AbstractDiketopyrrolopyrrole (DPP) derivatives with thiophene capping rings are widely used as semiconductors in organic electronics. Their optoelectronic properties can be adjusted by adding different electroactive groups or by extending the conjugation of the central core, as well as by regulating their self‐assembly through noncovalent interactions. One effective strategy demonstrated to improve the performance and morphology of organic solar cells is incorporating hydrogen‐bonding units into DPPs. While the functionalization of the DPP lactams and the coupling of aromatic units to the thiophene rings are the most common procedures to tune the properties of such derivatives, modifying the thiophene capping units with hydrogen‐bonding groups is a challenging synthetic task. Despite this difficulty, incorporating amide‐containing substituents into the thiophene rings of single core thiophene‐capped DPP derivatives could yield exciting results, as the advantages of having hydrogen‐bonded π‐conjugated systems based on these modified DPPs have not been explored thoroughly. This work reports on an efficient method for synthesizing such derivatives.
摘要具有噻吩封端环的二酮吡咯并吡咯(DPP)衍生物被广泛用作有机电子学中的半导体。通过添加不同的电活性基团或扩展中心核的共轭作用,以及通过非共价相互作用调节其自组装,可以调整它们的光电特性。在 DPP 中加入氢键单元是改善有机太阳能电池性能和形态的一种有效策略。虽然 DPP 内酰胺的官能化和芳香族单元与噻吩环的偶联是调整此类衍生物性质的最常见程序,但用氢键基团修饰噻吩封端单元却是一项具有挑战性的合成任务。尽管存在这一困难,但在单核噻吩封端 DPP 衍生物的噻吩环中加入含酰胺的取代基可能会产生令人兴奋的结果,因为基于这些改性 DPP 的氢键 π 共轭体系的优势尚未得到深入探讨。本研究报告介绍了合成此类衍生物的有效方法。