Compositions comprising cationic fluorinated ether silanes, and related methods

A composition comprising at least one compound of Formula II

• wherein
• Rf has the structure —CF(CF3)(OCF2CF(CF3))mOCF2CF2CF2CF2O(CF(CF3)CF2O)nCF(CF3)—, wherein m is an integer from 1 to 12 and n is an integer from 2 to 10;
• b and c are each independently an integer from 1 to 3;
• A is a linking group having the formula —CdH2dZCgH2g—, wherein d and g are independently integers from 0 to 10 and Z is selected from the group consisting of a covalent bond, a carbonyl group, a sulfonyl group, a carboxamido group, a sulfonamido group, an iminocarbonyl group, an iminosulfonyl group, an oxycarbonyl group, a urea group, a urethane group, a carbonate group, and a carbonyloxy group;
• Y is a bridging group comprising an alkylene group having 1 to 6 carbon atoms;
• Q is a connecting group comprises an alkylene group having 1 to 6 carbon atoms;
• R1 and R2 are independently alkyl groups having 1 to 4 carbon atoms;
• each R3 is independently selected from the group consisting of hydroxy groups, methoxy groups, ethoxy groups, acetoxy groups, chloro groups, and polyether groups;
• and
• X− is a counter ion selected from the group consisting of a halide, sulfate, phosphate, an alkanoate, an alkyl sulfonate, an aryl sulfonate, an alkyl phosphonate, an aryl phosphonate, a fluorinated alkanoate, a fluorinated alkyl sulfonate, a fluorinated aryl sulfonate, a fluorinated alkyl sulfonimide, a fluorinated alkyl methide, and combinations thereof.