Oligothiophene‐Based Networks Applied for Field‐Effect Transistors

A new type of semiconducting material based on polymerizable oligothiophenes (see Figure) has been prepared. In field‐effect transistors, a charge‐carrier mobility of 10 –3 cm 2 V –1 s –1 is observed prior to polymerization. Photopolymerization to a polymer network provides mechanical stability and allows direct photopatterning of the semiconductor. These materials also appear more stable to oxidative doping than polythiophenes.