Triphenylamine-based multielectrochromic material and its neutral green electrochromic devices

► A novel star-shaped monomer TEPA was successfully synthesized. ► Its polymer PTEPA was obtained via electropolymerization. ► The polymer film had low electrochemical band gap and multi-electrochromic character. ► A neutral green electrochromic device based on PTEPA and PEDOT was also constructed. ► This device has good optical memories and redox stability.