PDF(Pubmed)
Abstract：
It has been two decades since biomimetic synthesis of conducting polymers were first reported, however, the systematic investigation of how catalysts influence the properties of the conducting polymers has not been reported yet. In this paper, we report a comparative study between peroxidase-like catalyst, dopants, and their effect on the properties of poly (3,4-ethylenedioxythiophene) (PEDOT), polypyrrole (PPY), and polyaniline (PANI). We also investigate the EDOT-Pyrrole and EDOT-Aniline copolymerization by enzymomimetic synthesis using two catalysts (Ferrocene and Hematin). It was found that, chemically, there are no detectable effects, only having small contributions in molar ratios greater than 0.7-0.3. Spectroscopic data provide solid evidence concerning the effect in the variation of the molar fractions, finding that, as the molar fraction of EDOT decreases, changes associated with loss of the conjugation of the structure and the oxidation state of the chains were observed. The electrical conductivity was considerably modified depending on the type of catalyst. Hematin produces conductive homopolymers and copolymers when doped with p-toluene sulfonic acid (TSA), while ferrocene produces low conductive copolymers under the same conditions. The mole fraction affects conductivity significantly, showing that as the EDOT fraction decreases, the conductivity drops drastically for both EDOT-PY and EDOT-ANI copolymers. The type of dopant also notably affects conductivity; the best values were obtained by doping with TSA, while the lowest were obtained when doping with polystyrene sulfonate (PSS). We also draw a biomimetic route to tailor the fundamental properties of conducting homopolymers and copolymers for their design and scaled-up production, as they have recently been found to have use in a broad range of applications.
摘要：
自从首次报道仿生合成导电聚合物以来，已经有二十年了。然而,关于催化剂如何影响导电聚合物性能的系统研究尚未报道。在本文中,我们报告了过氧化物酶样催化剂之间的比较研究，掺杂剂,以及它们对聚（3,4-亚乙基二氧噻吩）（PEDOT）性能的影响，聚吡咯(PPY),和聚苯胺(PANI)。我们还使用两种催化剂（二茂铁和Hematin）通过酶模拟合成研究了EDOT-吡咯和EDOT-苯胺共聚。结果发现,化学,没有可检测的影响，仅在大于0.7-0.3的摩尔比中具有小的贡献。光谱数据提供了有关摩尔分数变化影响的确凿证据，发现，随着EDOT的摩尔分数降低，观察到与结构的共轭丢失和链的氧化态相关的变化。电导率根据催化剂的类型而显著改变。Hematin在掺杂对甲苯磺酸（TSA）时会产生导电均聚物和共聚物，而二茂铁在相同条件下产生低导电共聚物。摩尔分数显著影响电导率，表明随着EDOT分数的降低，EDOT-PY和EDOT-ANI共聚物的电导率急剧下降。掺杂剂的类型也显着影响电导率；通过用TSA掺杂获得了最佳值，而最低的是用聚苯乙烯磺酸盐（PSS）掺杂时获得的。我们还绘制了一条仿生路线，为导电均聚物和共聚物的设计和扩大生产定制基本性能，因为它们最近被发现在广泛的应用中使用。
