摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of purifying polythiophene more shortly and more efficiently on a larger scale. SOLUTION: Impurities are removed from polythiophene by a step of mixing a composition containing polythiophene, water, and an organic liquid at a temperature at which the organic liquid dissolves the polythiophene, a step of separating the water phase from the organic phase and recovering the organic phase, a step of adding water to the recovered organic phase and mixing the obtained composition at a temperature at which the organic liquid dissolves the polythiophene, a step of separating the water phase from the organic phase and recovering the organic phase, and a step of precipitating a polythiophene solid from the recovered organic phase. COPYRIGHT: (C)2007,JPO&INPIT
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