Polysiloxane allyl p-fluor cinnamate (PSAFC) photopolymer films promote uniform alignment of adjacent liquid crystals (LC) upon photopolymerization by linear polarized UV light. Such films show excellent thermal stability with considerable dichroism after undergoing linear polarized W-induced cycloaddition reaction. There is no clear difference between the atomic force microscope (AFM) images of the films before and after the exposure, which shows that there is no clear morphological anisotropy on the exposed film.