Usability of polymers modified by changing the carbazole group in the LEDsdevices

In order to find proper materials for making electroluminescent diodes elec trooptics properties of polymers were investigated. Three polymer groups ba sed on carbazole molecule were the subjects of the studies: PVK modified by substituting the acceptor group or donor group in the carbazole ring, poly -omega-(9-carbazolyl)alkyl methacrylates and copolimer omega-(9-carbazolyl) alkyl -methacrylates with 3-(2-metakryletoxy)carbonyl 7 diethylamincoumarin . Absorption and photoluminescent spectra of polymer in solution and films were measured. Electroluminescent diodes were obtained using the polymers m entioned above. Also, hole mobility was measured according to the distance between the carbazole group and the main chain.