| http://www.w3.org/ns/prov#value | - In general, the amphiphilic polyimide precursors of the present invention are soluble in an organic polar solvent such as N,N-dimethylacetamide, N,N-dimethylformamide, N,N-diethylformamide or hexamethylphosphoramide, and are soluble in a mixed solvent of the above-mentioned organic polar solvent and a usual organic solvent such as chloroform, and are slightly soluble or insoluble in a usual organi
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