The synthesis of regioregular head-to-tail poly[3-(6-bromohexyl)thiophene] is reported, together with its reaction with 2-carboxyanthraquinone (Anth) to give an example of a regioregular polythiophene containing pendant functional groups (87% loading). NMR data on the two soluble polymers are reported together with preliminary studies of some of their physical properties. Cyclic voltammetric studies of anthraquinone polymer coated electrodes show that the observed response is coverage dependent: thin films display four redox couples due to the Anth0/–/2– processes and the p- and n-doping of the conjugated thiophene backbone. Thick films are rectifying in the sense that reduction of the Anth groups is inhibited on the negative sweep. Spectroelectrochemical studies confirm the nature of the anodic p-doping process (the film turns red to nearly colourless) and show characteristic changes on reduction (red to black).
报道了区域规整头尾聚[3-(6-
溴己基)
噻吩]的合成,及其与 2-羧基
蒽醌 (Anth) 的反应,给出了含有侧挂官能团的区域规整聚
噻吩的例子(87% 负载量) )。报告了两种可溶性聚合物的 NMR 数据以及对其一些物理性质的初步研究。
蒽醌聚合物涂层电极的循环伏安研究表明,观察到的响应与覆盖范围相关:由于 Anth0/–/2– 过程以及共轭
噻吩主链的 p 和 n 掺杂,薄膜显示出四个氧化还原对。厚膜正在整流,因为 Anth 基团的还原在负扫描上受到抑制。光谱电
化学研究证实了阳极 p 掺杂过程的性质(薄膜变成红色到几乎无色),并显示出还原时的特征变化(红色到黑色)。