Solution-Processable Copolymers Based on Triphenylamine and 3,4-Ethylenedioxythiophene: Facile Synthesis and Multielectrochromism.

摘要: In comparison with traditional inorganic electrochromic materials, organic polymers offer advantages such as fast switching speed, flexibility, lightweightness, low cost and nontoxicity, solution-processability, color tunability. Herein, a series of hyper-branched copolymers are synthesized from triphenylamine 3,4-ethylenedioxythiophene different feed ratios via iron(III) chloride (FeCl3 )-mediated oxidative polymerization. The resultant organic-soluble easily processable their corresponding devices found to be stable limited degradation upon 2500 cycles. addition facile synthesis achieve solution-processable polymers, studies also show that the exhibit multielectrochromic properties give rise five colored states oxidative-doping by applying an external voltage between 0 2.0 V, providing interesting example unique among up colors, yellow at neutral state, pale green, purple, orange, finally gray.