Self-assembled π-extended condensed benzothiophene nanoribbons for field-effect transistors

Nanostructures: A new air-stable π-extended condensed benzothiophene was prepared by starting from 4,8-dioctyl-oxybenzo[1,2-b:4,5-b']dithiophene in about 54 % overall yield. Highly ordered 1D organic nanoribbons of the resultant compound were formed by molecular self-assembly. An individual nanoribbon-based organic field-effect transistor (see figure) exhibited an average mobility of 0.05 cm(2) V(-1) s(-1).