| http://www.w3.org/ns/prov#value | - The method of claim 5, wherein said dicarboxylic acid or acid anhydride thereof is a compound selected from the group consisting of malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, phthalic acid, isophthalic acid, terephthalic acid, maleic anhydride, itaconic anhydride, succinic anhydride, citraconic anhydride, and phthalic anhydri
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