POLYMER-BOUND CHIROPTICAL MOLECULAR SWITCHES - PHOTOCHEMICAL MODIFICATION OF THE CHIRALITY OF THIN-FILMS

Photobistable chiral polymers were obtained by covalent attachment of inherently dissymmetric tetrahydrophenanthrene-4'-ylidene)-9H-thioxant hene to methacrylate copolymers with appropriate spacers. Upon irradia tion at 300 nm the optical activity of thin films of these polymers co uld be altered.