Oligofluorene-Thiophene Derivatives as High Performance Semiconductors for Organic Thin Film Transistors

A series of alkyl chain end capped oligofluorene-thiophenes have been prepared with high yields using Suzuki or Stille coupling reactions. The electronic and optical properties of the thin films deposited at different substrate temperatures have been investigated. Morphological studies using transmission electron microscopy (TEM) revealed well-interconnected microcrystalline domains in these thin films.