Fused heteroaromatic monomers for preparing low bandgap polymers

Abstract

The present invention involves monomeric compounds having the structure: ##STR1## Substituents W and Z are independently --CN, --NO 2 , --aryl, --aryl--V, --COX, SO 2 R, --H, or --alkyl. Substituent X is --OR, or --NR,R where R and R 1 are independently --alkyl or --H. Substituent V is --halide, --NO 2 …