Synthesis and photophysical properties of novel organo-soluble polyarylates bearing triphenylamine moieties 

[[abstract]]Two series of new blue photoluminescent aromatic polyesters (polyarylates) were synthesized from 4, 4 '-dicarboxytriphenylamine and 4,4 '-dicarboxy-4 ''-methyltriphenylamine with various bisphenols by the diphenyl-chlorophosphate (DPCP) activated direct polycondensation in a medium of pyridine and lithium chloride. These polymers were amorphous and readily soluble in various common organic solvents including DMAc, THF, and chloroform, and could be cast from their chloroform solutions into transparent films due to their excellent solubility. These polyarylates exhibited moderately high T-g values (186-264 degrees C) and thermal stability. In THF solution, these triphenylamine-containing polyarylates showed UV-Vis absorption bands at 359-365 nm and photoluminescence peaks around 427-451 nm in the blue region.[[note]]SC