Quaternization of trans-dipyridylporphyrin with 1,4-butaneditrifluorom
ethane-sulfonate affords new polyionenes containing porphyrin units in
the main chain. The polymers exhibit chemical and electrochemical rev
ersible redox activities. Weitz-type two-step redox processes similar
to those of viologens account for the redox properties of the polymers
.