Synthesis of Nitrogen-Containing Isoindigo Derivatives and Their Applications in Optoelectronic Materials

Isoindigo has played an important role in organic optoelectronic materials as an excellent acceptor building block due to its planarity and electron-withdrawing capability. The modification, of isoindigo has also become the focus of academia. Recently, great achievements have been made in the synthesis of nitrogen-containing isoindigo derivatives and their applications as optoelectronic materials. The incorporation of nitrogen atom can further adjust the electron push/pull ability and the planarity of isoindigo derivatives, thereby tune their optoelectronic properties. The development of nitrogen-containing isoindigo derivatives, as well as their applications in optoelectronic materials, which we hope would provide useful information for the design of conjugated optoelectronic materials, is summarized.