Intramolecular energy-band dispersion in oriented thin films of n-CF3(CF2)(22)CF3 observed by angle-resolved photoemission with synchrotron radiation

Angle-resolved ultraviolet photoelectron spectra were measured for oriented films of perfluorotetracosane, n-CF3(CF2)(22)CF3, as a model compound of p oly(tetrafluoroethylene) using synchrotron radiation. The main spectral fea tures showed continuous changes in both peak positions and intensities with photon energy, incident angle, and photoelectron take-off angle. The intra molecular energy-band dispersion of poly(tetrafluoroethylene) was mapped fr om the photo-energy dependence of the normal emission spectra. (C) 2000 Ame rican Institute of Physics. [S0021-9606(00)70206-6].