Highly pure, ion-free semiconducting poly thio achieved, process for their preparation and their use for the manufacture of electronic components

摘要

Polythiophenes are in the form of organic materials for the manufacture of electronic components of interest; known manufacturing process, however, lead to contamination by metal - and halide ions, which is not reproducible properties to electronic components produced therefrom lead. It should therefore be a process for their removal are provided.The method according to the invention comprises the steps of: (a) treating polythiophene with an organometallic compound in an inert solvent and subsequent isolation of the thus treated polythiophene; (b) dissolving the in the step (a) polythiophene obtained in a water-soluble organic solvent and intimately contacting the solution thus obtained (organic phase) with an aqueous solution of a metal ion complexing by means of (aqueous phase); (c) separating the aqueous and the organic phase and isolating the high-purity, ion-free polythiophene from the organic phase.According to the invention, a highly pure, ion-free polythiophene with a total content of halogens of less than 100 ppm and a total content of metal ions of less than 20 ppm is made available.The polythiophenes according to the invention are suitable for the production of an electronic component with reproducible properties.