Patent ID: 8436116

Claim:
A polymer comprising a plurality of first subunits, a plurality of second subunits, and a plurality of third subunits wherein the first subunits are represented by formula I: the second subunits are represented by formula II: and the third subunits are represented by formula VIII: wherein, independently for each occurrence, A is alkylene; E is —O—; J is absent; K is absent; m is 0; n is 1; p is 1; q is 0; R is alkyl; R 1 is hydrogen or alkyl; R 2 is absent, alkylene, cycloalkylene, heterocyclylene, arylene, heteroarylene, cycloalkylalkylene, heterocyclylalkylene, arylalkylene or heteroarylalkylene; R 3 is hydrogen; R 4 is absent; R 5 is alkyl; W is a redox-responsive moiety; X is —O—; Y is absent; Z is —O—; and depicts a bond to a first subunit, a bond to a second subunit, a bond to a third subunit, a bond to a hydrogen atom, or a bond to a radical formed by the decomposition of an initiator, provided at least one depicts a bond to a radical formed by the decomposition of an initiator; and the polymer preferentially binds to an alcohol over water when the redox-responsive moieties are uncharged; and the polymer preferentially binds to water over the alcohol when the redox-responsive moieties are charged.