Processes for preparation of sulfonated polyaniline compositions and uses thereof
AssigneeThe Ohio State University Research Foundation
InventorsArthur J. Epstein, Jiang Yue
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Abstract
Sulfonic acid-substituted polyaniline compositions and their derivatives are produced by reacting a polyaniline polymer with SO.sub.3 gas. The sulfonated polyaniline compositions have faster electronic and optical responses to electrochemical potentials and improved environmental stability solubility than the parent polyaniline polymer.
Claims12
A process for producing a sulfonated polyaniline composition having a chemical composition of formula I ##STR8## wherein O.ltoreq.y.ltoreq.1, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of H, SO.sub.3.sup.-, --SO.sub.3 H, --R.sub.7 SO.sub.3.sup.-, --R.sub.7 SO.sub.3 H, --OCH.sub.3, --CH.sub.3, --C.sub.2 H.sub.5, --F, --Cl, --Br, --I, --NR.sub.7 2, --NHCOR.sub.7, --OH, --O.sup.-, --SR.sub.7, --OR.sub.7, --OCOR.sub.7, --NO.sub.2, --COOH, --COOR.sub.7, --COR.sub.7, --CHO and --CN, wherein R.sub.7 is a C.sub.1 -C.sub.8 alkyl, aryl or aralkyl group, and wherein the fraction of rings containing at least one R.sub.1, R.sub.2, R.sub.3 or R.sub.4 group being an --SO.sub.3.sup.-, --SO.sub.3 H, --R.sub.7 SO.sub.3.sup.-, or --R.sub.7 SO.sub.3 H varies from approximately 20 percent to one hundred percent, comprising reacting the polyaniline polymer or substituted polyaniline polymer and SO.sub.3 gas.
Dependencies are inferred from the claim text.