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FT-Raman and FTIR spectroscopic studies of N-octadecanoyl-L-alanine amphiphiles
1Laboratory of Mesoscopic Materials Science, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China. duxz2000@yahoo.con
Abstract:
FTIR spectroscopy is used to compare the difference in molecular structure between Langmuir-Blodgett (LB) films (transferred at the surface pressure 40 mN/m with the vertical method and 0 mN/m with the horizontal method) and bulk sample of N-Octadecanoyl-L-alanine amphiphiles. The bulk sample possesses a very similar microstructure (intermolecular hydrogen-bonding interaction and triclinic chain packing) to the well-ordered LB films. Much information on molecular structure of the bulk sample is obtained using FT-Raman spectroscopy, and several weak Raman scattering peaks are assigned.
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