Novel optically active multifunctional methacrylic copolymers bearing in the side chain azoaromatic and carbazole
groups linked to the main chain with a chiral rigid group of one prevailing absolute configuration have been prepared and
characterized in order to observe possible effects on the optical activity of the resulting materials. All the polymeric
derivates have good thermal stability with glass transition temperature around 200°C and high decomposition
temperatures in the range 280-300°C. Spectroscopic, thermal and chiroptical characterizations indicate the occurrence of
dipolar interactions between side chain moieties and the presence of an ordered chiral conformation at least for chain
segments of the macromolecules.
A new optically active photochromic polymethacrylate containing the carbazole moiety, deriving from the chiral
monomer (S)-(4-cyanophenyl)-[3-[9-[2-(2-methacryloyloxypropanoyloxy) ethyl]carbazolyl]]diazene [(S)-MLECA] has
been prepared and fully characterized with the aim to obtain a multifunctional material which can be considered at the
same time as a photonic material for NLO and optical storage, for chiroptical switches, and for photorefractive and
The complete reversibility of the photoinduced linear birefringence, which is related to fatigue resistance properties
seems to be promising for use in optical storage or more generally in the field of photoresponsive systems, and it is not
necessary to add dopants in order to observe photoconduction thanks to the presence of the carbazole moiety, which is
well known for its hole conducting properties.