Patent ID: 7420071

Claim:
A compound having Formula I: wherein W 1 and W 2 are independently O, S, or NH; V 1 and V 2 are independently O or NH; L and X are independently a C 2-20 alkylene, cycloalkylene, or arylene group, optionally substituted with one or more F, Cl, Br, or CF 3 ; Y is —COOR 2 , —N(R 3 ) 3 + Z, —OSO 3 R 4 2 , —SO 3 R 4 , —OPO 3 R 4 2 , —PO 3 R 4 , or —PO 2 R 4 ; or X and Y together form R 1 ; Z is a negatively charged counter ion; R 1 at each occurrence is independently a C 10-100 alkyl or alkenyl, group, each optionally substituted with one or more F, Cl, or Br; R 2 is H, a positively charged counter ion, or an alkyl, alkenyl, aryl, aralkyl, heterocyclyl, or heterocyclalkyl group; R 3 at each occurrence is independently C 1-4 alkyl; R 4 at each occurrence is independently H or a positively charged counter ion; and n is 0, 1, 2, or 3.