| abstract |
The present teachings provide novel organic semiconductor of formula I compounds and their soluble precursors, methods for preparing these compounds and precursors, as well as compositions, materials, articles, structures, and devices that incorporate such compounds wherein Q and Q1 independently are a fused ring moiety optionally substituted with 1 - 10 Ra' groups; and L, L', a-n and n' are specified in claim 1. |