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Compression of a Stearic Acid Surfactant Layer on Water Investigated by Ambient Pressure X-ray Photoelectron Spectroscopy.
Hoek, Harmen; Gerber, Timm; Richter, Clemens; Dupuy, Rémi; Rapf, Rebecca J; Oertel, Holger; Buttersack, Tillmann; Trotochaud, Lena; Karslioglu, Osman; Goodacre, Dana; Blum, Monika; Gericke, Sabrina M; Buechner, Christin; Rude, Bruce; Mugele, Frieder; Wilson, Kevin R; Bluhm, Hendrik.
Affiliation
  • Hoek H; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Gerber T; Physics of Complex Fluids - MESA+institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
  • Richter C; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Dupuy R; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany.
  • Rapf RJ; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany.
  • Oertel H; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Buttersack T; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany.
  • Trotochaud L; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany.
  • Karslioglu O; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Goodacre D; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Blum M; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Gericke SM; Department of Chemical Sciences, The University of Auckland, Auckland 1142, New Zealand.
  • Buechner C; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Rude B; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Mugele F; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Wilson KR; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Bluhm H; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
J Phys Chem B ; 128(15): 3755-3763, 2024 Apr 18.
Article in En | MEDLINE | ID: mdl-38578662
ABSTRACT
We present a combined Langmuir-Pockels trough and ambient pressure X-ray photoelectron spectroscopy (APXPS) study of the compression of stearic acid surfactant layers on neat water. Changes in the packing density of the molecules are directly determined from C 1s and O 1s APXPS data. The experimental data are fit with a 2D model for the stearic acid coverage. Based on the results of these proof-of-principle experiments, we discuss the remaining challenges that need to be overcome for future investigations of the role of surfactants in heterogeneous chemical reactions at liquid-vapor interfaces in combined Langmuir-Pockels trough and APXPS measurements.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Phys Chem B Year: 2024 Document type: Article
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Phys Chem B Year: 2024 Document type: Article