Electrosynthesis and Characterization of Aminomethyl Functionalized PEDOT with Electrochromic Property  

作　　者：Hui Sun Bao-yang Lu Du-fen Hu 段学民 徐景坤 Shi-jie Zhen Kai-xin Zhang Xiao-fei Zhu Li-qi Dong Dai-ze Mo 

机构地区：[1]School of Pharmacy, Jiangxi Science & Technology Normal University

出　　处：《Chinese Journal of Polymer Science》2015年第11期1527-1537,共11页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51263010,51303073,51272096 and 51403008);Natural Science Foundation of Jiangxi Province(Nos.20122BAB216011,20142BAB206028 and 2014BAB216029);the Science and Technology Landing Plan of Universities in Jiangxi province(No.KJLD14069)

摘　　要：We herein report the electrosynthesis of an aminomethyl functionalized poly（3,4-ethylenedioxythiophene）（PEDOT） derivative, poly（2＇-aminomethyl-3,4-ethylenedioxythiophene）（PEDOT-Me NH2）, in CH2Cl2-Bu4NPF6（0.1 mol·L^-1） system containing 2% boron trifluoride diethyl etherate（BFEE）. The electrochemical behavior, structure characterization, thermal properties and surface morphology of this novel polymer were systematically investigated by cyclic voltammetry（CV）, Fourier-transform infrared spectroscopy（FTIR）, thermogravimetry（TG） and scanning electron microscopy（SEM）, respectively. Electrochemistry results demonstrated that PEDOT-Me NH2 film displayed good redox properties and high electrochemical stability. Besides, PEDOT-Me NH2 films exhibited the electrochromic nature with obvious color changing from purple in the reduced form to blue upon oxidation. By further investigation, kinetic studies revealed that PEDOT-Me NH2 film had decent contrast ratio（41.8%）, favorable coloration efficiency（152.1 cm^2·C^-1）, low switching voltages and moderate response time（2.4 s）. Satisfactory results implied that the obtained PEDOT-Me NH2 film is a promising optoelectronic material and holds promise for electrochromic devices and display applications.We herein report the electrosynthesis of an aminomethyl functionalized poly（3,4-ethylenedioxythiophene）（PEDOT） derivative, poly（2＇-aminomethyl-3,4-ethylenedioxythiophene）（PEDOT-Me NH2）, in CH2Cl2-Bu4NPF6（0.1 mol·L^-1） system containing 2% boron trifluoride diethyl etherate（BFEE）. The electrochemical behavior, structure characterization, thermal properties and surface morphology of this novel polymer were systematically investigated by cyclic voltammetry（CV）, Fourier-transform infrared spectroscopy（FTIR）, thermogravimetry（TG） and scanning electron microscopy（SEM）, respectively. Electrochemistry results demonstrated that PEDOT-Me NH2 film displayed good redox properties and high electrochemical stability. Besides, PEDOT-Me NH2 films exhibited the electrochromic nature with obvious color changing from purple in the reduced form to blue upon oxidation. By further investigation, kinetic studies revealed that PEDOT-Me NH2 film had decent contrast ratio（41.8%）, favorable coloration efficiency（152.1 cm^2·C^-1）, low switching voltages and moderate response time（2.4 s）. Satisfactory results implied that the obtained PEDOT-Me NH2 film is a promising optoelectronic material and holds promise for electrochromic devices and display applications.

关 键 词：Conducting polymers Poly（3 4-ethylenedioxythiophene） derivatives Aminomethyl group Electrochemical polymerization Electrochromics 

分 类 号：TB383.2[一般工业技术—材料科学与工程]