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Issue 15, 2019
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Influence of side chain isomerism on the rigidity of poly(3-alkylthiophenes) in solutions revealed by neutron scattering

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Abstract

Using small-angle neutron scattering, we conducted a detailed conformational study of poly(3-alkylthiophene) solutions in deuterated dichlorobenzene. The focus was placed on addressing the influence of the spatial arrangement of side chain constituents on backbone conformation. We demonstrate that by introducing a branch point in the side chain, side chain steric interactions may promote torsional motion between backbone units, resulting in greater chain flexibility. Our findings highlight the key role of topological isomerism in determining the chain rigidity and throw new light on the debate about the effective approaches for optimizing the electronic properties of conducting polymers via side chain engineering.

Graphical abstract: Influence of side chain isomerism on the rigidity of poly(3-alkylthiophenes) in solutions revealed by neutron scattering

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Publication details

The article was received on 08 Dec 2018, accepted on 24 Feb 2019 and first published on 25 Feb 2019


Article type: Paper
DOI: 10.1039/C8CP07520D
Phys. Chem. Chem. Phys., 2019,21, 7745-7749

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    Influence of side chain isomerism on the rigidity of poly(3-alkylthiophenes) in solutions revealed by neutron scattering

    W. D. Hong, C. N. Lam, Y. Wang, Y. He, L. E. Sánchez-Díaz, C. Do and W. Chen, Phys. Chem. Chem. Phys., 2019, 21, 7745
    DOI: 10.1039/C8CP07520D

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