Patent ID: 7468130

Claim:
A composition comprising a compound of structural Formula (II): or salts, solvates or hydrates thereof, wherein R 1 , R 2 and R 3 are independently alkyl, alkoxy, alkoxycarbonyl, alkylsulfonyloxy, amino, aryl, aryloxycarbonyl, arylsulfonyloxy, halo or hydroxyl, optionally substituted with one or more (C 1 -C 6 ) alkyl groups, provided that at least one of R 1 , R 2 and R 3 is not alkyl, aryl or hydroxyl; L 1 is alkyldiyl, heteroalkyldiyl, aryldiyl or heteroaryldiyl; and Y is —C(O)N(R 4 )(R 5 ), —N(R 4 )C(O)R 7 , —N(R 4 )S(O 2 )R 7 , —S(O) 2 N(R 4 )(R 5 ), —OC(O)R 7 , —OC(O)N(R 4 )(R 5 ), —N(R 4 )C(O)OR 7 , —N(R 4 )C(O)N(R 5 )(R 6 ) or wherein R 4 , R 5 and R 6 are independently hydrogen, (C 1 -C 6 ) alkyl optionally substituted with one or more hydroxy or cyano groups or (C 5 -C 7 ) aryl optionally substituted with one or more hydroxy or cyano groups, provided that at least one of R 4 , R 5 and R 6 is not hydrogen; and R 7 is (C 2 -C 6 ) alkyl optionally substituted with one or more hydroxy or cyano groups or (C 5 -C 7 ) aryl optionally substituted with one or more hydroxy or cyano groups; wherein said compound is covalently bonded to a substrate, said composition further comprising a compound of structural Formula (IV) covalently bonded to said substrate: wherein R 8 , R 2 , and R 10 are independently alkyl, alkoxy, alkoxycarbonyl, alkylsulfonyloxy, amino aryl, aryloxycarbonyl, aryloxy, arylsulfonyloxy, halo or hydroxyl optionally substituted with one or more independently selected (C 1 -C 6 ) alkyl groups, provided that at least one of R 1 , R 2 and R 3 is not alkyl, aryl or hydroxyl; L 2 is alkyldiyl, heteroalkyldiyl, aryldiyl or heteroaryldiyl; and W is an ionizable group and different than Y.