REFLECTION-ABSORPTION FOURIER-TRANSFORM INFRARED-SPECTROSCOPY (RAIRS)STUDY OF THE CONFORMATION AND ORIENTATION OF POLY(AMINO ACID) LANGMUIR-BLODGETT-FILMS
N. Auducboyer et al., REFLECTION-ABSORPTION FOURIER-TRANSFORM INFRARED-SPECTROSCOPY (RAIRS)STUDY OF THE CONFORMATION AND ORIENTATION OF POLY(AMINO ACID) LANGMUIR-BLODGETT-FILMS, Surface and interface analysis, 23(10), 1995, pp. 673-679
A quantitative study by reflection-absorption infrared spectroscopy (R
AIRS) on multilayer systems of Langmuir-Blodgett (LB) poly(amino acid)
films has been carried out. Thickness measurements of monolayer and m
ultilayer systems have been made and the results obtained by two well-
known equations have been compared. Evolution of the alpha-helix confo
rmation as a function of temperature in the case of polybenzyl asparta
te (PEA) and polybenzyl glutamate LB systems has also been studied by
RAIRS. Finally, a Fourier transform infrared transmission study on PEA
LB multilayers as a function of temperature has allowed us to draw so
me conclusions on the orientation of the C=O bonds (amide I) with resp
ect to the dipping direction.