Isoindigo, a classical electron‐deficient unit for organic optoelectronic materials, has been widely used in organic field‐effect transistors (OFETs) and organic photovoltaic devices (OPVs). However, several intrinsic drawbacks, such as its non‐coplanarity and weak absorption in the visible‐light region, have hindered its further development. Recently, many optimized isoindigo derivatives have been successfully applied to OFETs and OPVs. This Focus Review discusses recent progress in the structural optimization of isoindigo‐based organic optoelectronic materials and provides meaningful guidelines for the design of high‐performance isoindigo derivatives for organic electronics.

中文翻译：

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基于异靛蓝的有机电子缺电子单元的演变：从天然染料到有机半导体

Isoindigo是用于有机光电材料的经典缺电子单元，已广泛用于有机场效应晶体管（OFET）和有机光伏器件（OPV）。但是，一些固有的缺点（例如，其不共面性以及在可见光区域的吸收弱）阻碍了它的进一步发展。近年来，许多优化的异靛蓝衍生物已成功应用于OFET和OPV。本《聚焦评论》讨论了基于异靛蓝的有机光电材料在结构优化方面的最新进展，并为有机电子高性能异靛蓝衍生物的设计提供了有意义的指导。