Patent ID: 7709055

Claim:
A compound of formula (II): wherein m 1 is about 5 to about 2000; m 2 is absent or is independently about 5 to about 2000; n 1 is about 5 to about 2,000; n 2 is 0 to about 100; n 3 is 0 to about 100; the dispersement of each individual n 1 , n 2 , and n 3 subunit on either side of either z* is random and each individual n 1 , n 2 , and n 3 subunit occurs interchangeably with any other n 1 , n 2 , or n 3 subunit within the brackets of formula (II); X 1 is hydrogen, alkyl, or aryl; X 2 is hydrogen, alkyl, or aryl; wherein any alkyl or aryl can optionally be substituted with one or more halo, hydroxy, (C 6 -C 10 )aryl, nitro, cyano, (C 1 -C 8 )alkoxy, trifluoromethyl, poly(ethylene glycol), oxo, —C(═O)OR a , —OC(═O) R a , wherein each R a is independently hydrogen, (C 1 -C 6 )alkyl, or (C 1 -C 6 )alkoxy; or NR b R c , wherein R b and R c are each independently hydrogen, or (C 1 -C 6 )alkyl; each R 1 is independently hydrogen or methyl and each R 2 is independently hyrogen or methyl provided that at least one of R 1 and R 2 within each n subunit is hydrogen; each R 3 is independently H, OH, halo, or wherein x is independently 2 to 10; and y is independently 5 to 15; wherein p is independently 2 to 24; or wherein q is independently 0 to about 25; and r is independently 1 to about 18; provided that at least one R 3 is (a), (b), or (c); each R 4 and R 5 are independently hydrogen, R 3 , or are absent, provided that when R 4 is hydrogen, R 5 is R 3 ; and when R 4 is R 3 , R 5 is hydrogen; and the bond represented by - - - is absent or is present, provided that when the bond is present, R 4 and R 5 are absent.