| abstract |
Compounds of Formula (I): (formula (I)) where: X1 and X2 are the same or different and each is independently Cl, Br, I, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; and, Y is O, S, Se, NR1, R1C-CR2 or R1C=CR2, wherein R1 and R2 are the same or different and are each independently H or an organic group, are useful as monomers to produce oligomers or polymers that are useful in organic electronic devices. |