| 摘要 |
A compound having the general structure (I), wherein A<1> is a monovalent, divalent, or trivalent aromatic heterocyclic group comprising heterocyclic rings; R<1>, R<2>, and R<3> are divalent fluorinated groups; m, n, and p are 0 to 3, with the proviso that m + n + p is equal to 1, 2, or 3 so that the carbon atoms of the heterocyclic rings are fully substituted by acidic fluorinated sulfonyl-containing groups; q is 0 or 1; Y<1> is -OH, -NH-SO2-R<4> wherein R<4> is a monovalent fluorinated group, -NH-, -NH-SO2-R<5>-SO2-NH-, or -NH-SO2-R<6>-A<2>-R<7>-SO2-NH-, wherein A<2> is a divalent heterocyclic group and R<5>, R<6>, and R<7> are divalent fluorinated groups; and Y<2> and Y<3> are -OH or -NH-SO2-R<4>; with the proviso that when m and n are each equal to 1, p is 0 to 1, and q is 0, Y<1> is selected from the group consisting of -NH-, -NH-SO2-R<5>-SO2-NH-, and -NH-SO2-R<6>-A<2>-R<7>-SO2-NH-. By compound is meant either a small molecule or a repeat unit of a polymer. The invention also provides a solid polymer electrolyte membrane, a membrane electrode assembly, a gas diffusion electrode, an electrocatalyst coating composition, and a fuel cell. |
