AROMATIC COPOLYAMIDES AND COPOLYESTERS WITH VINYLENARYLENE AND TERTHIOPHENE FRAGMENTS IN THE POLYMER-CHAIN - SYNTHESIS AND PHOTOPHYSICAL PROPERTIES

A series of copoly(m-phenyleneisophthalamides) and y(m-phenyleneisopro pylidenedi-4,4'-dicarboxylates) with fragments of 2,6-distyrylnaphthal ene,9,10,-distyrylanthracene, 5,5 ''-distyryl-2,2':5',2 ''-terthiophen e and 3'-dodecyl-2,2':5',2 ''-terthiophene has been prepared. The abso rption, excitation and fluorescence spectra of these copolymers as wel l as corresponding model compounds were studied and compared. The actu al molar ratios of luminophoric and non-luminophoric moieties in the c opolymer structure were measured by comparison to model compounds. The photophysical properties of the investigated polymers suggest that th ese materials could be good candidates for the fabrication of efficien t blue and green light-emitting diodes.