Patent ID: 6653438
Filing Date: 2003-11-25
Classification: C07C,C07F,C08G,C09B,C09K,H01L

Abstract:
A conjugated polymer which contains structural units of the formula in whichR1 and R2 are two different substituents selected from the group consisting of C2-C40-heteroaryl and C5-C40-aryl, wherein said aryl and said heteroaryl independently of one another are optionally substituted by one or more substituents R3, R3 and R4 are identical or different and are C1-C22-alkyl, C2-C20-heteroaryl, C5-C20-aryl, F, Cl, CN, SO3R5 or NR5R6, wherein said alkyl is branched, unbranched or alternatively is cycloalkyl radical, and individual, non-adjacent CH2 group(s) of the alkyl radical are optionally replaced by O, S, C&boxH;O, COO, Nâ€”R5 or a simple aryl, wherein the above mentioned said aryls are optionally substituted by one or more non-aromatic substituents R3, R5 and R6 are identical or different and are H, C1-C22-alkyl, C2-C20-heteroaryl or C5-C20-aryl, wherein said alkyl is branched or unbranched or alternatively is a cycloalkyl radical, and individual, non-adjacent CH2 group(s) of the alkyl radical is optionally replaced by O, S, C&boxH;O, COO, Nâ€”R5 or a simple aryl radical, wherein the above mentioned said aryls are optionally substituted by one or more non-aromatic substituents R3 and m and n are each identical or different and are an integer 0, 1, 2 or 3.