Research Papers in Physics and Astronomy

 

Date of this Version

2008

Comments

Published in THE JOURNAL OF CHEMICAL PHYSICS 129 (2008), 064704. DOI 10.1063/1.2965819 Copyright © 2008 American Institute of Physics. Used by permission.

Abstract

Thin films of amphiphilic vinylidene fluoride oligomers prepared by Langmuir–Blodgett deposition on silicone substrates were investigated by comparing experimental and theoretical mid-infrared (IR) spectra. The experimental spectra were obtained using infrared spectroscopic ellipsometry. Theoretical spectra were calculated using density functional theory. Excellent correspondence of major IR bands in both data sets shows that the molecular backbone is oriented with the long axis normal to the substrate plane. This is in contrast to polyvinylidene fluoride LB films, in which the polymer chains are parallel to the substrate.