Investigations at the air/water interface using polarization modulation IR spectroscopy

1996 ◽  
Vol 92 (4) ◽  
pp. 525 ◽  
Author(s):  
Daniel Blaudez ◽  
Jean-Marie Turlet ◽  
Jean Dufourcq ◽  
Delphine Bard ◽  
Thierry Buffeteau ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Polarization Modulation ◽  
Water Interface ◽  
Air Water Interface

Polarization-Modulated FT-IR Spectroscopy of a Spread Monolayer at the Air/Water Interface

1993 ◽  
Vol 47 (7) ◽  
pp. 869-874 ◽  
Author(s):  
D. Blaudez ◽  
T. Buffeteau ◽  
J. C. Cornut ◽  
B. Desbat ◽  
N. Escafre ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Liquid Water ◽  
Arachidic Acid ◽  
Water Molecules ◽  
Water Interface ◽  
Vibrational Modes ◽  
Experimental Conditions ◽  
Air Water Interface ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

This study devoted to the FT-IR spectroscopy of monolayers spread at the air/water interface is, to our knowledge, the first report presenting complete mid-infrared monolayer spectra perfectly extracted from the strong water vapor bands. This has been possible with the use of the polarization-modulated IRRAS method, which is not sensitive to the isotropic absorptions of the sample environment. On the basis of theoretical modeling and experiments, the best angle of incidence has been found near 76° for detection of intraplane as well as out-of-plane oriented monolayer absorptions. With the use of such experimental conditions, on the normalized difference (covered vs. uncovered water) PM-IRRAS spectra, monolayer vibrational bands come out upward or downward, depending on the orientation of their transition moment with respect to the interface. Application to the study of deuterated arachidic acid and arachidate monolayers allows observation of the vibrational modes of the polar head groups interacting with the liquid water molecules and provides some evidence of their symmetrical anchoring. The vibrational modes of the liquid water subphase contribute to these difference spectra as broad dips that certainly contain information on a possible restructuring of the water molecules at the interface.

Polarization modulation FTIR spectroscopy at the air-water interface

1994 ◽  
Vol 242 (1-2) ◽  
pp. 146-150 ◽  
Author(s):  
D. Blaudez ◽  
T. Buffeteau ◽  
J.C. Cornut ◽  
B. Desbat ◽  
N. Escafre ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Polarization Modulation ◽  
Water Interface ◽  
Air Water Interface

scholarly journals Ultrafast to Ultraslow Dynamics of a Langmuir Monolayer at the Air/Water Interface Observed with Reflection Enhanced 2D IR Spectroscopy

2017 ◽  
Vol 139 (46) ◽  
pp. 16518-16527 ◽  
Author(s):  
Chang Yan ◽  
Joseph E. Thomaz ◽  
Yong-Lei Wang ◽  
Jun Nishida ◽  
Rongfeng Yuan ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Langmuir Monolayer ◽  
Water Interface ◽  
2D Ir ◽  
Air Water Interface
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