m and n are independently zero or an integer of 1 to 4; D is selected from the group consisting of a covalent bond, ##STR85## and combinations thereof, where r and r' are independently integers of 1 to about 20, s is independently an integer of 1 to about 10 for each (Cs H2s O), t is an integer of 1 to about 6, and p is an integer of 0 to about 4; Rf is a linear or branched, perfluorinated or par