Layered Thiadiazoloquinoxaline‐Containing Long Pyrene‐Fused N‐Heteroacenes

• DOI: 10.1002/anie.201803230
• Publication Date: 2018-08-04T22:13:04Z
• Authors: Ben‐Lin Hu; Ke Zhang; Cunbin An; Dieter Schollmeyer; Wojciech Pisula; Martin Baumgarten
• Keywords: 01 natural sciences; 0104 chemical sciences

AbstractThree thiadiazoloquinoxaline‐containing long pyrene‐fused N‐heteroacenes with 8, 13, and 18 rings were designed and synthesized. They show high electron affinities (EAs) of approximately 4.1 eV, which were derived from the onset of the reduction peaks in cyclic voltammetry. Crystal structure analysis revealed in‐plane extension through close contacts between thiadiazole units as well as layered packing, enabling in‐plane and interlayer electron transport. Organic field‐effect transistor devices provided electron mobilities, which suggest a potential way to enhance the charge transport in long N‐heteroacenes.