Electrochemical properties of new n-type π-conjugated polybipyridines and polybiphenylenes with various bridging units

New electrochemically active pi-conjugated polymers were prepared. They had polybipyridine or polybiphenylene type structure with an -N=N-, -O-, or -NHCONH- bridging group between the two aromatic units, and underwent more facile electrochemical reduction (or n-type doping) than the mother pi-conjugated polymers without the bridging group. (C) 2003 Elsevier Science B.V. All rights reserved.