Evaluation of Molecular Orientation in a Polymeric Monolayer at the Air−Water Interface by Polarization-Modulated Infrared Spectroscopy

Langmuir ◽  
1996 ◽  
Vol 12 (20) ◽  
pp. 4754-4759 ◽  
Author(s):  
Lijun Mao ◽  
Anna M. Ritcey ◽  
Bernard Desbat
Keyword(s):  
Infrared Spectroscopy ◽  
Molecular Orientation ◽  
Water Interface ◽  
Air Water Interface

Control of Molecular Orientation ofα-Helix in the Monolayer at Air–Water Interface

2001 ◽  
Vol 74 (3) ◽  
pp. 421-425 ◽  
Author(s):  
Tomokiyo Doi ◽  
Takatoshi Kinoshita ◽  
Yoshiharu Tsujita ◽  
Hiroaki Yoshimizu
Keyword(s):  
Molecular Orientation ◽  
Water Interface ◽  
Air Water Interface

scholarly journals Multilayer formation by a compressed monolayer of poly-∈-benzyloxycarbonyl-l-lysine

1968 ◽  
Vol 110 (4) ◽  
pp. 733-737 ◽  
Author(s):  
B. R. Malcolm
Keyword(s):  
Infrared Spectroscopy ◽  
Electron Diffraction ◽  
Helical Conformation ◽  
Water Interface ◽  
Ordered Arrays ◽  
Molecular Monolayers ◽  
Air Water Interface ◽  
Polarized Infrared Spectroscopy ◽  
Multilayer Formation ◽  
Perfect Plastic

Molecular monolayers of poly-∈-benzyloxycarbonyl-l-lysine were studied at the air/water interface. Deuterium-exchange measurements and the surface area of the monolayer are consistent with a structure consisting of condensed ordered arrays of α-helices. Collapsed films removed from the surface and air-dried were examined by polarized infrared spectroscopy and electron diffraction and found to consist of molecules in the α-helical conformation. There is no indication of a conformational change during compression of the monolayer, and a series of transitions found in the force–area curve are interpreted as the consecutive formation of additional layers of molecules. Some of the factors that influence this almost perfect plastic behaviour are discussed.

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