Approaches to Bridged Planar Polypyridine, Polypyrazine, and PolythiopheneDerivatives for Maximization of Extended pi-Conjugation

摘要

We have been directing synthetic efforts toward the construction of conjugatedmacromolecules that are fixed in a planar conformation. The planar conformations should maximize the extended pi-conjugation. Additionally, the bridging units, if sp2-hybridized, should further increase the extended pi-conjugation of the macromolecular systems. We previously described a synthetic route to planar