Synthesis and Photolithographic Property of Conjugated Polymers with Polyazomethine Structure

Abstract

Two different polyazomethine-type conjugated polymers, poly(phenoxiazine-3, 3'-dihydroxybensidine)(PZ-DHB) and poly(phenoxiazine-2,4-diamino-6-hydroxypyrimidine)(PZ-DHP) containing phenothiazine moiety and azomethine linkage in the main chain were synthesized by Schiff-base polycondensation reactions. The polymer poly(PZ-DHB) was converted to the photosensitive type, through Mitsunobu reaction by incorporation of a photocrosslinkable group, hydroxyhexyloxystyryl-2-pyridine(2-HHSP) into the polymer side chains. The photosensitive conjugated polymer, poly(PZ-DHB)-PS, exhibited both strong fluorescence emission at 555 nm and good patterning property in the standard photolithographic processes