Aromatic polyamines containing electron-rich alkynes in the main chain were synthesized and used as precursor donor polymers. Postfunctionalization of the aromatic polyamines was performed by the click chemistry-type addition reaction of tetracyanoethylene to the alkyne moieties, yielding the donor-acceptor alternating polymers. UV-vis spectroscopy suggested the smooth reaction progress without any side reactions. The postfunctionalized polyamines showed narrow band gaps, as revealed by their charge-transfer bands and redox activities ascribed to intramolecular donor-acceptor interactions. 

Click synthesis of low band gap semiconducting polymers

244th National Meeting (2012)

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