Intrinsically conducting polymers ICPs state

To summarize, the data for 3,4-dimethoxythiophene and 3-alkoxy-4-meth-ylthiophenes were especially very promising with respect to technical usage in high conductivity applications, and the structural prerequisites necessary for the development of such materials seemed to be understood. But this knowledge, which describes the research state of around 1990, did not result in a single technical product on the basis of any 3-alkoxythiophene derivative, whether substituted by a further alkoxy residue or methyl group or not. In particular, intrinsically conductive polymers (ICP) based on the Hoechst AG patents could not be commercialized at all, and Hoechst finished this development. 

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