Patent ID: 7273918

Claim:
A thermally stable self-doped functionalized polyaniline comprising the repeat units of Formulas I, wherein: x and y are the same or different at each occurrence and are integers equal to or greater than 0, with the proviso that the sum of x and y is greater than 0; z is the same or different at each occurrence and is an integer greater than 0; n is the same or different at each occurrence and is an integer from 0 to about 4; l is the same or different at each occurrence and is an integer from 0 to 4, with the proviso that at least one occurring 1 is not zero and with the further proviso that the sum of n and 1 at the same occurring repeat unit is equal to or less than 4; R 1 and R 3 are the same or different at each occurrence and are a hydrogen or a substituent; and R 2 is the same or different at each occurrence and has the formula of: —X—R 4 wherein X is the same or different at each occurrence and is a divalent atom or moiety; R 4 is the same or different at each occurrence and is an acid-substituted functional group.