Effect of π-conjugation on electrochemical properties of poly(terthiophene)s 3′-substituted with fullerene C60

Authors

M Czichy, Silesian University of Technology
Pawel W. Wagner, University of WollongongFollow
Mieczyslaw Lapkowski, Silesian University of Technology, Polish Academy of Sciences
David L. Officer, University of WollongongFollow

RIS ID

107167

Publication Details

Czichy, M., Wagner, P., Lapkowski, M. & Officer, D. L. (2016). Effect of π-conjugation on electrochemical properties of poly(terthiophene)s 3′-substituted with fullerene C60. Journal of Electroanalytical Chemistry, 772 103-109.

Abstract

The series of copolymers based on terthiophene 3′-substituted with C60-pyrrolidine or styryl group, were electrochemically synthesized and characterized. The dense distribution of C60 side group caused the steric effects between them and the perturbation in the extent of π-electron delocalization of the poly(terthiophene) backbone. The ESR spectroscopy showed the presence of close-packed clusters especially in homopolymer: poly(terthiophene-C60). The oxidative electrochemical copolymerization of terthiophene units was performed to avoid this steric interactions and in results to extend the effective π-conjugation length in the polymer. The use of different ratio of the co-monomers contributed to the variable distribution of C60 unit and different effective π-conjugation of the resulting polymers. Those changes affected electrochemical and photocurrent-generating properties of these materials.