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

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

Effect of Chain Microstructure and Subphase pH on the Surface Properties and Aggregation Behavior of Amphiphilic Copolymers Based on Fluoroacrylates

2019 ◽  
Vol 816 ◽  
pp. 312-317
Author(s):  
Alexandra O. Grigoreva ◽  
E.Y. Polozov ◽  
S.D. Zaitsev
Keyword(s):  
Acrylic Acid ◽  
Surface Properties ◽  
Butyl Acrylate ◽  
Langmuir Monolayer ◽  
Aggregation Behavior ◽  
Reactivity Ratios ◽  
Water Interface ◽  
Amphiphilic Copolymers ◽  
Air Water Interface ◽  
Raft Agent

Copolymerization of 2,2,3,3,4,4,5,5-octafluoropentyl acrylate (OFPA) and acrylic acid (AA), OFPA and tert-butyl acrylate (t-BA) in presence ofdibenzylcarbonotrithioate (BTC) and polymeric RAFT-agents was studied, reactivity ratios were calculated. It was shown that type of RAFT-agent can influence on chain microstructure of obtained polymers. Aggregation behavior of obtained amphiphilic copolymers with different microstructures at the air/water interface was characterized by the Langmuir monolayer technique. The effect of the microstructureand subphase pH on the isotherm curves were shown.

Characterization of Surface-Active Biofilm Protein BslA in Self-Assembling Langmuir Monolayer at the Air–Water Interface

Langmuir ◽  
2017 ◽  
Vol 33 (30) ◽  
pp. 7548-7555 ◽  
Author(s):  
Wei Liu ◽  
Shanghao Li ◽  
Zhuguang Wang ◽  
Elsa C. Y. Yan ◽  
Roger M. Leblanc
Keyword(s):  
Langmuir Monolayer ◽  
Water Interface ◽  
Self Assembling ◽  
Air Water Interface ◽  
Surface Active

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.

Sign in / Sign up

Export Citation Format

Share Document