Synthesis, characterization and electrical conductivity of new poly (azomethine ester)s from hydroxy acids

Abstract Two new poly (azomethine ester)s were synthesized by direct polycondensation of 4′-hydroxybenzalaniline-4-carboxylic acid (1) and 4′-hydroxy-3′-methoxybenzalaniline-4-carboxylic acid (2) using dichlorophenylphosphine at 140 °C in DMF solvent containing LiCl. Polymers were precipitated by pouring the reaction mixture into water. Monomers and polymers were characterized by viscosity, IR, 1 H NMR and TGA. One of the poly (azomethine ester) derived from 4′-hydroxybenzalaniline-4-carboxylic acid (1) when blended with polyaniline/HCl, polyaniline/NH 4 OH and polyaniline shows conductance in the range 5.6 × 10 −11 to 0.78 × 10 −3  S cm −1 .