Angular-Shaped Naphthalene Bis(1,5-diamide-2,6-diylidene)­malononitrile for High-Performance, Air-Stable <i>N</i>‑Type Organic Field-Effect Transistors

The synthesis, characterization, and application of two angular-shaped naphthalene bis­(1,5-diamide-2,6-diylidene)­malono­nitriles (NBAMs) as high-performance air-stable <i>n</i>-type organic field effect transistor (OFET) materials are reported. NBAM derivatives exhibit deep lowest-unoccupied molecular orbital (LUMO) levels, suitable for air-stable <i>n</i>-type OFETs. The OFET device based on <b>NBAM-EH</b> fabricated by vapor deposition exhibits a maximum electron mobility of 0.63 cm² V^–1 s^–1 in air with an on/off current ratio (<i>I</i>_on/<i>I</i>_off) of 10⁵