyanide redox system of which the corresponding electrochemically induced 2D-IR difference spectrum is reported.},
doi = {10.1063/1.4927533},
url = {https://www.osti.gov/biblio/22482722}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 8,
volume = 86,
place = {United States},
year = {Sat Aug 15 00:00:00 EDT 2015},
month = {Sat Aug 15 00:00:00 EDT 2015}
}