Chung Jaeyub, Khot Aditi, Savoie Brett M, Boudouris Bryan W
Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.
Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States.
ACS Macro Lett. 2020 May 19;9(5):646-655. doi: 10.1021/acsmacrolett.0c00037. Epub 2020 Apr 16.
Macromolecules that exhibit both electron transport and ionic mass transport (i.e., mixed conducting polymers) are ascendant with respect to both emerging application spaces and the elucidation of their fundamental physical principles. The unique coupling between the two modes of conduction puts these materials at the center of many next-generation organic electronic applications. The molecular details of this coupling are also at the epicenter of outstanding questions about how these materials function; how monomer and macromolecular chemistry dictates observable properties; and ultimately, how these macromolecular materials can be rationally designed, processed, and implemented into high-performance devices. Here, we focus on what is currently known about coupled ionic-electronic transport in these polymers and where there are open opportunities in the field. These opportunities include the syntheses of designer macromolecules, the need for significant simulation efforts that provide molecular-level insights into the mixed conduction mechanism, and the need for advanced characterization techniques for real-time monitoring of polymer morphology, as this is critical to coupled ion-charge transport processes. Considering the early stage of this important subfield of polymer science, we also present our view of how the development of mixed conductors can benefit from the lessons learned from previous polymer-based electronic devices.
兼具电子传输和离子质量传输特性的大分子（即混合导电聚合物），在新兴应用领域以及其基本物理原理的阐释方面都正处于上升阶段。两种传导模式之间的独特耦合使这些材料成为许多下一代有机电子应用的核心。这种耦合的分子细节也是关于这些材料如何发挥作用、单体和大分子化学如何决定可观测特性，以及最终如何合理设计、加工这些大分子材料并将其应用于高性能器件等突出问题的核心。在此，我们聚焦于目前对这些聚合物中离子 - 电子耦合传输的了解，以及该领域存在的开放机会。这些机会包括设计大分子的合成、需要大量模拟工作以提供对混合传导机制的分子层面见解，以及需要先进的表征技术来实时监测聚合物形态，因为这对离子 - 电荷耦合传输过程至关重要。考虑到聚合物科学这一重要子领域尚处于早期阶段，我们还阐述了混合导体的发展如何能够从前辈基于聚合物的电子器件中吸取经验教训。
