An oligomer semiconductor with an asymmetric cyclohexylhexyl end group for solution-processed organic field-effect transistors

We report on the synthesis of an oligomer semiconductor, 2-(6((6-cyclohexylhexyl)oxy)naphthalen-2-yl) anthracene (C-HNA), and research its potential application as a thin-film active layer for organic field-effect transistors (OFETs). The measured field-effect mobility of the spin-coated C-HNA films for OFETs was 2.3 x 10(-2) cm(2)/(V.s). The performance of the resulting OFETs was attributed to the packing tendency of the asymmetric oligomer, where the asymmetric cyclohexylated alkyl chains were vertically aligned to the substrates, which contributed to favorable charge transfer.