SYNTHESIS AND CHARACTERIZATION OF NOVEL POLYESTERS AND POLYURETHANES CONTAINING 9,10-DIETHYNYLANTHRACENE AND PYROMELLITIC DIIMIDE

A Novel monomer 9,10-bis(4-hydroxy-1-butynyl)anthracene (M1) was synth esized and some polyesters and polyurethanes containing a donor 9,10-d iethynylanthracene and acceptor pyromellitic diimide groups were prepa red. The polymers were soluble in common organic solvents and gave tra nsparent films by casting. They showed 5% weight loss at the temperatu re 250-300 degrees C. All polymers showed luminescence and maximum dep ended on polymer composition. Polymers containing the 9,10-diethynylan thracene moiety alone showed luminescence with maximum at 470-480 nm w hile those containing 9,10-diethynylanthracene and pyromellitic diimid e groups showed luminescence with maximum around 600 nm due to the cha rge transfer complex (CTC) formation between them. Some polymers showe d electroluminescence with turn-on voltage of 10.5 V.