Molecular Crystals and Liquid Crystals, Vol.470, 63-70, 2007
Holographic recording of azobenzene-functionalized liquid crystalline linear telomers
Optical storage properties of azobenzene-functionalized liquid crystalline telomer B and telomer D were investigated by holographic measurements. Both of the telomers are linear with different molecular structures. Linearly and circularly polarized Ar+ laser of 488 nm was used to inscribe holographic gratings on the telomer films prepared by spin coating from their solutions in THY Higher diffraction efficiency was obtained from telomer B compared to telomer D under identical experimental conditions. This may be due to lower glass transition temperature and rigidity of structure of telomer B. Diffraction efficiencies of 9% and 4%. were obtained from telomer B and telomer D film, respectively by irradiation of linearly polarized Ar+ laser (200 mW/cm(2)) for 15 minutes. The stored information in telomer films was seemed to be stable for long time under dark at room temperature.