polymethacrylate

The new copolymers methyl methacrylate and methacrylic azomonomers contained the tiazole ring in azofragments were synthesized. The combination of the transmission null ellipsometry and total absorption method is applied to study 3D orientational configurations of azochromophores in these polymethacrylates. Under irradiation, if reorientation mechanism of the photoinduced ordering prevails, the azochromophores reorient perpendicularly to the polarization direction of the exciting light, Eex.

The initial and the photoinduced 3D orientational order in the films of two methacrylic polymers containing azobenzene groups with electron-donor or electron-acceptor substituents was studied by using null ellipsometry and UV/Vis absorption spectroscopy. The 3D order was induced by monochromatic polarized light of two different wavelengths corresponding to * and n* absorption bands of azochromophores.