In recent years, noncovalently assembled monolayers of conjugated, semiconducting polymers with thickness less than 5 nm have attracted increasing attention because of their determining role in charge carrier transport in field-effect transistors and their multifunctionality in other electronic devices. This article reviews recent advances in various promising and cutting-edge polymer monolayers for high-performance field-effect transistors with the main focuses on: (I) solution processing techniques for long-range ordering; (II) the importance of polymer aggregation in solution; (III) the effect of polymer packing orientation; (IV) engineering of the interface between the polymer monolayer with electrodes and dielectrics; (V) investigating the mechanism of charge carrier transport. By summarizing the field-effect mobilities of the different classes of conjugated semiconducting polymer monolayers, further understanding of correlation between monolayer structure and device property will be revealed. Furthermore, we also highlight the recent progress of other electronic applications of polymer monolayers such as integrated circuits, chemical sensors, and light-emitting diodes. Finally, we propose future research opportunities and remaining challenges in this exciting research field.

近年来，厚度小于5 nm的共轭半导电聚合物的非共价组装单层吸引了越来越多的关注，因为它们在场效应晶体管中的载流子传输中起决定性作用，并且在其他电子设备中具有多功能性。本文回顾了用于高性能场效应晶体管的各种有前途和最前沿的聚合物单分子层的最新进展，主要关注于：（I）远程订购的溶液处理技术；（II）溶液中聚合物聚集的重要性；（三）聚合物堆积取向的影响；（IV）工程化具有电极和电介质的聚合物单层之间的界面；（五）研究电荷载体运输的机理。通过总结不同类别的共轭半导体聚合物单层的场效应迁移率，将揭示出对单层结构与器件性能之间相关性的进一步理解。此外，我们还重点介绍了聚合物单层的其他电子应用的最新进展，例如集成电路，化学传感器和发光二极管。最后，我们提出了这个令人兴奋的研究领域的未来研究机会和尚存的挑战。