Solution-processable low-bandgap 3-fluorothieno[3,4-b]thiophene-2-carboxylate-based conjugated polymers for electrochromic applications
作者:Zugui Shi、Wei Teng Neo、Ting Ting Lin、Hui Zhou、Jianwei Xu
DOI:10.1039/c5ra19956e
日期:——
paper, a series of low-bandgap donor–acceptor (D–A) conjugated polymers with 3-fluorothieno[3,4-b]thiophene-2-carboxylate (FTT) as an acceptor and ethylenedioxythiophene (EDOT) (P1), acyclic dioxythiophene (AcDOT) (P2) or propylenedioxythiophene (ProDOT) (P3) as donors were synthesized via Stille polymerization. The resultant polymers have good solubility in organic solvents. The polymers were characterized
在本文中,一系列以3-氟噻吩并[3,4- b ]噻吩-2-羧酸酯(FTT)为受体和乙二氧基噻吩(EDOT)的低带隙供体-受体(DA)共轭聚合物(P1)通过合成非环二氧噻吩(AcDOT)(P2)或丙烯二氧噻吩(ProDOT)(P3)作为受体。斯蒂勒聚合。所得聚合物在有机溶剂中具有良好的溶解性。通过凝胶渗透色谱法(GPC),核磁共振谱法(NMR)和热重分析法(TGA)对聚合物进行表征。研究了它们的电化学,形态和电致变色(EC)特性,并制造并表征了其吸收透射型电致变色器件(ECD)。在中性状态下,聚合物表现出深品红色(P1)至蓝色(P2,P3)的色相,经电化学氧化后,它们显示出具有良好光学对比度的灰色调(可见光和近红外光的对比度为19-37%和57-58%) (NIR)区域),良好的着色效率(158–380和279–378 cm 2在环境条件下且未封装任何ECD的情况下,可见光和NIR区域分别为C