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 cm2 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.