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  Photoelectron angular distributions as sensitive probes of surfactant layer structure at the liquid-vapor interface

Dupuy, R., Filser, J., Richter, C., Seidel, R., Trinter, F., Buttersack, T., et al. (2022). Photoelectron angular distributions as sensitive probes of surfactant layer structure at the liquid-vapor interface. Physical Chemistry Chemical Physics, 24(8), 4796-4808. doi:10.1039/d1cp05621b.

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 Creators:
Dupuy, Remi1, Author              
Filser, Jakob2, Author
Richter, Clemens3, Author              
Seidel, Robert4, Author
Trinter, Florian3, 5, Author              
Buttersack, Tillmann3, Author              
Nicolas, Christophe6, Author
Bozek, John6, Author
Hergenhahn, U.3, Author              
Oberhofer, Harald2, 7, Author
Winter, Bernd3, Author              
Reuter, Karsten8, Author              
Bluhm, Hendrik1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany , ou_persistent22              
3Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
4Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany, ou_persistent22              
5Institut für Kernphysik, Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany, ou_persistent22              
6Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin - BP 48, Gif-sur-Yvette Cedex, France , ou_persistent22              
7Chair for Theoretical Physics VII and Bavarian Center for Battery Technology, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany, ou_persistent22              
8Theory, Fritz Haber Institute, Max Planck Society, ou_634547              

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 Abstract: The characterization of liquid–vapor interfaces at the molecular level is an important underpinning for a basic understanding of fundamental heterogeneous processes in many areas, such as atmospheric science. Here we use X-ray photoelectron spectroscopy to study the adsorption of a model surfactant, octanoic acid, at the water–gas interface. In particular, we examine the information contained in photoelectron angular distributions and show that information about the relative depth of molecules and functional groups within molecules can be obtained from these measurements. Focusing on the relative location of carboxylate (COO-) and carboxylic acid (COOH) groups at different solution pH, the former is found to be immersed deeper into the liquid–vapor interface, which is confirmed by classical molecular dynamics simulations. These results help establish photoelectron angular distributions as a sensitive tool for the characterization of molecules at the liquid–vapor interface.

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Language(s): eng - English
 Dates: 2021-12-092022-02-032022-02-032022-02-28
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/d1cp05621b
 Degree: -

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Project name : AQUACHIRAL - Chiral aqueous-phase chemistry
Grant ID : 883759
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: 13 Volume / Issue: 24 (8) Sequence Number: - Start / End Page: 4796 - 4808 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1