Polymers and polymer coatings

A polymer comprising formula I:

• wherein m1 is about 5 to about 2000;
• m2 is absent or is independently about 5 to about 2000;
• n1 is about 5 to about 2,000;
• n2 is absent or is independently about 5 to about 2000;
• n3 is absent or is independently about 5 to about 2000;
• the dispersement of each individual n1, n2, and n3 subunit on either side of either z* is random and each individual n1, n2, and n3 subunit occurs interchangeably with any other n1, n2, or n3 subunit within the brackets of formula I;
• each R1 is independently hydrogen or methyl and each R2 is independently hydrogen or methyl provided that at least one of R1 and R2 within each n subunit is hydrogen;
• each R3 is independently H, OH, or halo;
• or
• alkyl wherein alkyl is optionally at least partially fluorinated;
• alkyl-terminated (-ethylene glycol-)n wherein n is about 2 to about 24;
• wherein each alkyl or alkyl-terminated (-ethylene glycol-)n is covalently bonded to the carbon of R3 through an ester, amide, or amino group;
• or
• a moiety of formula Z:
• wherein each X is independently —O—C(═O)—CH2—O—, —NH—C(═O)—CH2—O—, or —NH—, linking the moiety of formula Z to the carbon attached to R3, each q is independently 1 to about 25, and each r is independently 1 to about 18;
• provided that at least one R3 of formula I is a moiety of formula Z;
• each R4 and R5 is independently hydrogen, R3, or absent, provided that when R4 is hydrogen, R5 is R3;
• and when R4 is R3, R5 is hydrogen;
• and
• each individual bond represented by - - - is an optional double bond, provided that when the bond between the carbons of R4 and R5 is present, R4 and R5 are absent.