TY - PAT AB - The invention relates to a process of prepg. substituted pentacenes, to novel pentacenes prepd. by this process, to the use of the novel pentacenes as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors (FETs), electroluminescent, photovoltaic and sensor devices, and to FETs and other semiconducting components or materials comprising the novel pentacenes. Thus, 1,4,8,11-tetramethyl-6,13-bis(triethylsilylethynyl)dentacene was prepd. and used as a semiconductor for an OFET device, showing high mobility and a high on/off ratio. [on SciFinder(R)] AU - Tierney,S AU - Heeney,M AU - Bailey,C AU - Zhang,W PY - 2008/// TI - WO2008128618. Process for preparing substituted pentacenes. ER -