Single Microwire Transistors of Oligoarenes by Direct Solution Process

A condensed benzothiophene peripherally carrying rich sulfur atoms favoring π−π stacking is developed through facile approaches. The 1H NMR and the absorption spectra strongly indicate that this molecule easily forms the self-assembled structures in solutions. Microwires directly precipitate from solution, and such 1D self-assembled nano- and microstructures can be controlled and tuned by changing solvents and casting on various substrates. Single microwire transistor based on such condensed benzothiophene is easily fabricated through solution process with carrier mobility as high as 0.01 cm2 V-1 s-1.