Аннотация:A simple synthesis of highly planar extended π-electron molecules is of particularinterest for the development of efficient nonfullerene acceptors in organic solarcells with high light absorption and high mobility. Herein, two small-moleculeacceptors (MPU7 and MPU8) with a diketopyrrolopyrrole core connected toCPTCN end-capping groups (A2) via thienylethynylselenophene (MPU7) orthienylethynylthiophene (MPU8) linkers are conceived and synthesized. Planarityof the conjugated skeleton is achieved in both molecules, thanks to the existenceof four (Se⋯O or S⋯O) noncovalent, through-space intramolecular interactions.Both nonfullerene small-molecule acceptors show broad absorption in the visibleand near-infrared region (up to 930 nm). As a result, the binary solar cellsconstructed together with a polymer donor (P) display power conversionefficiencies as high as 14.12%. Devices built with MPU7 (containing theselenophene) show better film morphology, electron mobility, and higherefficiency than those containing thiophene (MPU8).