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Spectroscopic and Spectroelectrochemical Studies of New Poly(thiophene) – Based Conjugated Polymers Containing Oligoaniline Side Chains
Renaud Demadrille, Katarzyna Buga, Malgorzata Zagorska, Sophie Quillard, Patrice Rannou, Irena Kulszewicz-Bajer and Adam Pron

New processible conjugated polymers containing oligoaniline side chains have been prepared by post-polymerization functionalization of appropriate precursor polymers. In particular, poly(3-octylthiophene) with dianiline pendant groups (POT-DA) has been obtained via amidation reaction between N-phenyl-1,4-phenylenediamine and poly(3- octylthiophene) containing carboxylic groups. Copolymer of bithiophene and fluorene containing tetraaniline side groups (PDOBTF-TA) has been prepared from poly(dioctylbithiophene-alt-fluorenone) precursor by grafting of the oligoaniline via the carbonyl group. Electronic and vibrational spectra of the above polymers can be tuned by varying the grafting level. Electrochemical activity of both polymers involves not only the conjugated main chain but also oligoaniline side chains as proven by Raman spectroelectrochemical investigations.

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