LAUSR

The past few decades have witnessed the tremendous development of semiconducting polymers in electronic applications, which is inextricably related to the diversity of polymer structure. The change of polymer structure significantly influences the polymer packing, thin film morphology, and other optoelectronic properties, thus meeting the need for different device applications. With the development of synthetic chemistry and theoretical computation, many high‐performance building blocks and polymers have emerged. Among them, isoindigo‐ and isoindigo derivatives‐based polymers are widely studied in various fields of organic electronics, and many of them showed excellent properties. This review summarizes the synthetic tactics of isoindigo‐derived monomers and polymers. Moreover, the structural modification strategies of polymers are discussed in detail, including the modification of isoindigo derivatives and the regulation of polymer type. Using isoindigo‐derived polymers, various applications, such as organic field‐effect transistors, chemical sensors, organic electrochemical transistors, organic phototransistors, organic photovoltaics, organic thermoelectrics, organic spin valves, and biophotonic applications, are introduced to illustrate the important effects of structural modification.