Fe(ClO4)3氧化合成聚乙撑二氧-三噻吩

摘要: 分别以Fe(Cl O4)3、FeCl3、Fe2(SO4)3作为氧化剂,对3′,4′-乙撑二氧-2,2′∶5′,2″-三噻吩(TET)进行了化学氧化聚合,并研究了聚合条件对聚合物结构和电化学性能的影响。利用红外光谱、紫外光谱、X射线衍射对聚合物进行了表征,采用循环伏安、恒电流充放电等电化学方法研究了聚合物的电化学性能。结果表明:当TET与Fe(Cl O4)3的摩尔比为1∶4,反应温度为18℃,反应时间为12 h时,聚3′,4′-乙撑二氧-2,2′∶5′,2″-三噻吩(PTET)具有更好的共轭结构和电化学性能,导电率可达1.47 S/m,比电容可达133 F/g。

Abstract: 3′,4′Ethylenedioxy2,2′:5′,2″Terthiophene (TET) was synthesized by oxidation polymerization with different oxidants (Fe(ClO4)3、FeCl3、Fe2(SO4)3). The effect of reaction conditions such as oxidant concentration, reaction time and temperature on the property of final polymers were investigated. The polymers were characterized by UVVis, FTIR, XRD. The electrochemical behaviors of the polymes were evaluated by cyclic voltammetry(CV) and galvanostatic chargedischarge tests. Results show that PTET has the highest conductivity of 1.47 S/m and the specific capacitance of 133 F/g while Fe(ClO4)3 (mole ratio of TET and Fe(ClO4)3 was 1∶4) was used as an oxidant and the polymerization was proceeded for 12 h at 18 ℃.