Abstract

The synthesis and characterization of several para-linked aromatic poly(amic ethyl ester)s based on 2,5-bis(ethoxycarbonyl)terephthalic acid and several substituted 1,4-diaminobenzene and noncoplanar 4,4'-diaminobiphenylene derivatives are described. Depending on the degree and type of substitution, the precursors are soluble to high concentrations in solvents such as DMF or NMP without the addition of inorganic salts. TGA and FTIR measurements show that the imidization process for these materials is controllable and goes to completion

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