Control of the Receptor Binding to a Ligand-Containing Monolayer at the Air/Water Interface by the Lateral Pressure:  A Film Balance and Neutron and Infrared Reflection Study

2001 ◽  
Vol 105 (17) ◽  
pp. 3639-3645 ◽  
Author(s):  
Andreas P. Maierhofer ◽  
Martin Braun ◽  
Otto Vostrowsky ◽  
Andreas Hirsch ◽  
Sean Langridge ◽  
...  
Keyword(s):  
Receptor Binding ◽  
Lateral Pressure ◽  
Water Interface ◽  
Infrared Reflection ◽  
Air Water Interface ◽  
Film Balance

Viscoelastic Properties of Lipopolymers at the Air−Water Interface:  A Combined Interfacial Stress Rheometer and Film Balance Study

Langmuir ◽  
1999 ◽  
Vol 15 (22) ◽  
pp. 7752-7761 ◽  
Author(s):  
C. A. Naumann ◽  
C. F. Brooks ◽  
G. G. Fuller ◽  
W. Knoll ◽  
C. W. Frank
Keyword(s):  
Viscoelastic Properties ◽  
Interfacial Stress ◽  
Water Interface ◽  
Balance Study ◽  
Air Water Interface ◽  
Film Balance

Piezoluminescence at the Air−Water Interface through Dynamic Molecular Recognition Driven by Lateral Pressure Application

Langmuir ◽  
2005 ◽  
Vol 21 (3) ◽  
pp. 976-981 ◽  
Author(s):  
Katsuhiko Ariga ◽  
Takashi Nakanishi ◽  
Yukiko Terasaka ◽  
Hiromitsu Tsuji ◽  
Daisuke Sakai ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Lateral Pressure ◽  
Water Interface ◽  
Pressure Application ◽  
Air Water Interface

Infrared Hide-and-Seek: Vibrational Excitons Conceal Surfactants at the Air/Water Interface

2020 ◽  
Author(s):  
Kimberly A. Carter-Fenk ◽  
Kevin Carter-Fenk ◽  
Michelle E Fiamingo ◽  
Heather Allen ◽  
John M. Herbert
Keyword(s):  
Arachidic Acid ◽  
Ionic Composition ◽  
Molecular Organization ◽  
Water Interface ◽  
Vibrational Coupling ◽  
One Dimensional ◽  
Infrared Reflection ◽  
Air Water Interface ◽  
Interface Science ◽  
Intermolecular Distances

<p>Surface-sensitive vibrational spectroscopy is a common tool for measuring molecular organization and intermolecular interactions at interfaces. Peak intensity ratios are typically used to extract molecular information from one-dimensional spectra but vibrational coupling between surfactant molecules can manifest as signal depletion in one-dimensional spectra. Through a combination of experiment and theory, we demonstrate the emergence of vibrational excitons in infrared reflection-absorption spectra of soluble and insoluble surfactants at the air/water interface. Vibrational coupling yields a signicant decrease in peak intensities corresponding to C-F vibrational modes of perfluorooctanoic acid molecules. Vibrational excitons also form between arachidic acid surfactants within a compressed monolayer, manifesting as signal reduction of C-H stretching modes. The aqueous phase ionic composition impacts surfactant intermolecular distances, thereby modulating vibrational coupling strength between surfactants. Our results serve as a cautionary tale against employing alkyl and fluoroalkyl vibrational peak intensities in analyses that are ubiquitous in interface science.</p>

Infrared Hide-and-Seek: Vibrational Excitons Conceal Surfactants at the Air/Water Interface

2020 ◽  
Author(s):  
Kimberly A. Carter-Fenk ◽  
Kevin Carter-Fenk ◽  
Michelle E Fiamingo ◽  
Heather Allen ◽  
John M. Herbert
Keyword(s):  
Arachidic Acid ◽  
Ionic Composition ◽  
Molecular Organization ◽  
Water Interface ◽  
Vibrational Coupling ◽  
One Dimensional ◽  
Infrared Reflection ◽  
Air Water Interface ◽  
Interface Science ◽  
Intermolecular Distances

<p>Surface-sensitive vibrational spectroscopy is a common tool for measuring molecular organization and intermolecular interactions at interfaces. Peak intensity ratios are typically used to extract molecular information from one-dimensional spectra but vibrational coupling between surfactant molecules can manifest as signal depletion in one-dimensional spectra. Through a combination of experiment and theory, we demonstrate the emergence of vibrational excitons in infrared reflection-absorption spectra of soluble and insoluble surfactants at the air/water interface. Vibrational coupling yields a signicant decrease in peak intensities corresponding to C-F vibrational modes of perfluorooctanoic acid molecules. Vibrational excitons also form between arachidic acid surfactants within a compressed monolayer, manifesting as signal reduction of C-H stretching modes. The aqueous phase ionic composition impacts surfactant intermolecular distances, thereby modulating vibrational coupling strength between surfactants. Our results serve as a cautionary tale against employing alkyl and fluoroalkyl vibrational peak intensities in analyses that are ubiquitous in interface science.</p>

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