Fluorine-containing polymer comprising a sulfinate-containing molecule

A composition comprising:

• a fluorine-containing polymer comprising an end-group having a structure selected from:
• and combinations thereof;
• wherein X1, X2, and X3 are each independently selected from H, F, Cl, a C1 to C4 alkyl group, and a C1 to C4 fluorinated alkyl group;
• R7 is a linking group comprising at least 2 or more catenary atoms;
• and Z1 and Z2 are independently selected from F, CF3, and a perfluoroalkyl group, wherein the fluorine-containing polymer is partially fluorinated and wherein the fluorine-containing polymer is derived from the polymerization of a monomer and a sulfinate-containing molecule, wherein the sulfinate-containing molecule is selected from the group consisting of:
• and
• (c) combinations thereof,
• wherein X1, X2, and X3 are each independently selected from H, F, Cl, a C1 to C4 alkyl group, and a C1 to C4 fluorinated alkyl group;
• R is a linking group;
• Z1 and Z2 are independently selected from F, CF3, and a perfluoroalkyl group;
• R1 and R2 are end-groups;
• p is 0 or 1;
• m is at least 2;
• and M is a cation.