Tuning the electronic properties of thiophene-annulated NDIs: the influence of the lateral fusion position

A new asymmetric thiophene-annulated NDI (NTTI) has been designed and synthesized. NTTI exhibits an enhanced polarized electronic structure relative to the symmetric analogue (NDTI). The fusion position of thiophene affects the optical, electrochemical, and charge transport properties. The OFET device based on single crystalline microribbons of C8-NTTI shows an electron mobility up to 1.47 cm2 V-1 s-1.