Preparation and optoelectronic behaviours of novel electrochromic devices based on triphenylamine-containing ambipolar materials

Abstract

Two new triphenylamine-containing ambipolar electrochromic materials with ether linkages, 1-(2-(4-(bis(4-methoxyphenyl)amino)phenoxy)ethyl)-1′-ethyl-[4,4′-bipyridine]-1,1′-diium tetrafluoroborate (TPA-Vio) and 2-(4-(bis(4-methoxyphenyl)amino)phenoxy)anthracene-9,10-dione (TPA-OAQ), were successfully synthesized and fabricated into novel electrochromic devices. These devices demonstrated interesting and much higher performance than devices derived from TPA-3OMe with respect to driving voltage, switching time, and electrochromic stability.