Recent advances in organic electronics of novel materials and optoelectronic devices spark great interest in the design and synthesis of high-performance polymer semiconductors.During the last decade,isoindigo(IID)and its derivatives have sprung up as common electron-deficient building blocks and obtained extensive applications in organic field-effect transistors(OFETs).In this review,we first present the current status,basic principles,and general material design strategies for OFETs.Then,multiple IID-type acceptors,mature synthetic routes to monomers,and typical IIDs-based conjugated polymers are summarized.We also introduce side-chain engineering and cutting-edge applications,like stretchable transistors,sensing,active-matrix driving,etc.,of the classic copolymer poly(isoindigo-co-bithiophene).Green polymerization approaches towards conjugated polymers incorporating IIDs are subsequently discussed for efficient polymerization.Finally,we conclude this review and propose in-depth prospects with respect to material synthesis and device applications.Undoubtedly,IIDs-based conjugated polymers would occupy a significant position in the future of organic electronics,due to diverse building blocks,mature synthetic pathways,tunable side chains,and unique optoelectronic properties.

Beijing National Laboratory for Molecular Sciences,Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China

[1]Mingliang Zhu;Yunlong Guo;Yunqi Liu-.A thriving decade:rational design,green synthesis,and cutting-edge applications of isoindigo-based conjugated polymers in organic field-effect transistors)[J].中国科学:化学（英文版）,2022(07):1225-1264

isoindigo,IIDs

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