Synthesis and Computational Oxidation Mechanism Study of Novel Organosoluble Aramids with High Modulus by Low-Temperature Solution Polycondensation

[[abstract]]A series of highly organosoluble polyamides with high modulus having propeller shaped triarylamine were synthesized using aromatic diacid chlorides by low temperature solution polycondensation The polyamide films had strong tough flexible and amorphous properties These polymers revealed electrochromic characteristics both in the visible range and near infrared (NIR) region with a color change from pale yellowish at its neutral state to green and blue at its oxidized state at applied potentials ranging from 0 00 to 1 35 V Cyclic voltammetry (CV) of the polymer films cast onto an indium tin oxide (ITO) coated glass substrate exhibited two reversible redox couples at potentials of 0 80-087 V and 1 19-1 25 V respectively vs Ag/Ag(+) in acetonitrile solution From the combination of the experimental and computational study we proposed an oxidabon mechanism based on molecular orbital (MO) theory which well explains the CV experimental result (c) 2010 Wiley Periodicals Inc J Polym Sci Part A Polym Chem 48 5659-5669 2010[[note]]SC