Dip-and-pull ambient pressure photoelectron spectroscopy as a spectroelectrochemistry tool for probing molecular redox processes

Author:

Temperton Robert H.12ORCID,Kawde Anurag23ORCID,Eriksson Axl3ORCID,Wang Weijia1ORCID,Kokkonen Esko1ORCID,Jones Rosemary4ORCID,Gericke Sabrina Maria5ORCID,Zhu Suyun1ORCID,Quevedo Wilson6ORCID,Seidel Robert67ORCID,Schnadt Joachim124ORCID,Shavorskiy Andrey1ORCID,Persson Petter28ORCID,Uhlig Jens23ORCID

Affiliation:

1. MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden

2. Lund Institute of Advanced Neutron and X-ray Science, IDEON Building: Delta 5, Scheelevägen 19, 223 70 Lund, Sweden

3. Division of Chemical Physics, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden

4. Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box 118, 22 100 Lund, Sweden

5. Division of Combustion Physics, Faculty of Engineering, Lund University, Box 118, 22 100 Lund, Sweden

6. Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany

7. Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, D-12489 Berlin, Germany

8. Division of Theoretical Chemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden

Abstract

Ambient pressure x-ray photoelectron spectroscopy (APXPS) can provide a compelling platform for studying an analyte’s oxidation and reduction reactions in solutions. This paper presents proof-of-principle operando measurements of a model organometallic complex, iron hexacyanide, in an aqueous solution using the dip-and-pull technique. The data demonstrates that the electrochemically active liquid meniscuses on the working electrodes can undergo controlled redox reactions which were observed using APXPS. A detailed discussion of several critical experimental considerations is included as guidance for anyone undertaking comparable experiments.

Funder

Vetenskapsrådet

VINNOVA

Knut Och Alice Wallenbergs Stiftelse

Deutsche Forschungsgemeinschaft

Crafoordska Stiftelsen

Stiftelsen för Strategisk Forskning

Publisher

AIP Publishing

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy

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