Patent ID: 7993792

Claim:
A block copolymer having formula 1a or formula 1b: (A m B n ) p 1a A m B n C s 1b wherein A is a first polymer segment that is repeated m times to form first polymer block A m that is either hydrophobic or hydrophilic; B is a second polymer segment that is repeated n times to form second polymer block B n that is either hydrophobic or hydrophilic; C is a third polymer segment that is repeated s times to form third polymer block C s that is either hydrophobic or hydrophilic; at least one of A, B, and C is described by formula 2 Y 1 is —O—, —S—, —CO—, —SO 2 —, —C(CH 3 ) 2 —, —C(CF 3 ) 2 —, —P(O)(T 1 )-, —C(CH 3 )(T 1 )-, —P(O)(R 4 )—, diphenyl methylene, diphenyl silicon, fluorenyl, an alkylene, a bond single chemical bond, or R 1 , R 2 , and R 3 are each independently H, C 1-10 alkyl, C 6-18 aryl, C 6-18 aralkyl, SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , or —PO 3 2− M 2 + , —PO 3 2− M 2+ ; R 4 is H, C 1-10 alkyl, C 6-18 aryl, or C 6-18 aralkyl; m, n, and s are each independently an integer from 1 to 200; p is an integer from 1 to 20; i is an integer from 1 to 6; T 1 is H or a moiety having formula 3: Y 2 and Y 4 are each independently —O—, —S—, —CO—, —SO 2 —, —C(CH 3 ) 2 —, —C(CF 3 ) 2 —, —P(O)(R 4 )—, diphenyl methylene, diphenyl silicon, fluorenyl, an alkylene, or a bond; R 4 is H, C 1-10 alkyl, C 6-18 aryl, or C 6-18 aralkyl; R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , and R 13 are each independently H, C 1-10 alkyl, C 6-18 aryl, C 6-18 aralkyl, SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− M 2 + , or —PO 3 2− M 2+ ; M is a metal, ammonium, or alkylammonium; and j is an integer from 0 to 30; with the proviso that when j>1, the Y 2 between sequential aromatic rings are the same or different; the R 5 , R 6 , R 7 , R 8 , and R 9 on sequential aromatic rings are the same or different; and at least one of R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , and R 13 is —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− M 2 + , or —PO 3 2− M 2+ , wherein at least one of A, B, or C comprises a component selected from the group consisting of polymer segments having formulae 8, 9, 10, and 11, and salts thereof: