Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (10): 1888-1894.doi: 10.3866/PKU.WHXB201509062

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Electrochemical and Electrochromic Properties of Multichromic Pendritic Poly(3, 6-dithienycarbazole) and Its Copolymer

Gao-Feng. BIAN1,2,Bin. HU3,Mi. OUYANG1,Ping-Jing. WANG1,Xiao-Jing. LÜ1,*(),Yu-Yu. DAI1,Cheng. ZHANG1,*()   

  1. 1 College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
    2 Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou 311121, P. R. China
    3 The Key Laboratory of Rare Earth Functional Materials and Applications, Zhoukou Normal University, Zhoukou 466001, Henan Province, P. R. China
  • Received:2015-07-13 Published:2015-10-10
  • Contact: Xiao-Jing. Lü,Cheng. ZHANG;
  • Supported by:
    the National Natural Science Foundation of China(51203138, 51273179);Intenatonal S&T Cooperation Program,China(2012DFA51210);Natural Science Foundation of Zhejiang Province, China(LY15E030006);Natural Science Foundation of ZhejiangUniversity of Technology, China(1401101002408)


A novel dendritic carbazole derivative (BTCPh) was designed and synthesized by simple chemical route. Its homopolymer and copolymer of BTCPh with (3, 4-ethoxylene dioxythiophene) (EDOT) were electrochemically synthesized and characterized. Cyclic voltammetry and UV-Vis spectroscopy were used to investigate the spectroelectrochemical and electrochromic properties of the two polymers. The copolymer P(BTCPh-EDOT) film revealed richer electrochromic color than that of the homopolymer PBTCPh film (yellow, green, blue, and grey) and showed five different colors (orange, green, brown-green, blue, and grey) under various potentials, which may be attributed to the introduction of the EDOT unit generating more doped states of the polymer, resulting in richer colors. Electrochromic switching tests indicated that both polymers possess good optical contrast and fast switching times. These properties show promise for potential applications on smart windows and displays.

Key words: Electrochromism, Carbazole, Thiophene, Dendritic, EDOT