Electroactive covalent organic frameworks: a new choice for organic electronics

Covalent organic frameworks (COFs) feature covalent bond-supported crystallinity along with high encapsulating and mass transport abilities. Together with the ease of chemical addition of electroactive moieties, these properties have recently raised interest in this class of material in organic electronics. In this review, we systematically summarize the utilization of advantageous characteristics of COFs to fulfill different functions in electronic processes, resulting in various applications. Broadly, COFs have been successfully implemented as conductive or semiconductive components for electronic devices, such as organic photodetector and photovoltaics, organic transistors, organic light-emitting devices, and organic sensor and memory devices. Simultaneously, general tactics to provide electroactive functionalities are discussed, providing open considerations and inspiration for future electronic design.