Synthesis and characterization of processable conducting polyazomethines

Abstract

Abstract A series of the wholly aromatic polyazomethines (PAM) having flexible side chains was synthesized by solution and melt polycondensation of 2,5‐dialkoxyterephthalaldehydes and aromatic diamines. The solution polycondensation was carried out at 80°C for 24 h in 1,3‐dimethyl‐3,4,5,6‐tetrahydro‐2(1 H )‐pyrimidinone (DMPU)/ N ‐methyl‐2‐pyrrolidone (NMP) mixtures. The melt polycondensation was conducted in N 2 atmosphere at 200°C for 2,8 h. All of the polymers were soluble in CCl 4 , CHCl 3 , THF, benzene, toluene, etc. The inherent viscosity (η inh ), measured at 30°C in CHCl 3 , was 0,13–0,32 dL/g, and 5% weight loss in TG curves appeared at 365–390°C in N 2 atmosphere. The electrical conductivities of I 2 ‐treated dialkoxy‐substituted PAM were low, 10 −4 < σ < 10 −6 S/cm, compared with unsubstituted I 2 ‐treated PAM.