Patent ID: 6403809
Filing Date: 2002-06-11
Classification: C07D,C08G,H01L,Y10S

Abstract:
A compound or complex comprising a repeat unit of the following formula (6):-[fused thiophene]m-â€ƒâ€ƒ(6) wherein m is an integer of 2, 3, 4, or more than 4, and fused thiophene comprises a group having a formula selected from the formulae (II), (III), (IV), and (V): wherein R1, R2 and R3 are independently H, â€”(CH2)nCH3, â€”O(CH2)nCH3, â€”S(CH2)nCH3, a solubilising side chain, an alkyl group, or an aryl group, if desired R1 and/or R2 forming a saturated or unsaturated ring substituent with the carbon atom adjacent to the carbon atom to which they are attached, and R1 may be a COOH, triazole or a tetrazole group, or a derivative thereof, and n=0 or 1-40, provided that, when the compound consists of a repeat unit of formula (6) in which fused thiophene is a group of formula (II) and R1=R2=H, m is 2, 3 or 4.