Charge-Carrier Transport in Thin Films of π-Conjugated Thiopheno-Azomethines

► Highly π-conjugated thiophenoazomethines were prepared for mobility measurements. ► Organic field effect transistors were prepared with the thiophenoazomethines. ► The polythiophenozomethine exhibited ambipolar transport properties. ► The thiophenoazomethine triad exhibited uniquely p-type transport properties. ► The triad's mobility increased to 3 × 10−5 cm2/V s with annealing.