Novel Side-Chain Liquid Crystalline Polyester Architecture for Reversible Optical Storage

Biphotonic holographic gratings in azobenzene polyesters: Surface relief phenomena and polarization effects

“…13 Films about 2 m thick were produced by spin coating from a solution of the polymer in chloroform. Before performing the experiments, the films were heated at 80°C ͑well above the glass transition and the mesophase range of the polymer͒ in order to erase any thermal history or previously induced effects.…”

The still unknown azobenzene - Wavelength dependent photoanisotropy in amorphous azobenzene polymers

“…The cross like structure was observed in the case of several amorphous azobenzene polymers such as E1aP, DNO [13,16] and azobenzene dendrimers. However, no anisotropy could be induced in liquid crystalline polymers such as E1a12 or P6a12 [17]. However, in the…”

Azobenzene-Containing Materials for Hologram

“…Wendorff et al showed that holographic gratings could be inscribed in LC polymers composed of AZ moieties and photoinert mesogenic groups Anderle & Wendorff, 1994). Hvilsted et al achieved holographic gratings with diffraction efficiencies of about 40% in AZ-containing LC polyesters (Hvilsted et al, 1995). Recently, formation of holographic gratings in side-chain LC polymers containing AZ moieties by means of photochemical phase transition was intensively studied.…”