High‐Performance n‐type Organic Semiconductors: Incorporating Specific Electron‐Withdrawing Motifs to Achieve Tight Molecular Stacking and Optimized Energy Levels

Novel π–conjugated cyanostilbene-based semiconductors (Hex-3,5-TFPTA and Hex-4-TFPTA) with tight molecular stacking and optimized energy levels are synthesized. Hex-4-TFPTA exhibits high-performance n-type organic field-effect transistor (OFET) properties with electron mobilities as high as 2.14 cm2 V−1s−1 and on-off current ratios