Patent ID: 6635729
Filing Date: 2003-10-21
Classification: C08G,H01B,H01G,Y02E

Abstract:
A process for the preparation of water-soluble &pgr;-conjugated polymers comprising polymerizing, in aqueous solution using an oxidant, a monomeric thiophene derivative of formula (I) whereinX and Y are identical or different and are O, S, or Nâ€”R1, Z is â€”(CH2)mâ€”CR2R3â€”(CH2)nâ€”, R1 is aryl, C1-C18-alkyl, or hydrogen, R2 is hydrogen or â€”(CH2)sâ€”Oâ€”(CH2)pâ€”SO3âˆ’M+, R3 is â€”(CH2)sâ€”Oâ€”(CH2)pâ€”SO3âˆ’M+, M+ is a cation, m and n are identical or different and are an integer from 0 to 3, s is an integer from 0 to 10, and p is an integer from 1 to 18.