Synthesis, characterization and electrochromic properties of hybrid triphenylamine-dithiafulvene polymer films
Download as PDF
Yi Wang, Zhongquan Wan, Junlong Niu, Shengwei Tang, Xianghan Liu, Yuyu Yang and Chunyang Jia
A dithiafulvenyl-substituted triphenylamine derivative (TPA-DTF) has been synthesized and employed to deposit an electrochromic polymeric film by convenient electrochemical oxidative coupling reactions. Furthermore, the electrochemical and optical properties of the polymer film were tested using UV-visible spectroscopic, cyclic voltammetry and film morphology analysis. The results showed that the polymeric film shows broad absorption around 650 nm in the visible region, with color changes from light-yellow to blue corresponding potential difference varying from -0.2 to 0.8 V. The polymer film exhibited fast switching time (1.3 and 1.4 s), high optical contrast (over 40%) and high coloration efficiency (CE) of 303.16 cm2 C−1.
Electrochromic, triphenylamine, electropolymerization